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TROND Bluetooth 5.0 Transmitter Receiver, Bluetooth Adapter for TV, 2-in-1 Wireless Audio Transmitter for PC MP3 Gym Airplane, Bluetooth Receiver for Speakers Headphones Boat Car
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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
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Purchase options and add-ons
Brand | TROND |
Hardware Interface | Bluetooth, Bluetooth 5 |
Color | Black |
Product Dimensions | 2.17"L x 1.5"W x 0.41"H |
Data Link Protocol | Bluetooth |
Item Weight | 0.61 Ounces |
About this item
- APTX and APTX LOW LATENCY SUPPORTED - Powered by premium CSR8670 chipset, TROND BT-DUO S not only supports the latest Bluetooth V5.0, but also adds aptX and aptX Low Latency to both the TX and RX modes. With aptX, you can enjoy CD-quality sound wirelessly over Bluetooth connections with aptX-source devices like TV, phones or tablets; with aptX Low Latency, you can now watch video while listening to wireless audio in a synchronized fashion AND without any noticeable audio delay
- TX MODE BLUETOOTH TRANSMITTER - By plugging TROND Bluetooth transmitter to your non-Bluetooth audio sources (TV, iPod, MP3 or Kindle e-Book reader), you can enjoy high quality music wirelessly or listen to late night shows without disturbing your family members on your Bluetooth headphones or speaker. Charging while working, the built-in battery could support the Bluetooth adapter to work for 9-10 hours per full charge
- RX MODE BLUETOOTH RECEIVER w/ VOLUME CONTROL - TROND Bluetooth adapter can upgrade your old wired headphones (such as Bose QC25/QC15) or speakers into wireless with the support for aptX Low Latency. Its volume/track buttons allow you to play/pause music, turn volume up/down, and select track forward/backward. (NO hands-free calling due to lack of microphone; cannot be powered up automatically while you start the car ignition)
- PAIR WITH TWO and SMART CODEC INDICATOR - In TX mode, TROND Bluetooth transmitter can pair to two Bluetooth Headphones, and streams audio to both simultaneously. However, in this application, the codec will be downgraded to from aptX Low Latency to SBC. It can also tell you which codec is in place by displaying different LED status. The blue LED blinks once every 10 seconds for SBC, blinks twice for aptX, and blinks three times for aptX Low Latency
- COMPACT DESIGN, CARRY EVERYWHERE - Bluetooth transmitter for tv, weights only 0.61oz, some round shape body, has good compatibility with most Bluetooth headphones. Easy to be store at home home and carry in road trip or flight to enjoy music. Note: The bluetooth adapter actually only RX-mode can be used in the car
- COMPATIBILITY NOTE - Check if there is any AUDIO OUT socket in your TV's back panel. The BT-DUO S will not work when it is inserted into any AUDIO IN/COMPONENT IN sockets. If your TV only has a digital optical port for audio out, please order another model: TROND BT-DUO X.
- What You Get - TROND BT-DUO S 3.5mm Bluetooth V5.0 Transceiver with aptX Low Latency, 3.5mm male to 3.5mm male aluminum audio adapter, 3.5mm male to 3.5mm male audio cable (50cm extra-long), 3.5mm female to RCA male audio cable, USB to micro USB charging cable, user manual in English
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Product guides and documents
What's in the box
Product Description
Product Specifications:
- Bluetooth Compliance: Bluetooth V5.0, CSR 8670 chipset, A2DP
- Working Range: up to 33ft / 10m
- Supports: Dual Stream (TX mode); Multi-Point (RX mode)
- Codec: APT-X LL(TX/RX), APT-X(TX/RX), SBC(TX/RX)
- Working Time: about 10 hours
- Charging Time: 2 hours / 5V; working while charging
- Dimension: L 55 x W 38 x H 10.5 mm / 2.17 x 1.50 x 0.41 in
- Net Weight: 17.2 g / 0.61 oz
Mode I: Bluetooth Transmitter (TX)
TX Application: switch to "TX" mode, connect it to the audio OUT port of your non-Bluetooth audio sources, such as TV, iPod, CD-player, or Amazon Kindle, and then pair it with your wireless headphones. Start enjoying music, watching videos,s or playing games without disturbing someone next to you.
No Lip-Sync Delay: with aptX Low Latency, it can effectively minimize the audio delay, which allows you to watch late-night TV shows in a synchronized way. Please order "TROND TD-BH01 Over-Ear Bluetooth V4.2 Headphones" for the best low latency performance.
Dual Stream: TROND BT-DUO S can pair up to two Bluetooth audio devices simultaneously, and streams audio to both of them. However, in this case, the codec would be downgraded from aptX LL to SBC.
Mode II: Bluetooth Receiver (RX)
RX Application: switch to "RX" mode, connect it to the audio IN port of your wired audio device, such as wired earbuds, speaker, or car stereo via 3.5mm cable, and pair it with Bluetooth-enabled audio sources such as your smartphone, tablet or laptop. This way, you could enjoy high-quality music wirelessly without spending more to order Bluetooth headphones or speakers.
AptX Low Latency: unlike most other 2-in-1 transceivers which don't support aptX LL or aptX in the receiver mode, TROND BT-DUO S is ideal for turning your wired headphones, speakers, or car stereo into Bluetooth-enabled headphones or speakers with the feature of aptX Low Latency.
Multi-Point: you can pair two smartphones (or tablets) to this receiver simultaneously. However, it can only receive the audio from one phone at a time. You need to pause the music on one phone first in order to play music from the other phone.
Pdf Manual: check the pdf manual in the ’‘PRODUCT GUIDES AND DOCUMENT’‘ section if you would like to download it.
More Product Features to Explore
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Full Music Control (RX)By connecting your wired headphones or speaker to TROND BT-DUO S in the receiver mode, you could remotely play/pause music, adjust volume up/down, and change track forward/backward by using the volume control buttons.
Note: the microphone and the volume/track buttons on your wired headphones or speaker will become inactive once they are connected to the receiver. |
Upgraded with Smart Codec IndicatorBe smart, and don't let false advertising fool you. TROND BT-DUO S has been upgraded with a smart codec indicator and can tell you which codec is in place, by displaying different LED statuses after the music starts playing.
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Super Long Working TimeDC Mode: Connect to a quality USB charger, and stream the audio as long as you can. You can charge it while it's working; 200mAh Rechargeable Battery: TROND BT-DUO S can provide approx. 8-hour battery life, and can be fully recharged within approx. 2 hours. It needs to be recharged ASAP when the LED keeps flashing red. The LED turns steady red while being recharged, and turns off once fully charged. |
Tips Before Using:
- Switch to the right working mode (TX or RX) before powering on. As a transmitter (TX), it should pair with receiving devices, such as Bluetooth headphones or speakers. As a receiver (RX), it should pair to transmitting audio sources, such as your phone or tablet. You can't pair two transmitting devices or two receiving devices together;
- If you want to use it as a transmitter and connect to your TV, please refer to the user manual of your TV and find the right AUDIO OUT port (3.5mm or white/red RCA), instead of any VIDEO or AUDIO IN ports. If your TV only offers the digital optical audio out port, please order another model instead: TROND BT-DUO X;
- Your wireless headphones or speakers also need to support the codec of aptX Low Latency in order to reduce the audio latency to 40ms. Otherwise, the codec will be downgraded to aptX or even SBC;
- If TROND BT-DUO S gets stuck and all the buttons stop working properly, please press & hold the MFB, and plug in the external USB charger to shut down BT-DUO S. Please note that this operation won't delete the previous pairing record;
- If you'd like to delete all the pairing records, please refer to the section of "Frequent Asked Questions" at the end of the user manual for how to reset TROND BT-DUO S.
Bluetooth Transmitter Digital Optical Adapter | Bluetooth V5.0 Transmitter & Adapter | Bluetooth V5.0 Transmitter & Receiver | |
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Customer Reviews |
4.2 out of 5 stars
696
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4.2 out of 5 stars
7,308
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4.2 out of 5 stars
1,177
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Codec Supported | SBC, aptX, aptX Low Latency (for both TX & RX) | SBC, aptX, aptX Low Latency (for both TX & RX) | SBC, aptX, aptX Low Latency (for both TX & RX) |
Audio Connection | 3.5mm, RCA, digital optical in (TX), digital optical out (RX) | SBC, aptX, aptX Low Latency (for both TX & RX) | 3.5mm, RCA |
Working Range | 10m / 33ft | 10m / 33ft | 10m / 33ft |
Power/Pairing Button | one MFB button | one MFB button | one MFB button |
Codec Indicator | ✓ | × | ✓ |
Pair with Two (TX) | ✓ | ✓ | ✓ |
AptX Low Latency in Dual Link Mode | × | × | × |
Volume + / - | × | × | Yes, in receiver mode only |
Hands-Free Calling | × | × | × |
Battery Capacity | 350mAh | 160mAh | 200mAh |
Looking for specific info?
Videos
Videos for this product
2:33
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Tutorial video for pairing
TROND Official
Videos for this product
6:17
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How To use and Unboxing!!
Bennett's Reviews and How To's
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6:19
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Customer Review: Create a Budget Wireless Mic!
Eric Keezer
Videos for this product
0:56
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Short Tutorial for BT-DUO in TX/RX
TROND Official
Videos for this product
0:33
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Use Scenarios for BT-DUO/BT-DUO S
TROND Official
Product information
Product Dimensions | 2.17 x 0.41 x 1.5 inches |
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Item Weight | 0.61 ounces |
Manufacturer | TROND |
ASIN | B01K8ANDCI |
Item model number | BT-DUO S |
Batteries | 1 Lithium Polymer batteries required. |
Customer Reviews |
4.2 out of 5 stars |
Best Sellers Rank | #64,258 in Electronics (See Top 100 in Electronics) #100 in Audio Component Receivers |
Is Discontinued By Manufacturer | No |
Date First Available | September 7, 2016 |
Warranty & Support
Feedback
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, sound quality, latency and ease of installation of the network interface controller adapter. For example, they mention it works well with their cell phone, it sends a clear signal to their headphones and it charges incredibly fast. That said, some disagree on bluetooth connectivity and battery life.
AI-generated from the text of customer reviews
Customers like the performance of the network interface controller adapter. For example, they say it works well enough for them, it works seamlessly and flawlessly since install, and it works fine with their cell phone and other devices. Some mention that it works very well for transmitting sound from an audio recorder to a DSLR. Overall, most are satisfied with the performance.
"...I am very satisfied with the BT performance from iPhone 7+ to Trond Rx to HD650, and iPod Classic to Trond Rx/Tx to Trond Rx to HD650...." Read more
"...In the case of this little device, it worked fine with the following headsets:..." Read more
"...It works,the sound is fine, and I was pleasantly surprised to find that with the standard aptX of my smartphone, the TROND has almost undetectable..." Read more
"...Bluetooth audio experience currently available, and I am very happy with its performance...." Read more
Customers like the sound quality of the network interface controller adapter. For example, they mention it makes their songs louder, has no discernable lag with movie lip synch, and sends a clear signal to their headphones. Some say that the volume control and current audio CODEC indicator are helpful. Overall, most are satisfied with the performance of this adapter, which receives and transmits at relatively low latency.
"...It works,the sound is fine, and I was pleasantly surprised to find that with the standard aptX of my smartphone, the TROND has almost undetectable..." Read more
"...a while as a higher quality version of Bluetooth audio, with better sound quality and less delay, but relatively few devices support it and it still..." Read more
"...The audio quality is good and it works well **WHEN** it works. But I have been disappointed in this product and cannot recommend to others...." Read more
"...in ear monitor -- Shure PTH500/530, there is background noise when played at low levels; the Shure can play really loud at a lower volume setting..." Read more
Customers like the latency of the network interface controller adapter. For example, they say it performs perfectly with no perceived delay, has no discernable lag with movie lip synch, and charges incredibly fast. They are also impresseded with the responsiveness, saying it connects in seconds. Overall, customers are happy with the performance and reliability of the adapter, and recommend it to others.
"...No lag from Samsung UHDTV Series 6 and Series 7 using the TVs BT. No audio-video lag between TV and Trond Rx, iPad and Trond Rx playing movies on..." Read more
"...In any case, this transmitter is a true low latency transmitter/receiver that works with most of the headsets I bought...." Read more
"...that with the standard aptX of my smartphone, the TROND has almost undetectable latency...." Read more
"...market with AptX LL built in, and the sound is excellent, with negligible delay...." Read more
Customers find the network interface controller adapter easy to set up and use. They say it's simple, high-tech, and works with zero delay on the audio. Customers also mention that the product is small and convenient, and that it pairs flawlessly the first time they try it.
"...2. BT pairing is easy, quick and simple.3. No lag between audio and video from Samsung UHDTV BT to either Trond unit.4...." Read more
"...- I cannot say enough positive things about the quality and simplicity of use...." Read more
"...Trond is very easy to work with. Perhaps a V5.x codec On the transmitter would mate better with the primary earbuds...." Read more
"...Blue = connected. Flashing Red/Blue: in pairing mode. Easy peasy. Instructions are emailed to you with your welcome email from TROND...." Read more
Customers are satisfied with the size of the network interface controller adapter. They mention that it is small enough to dangle from a pair of headphones or plug into a car aux port, and is easy to store. Some say that it fits inside the palm of their hand and is unobtrusive for home use.
"...The construction seems nice, small and durable. It is light however...." Read more
"...I opened the box and took the transmitter out. It's small (roughly 1 1/2" x 2" x 1/4")...." Read more
"...Size, ease of use.The Trond is very small, about the size of one of those chocolate wafers that a hotel leaves on your bed...." Read more
"...Product design-wise, it is small and inconspicuous...." Read more
Customers are satisfied with the quality of the network interface controller adapter. They mention that it is well built, sturdy, and has a stylish design. Some say that it works great and is not defective. Overall, customers are happy with their purchase and recommend it to others.
"...with aptX Low Latency Audio- Headset with Mic & Bluetooth - Sturdy Foldable - Universal Compatibility for iPhone Tablet PC]][..." Read more
".../ receive gadgets have been paired all this time, fully charged and never failed. Both are always stationary...." Read more
"This is a great product, very easy to set up, well made too. The customer service is spectacular...." Read more
"...The Trond comes in nice packaging that conveys quality, and the build quality seems good. The instructions are both clear and concise...." Read more
Customers are mixed about the bluetooth connectivity of the adapter. Some mention that it paired flawlessly the first time they tried it with their phone or speaker, while others say that it doesn't automatically reconnect with their paired headset and half the time wouldn't connect properly.
"...After that, pairing was quick as long as the two were in near contact with each other though other BT devices were on...." Read more
"...move around, sometimes there is a bit of a temporary sound / bluetooth connection issue such that I have to watch what the receiving side of the..." Read more
"...to a continuous source of power via the microsd port, it pairs almost instantly when I turn my headphones on..." Read more
"Very professionally packaged and multiple connecting options with the purchase. Communications with the seller are excellent...." Read more
Customers are mixed about the battery life of the network interface controller adapter. Some mention that the stated life is long enough, while others say that it trails after a few months and must be recharged more often than they would like.
"...The two send / receive gadgets have been paired all this time, fully charged and never failed. Both are always stationary...." Read more
"...The one disappointment, however, is that I have to manually turn on the TROND every time I want to use it, even though it's plugged into my TV's USB..." Read more
"...Recharging it via micro USB is simple as pie. The battery life is nothing short of fantastic -- I can get 10+ hours of use out of it before I..." Read more
"...The battery is small and lasts for only a couple uses (of about an hour each time), so we just leave it plugged in all the time...." Read more
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Tx/Rx: TROND Bluetooth V4.1 Transmitter Receiver / Wireless 3.5mm Audio Adapter with aptX Low Latency & aptX for Both TX & RX, Dual Stream and Volume Controller
Rx: TROND 3.5mm Bluetooth V4.2 Audio Receiver Adapter with AptX Low Latency & Volume Control, for Home Stereo, Wired Headphones & Speakers
Both are 5 stars IMO. Here’s what I was looking for and what I found:
Main objective: Use a BT receiver to allow me to use wired high quality headphones (Sennheiser HD650, HD598, HD555 mod to 595) with BT enabled devices (TV, computers, iPhone 7+, iPods and iPads) and secondary objective of using wired headphones with non-BT enabled legacy devices (iPod classic, older TVs)
Why? Good quality BT enabled headphones are expensive and have a limited frequency range (Bose QC35 $349, and Sennheiser HD-1 Wireless $499, 28 ohm impedance, 16-22000 Hz) compared to higher quality headsets (Sennheiser HD650 300 ohm impedance, 10-41000Hz; HD598 50 ohm, 12-38,500 Hz, HD280 64 ohm, 8-25000 Hz). Even though BT has improved up to BT 4.2 and codecs for sound transmission have improved to decrease latency and transmit a broader range of frequencies, it is still cheaper to convert wired headset to BT capability at the inconvenience of managing a dangling cable. I don’t expect the BT transmission to have the same quality as a headphone wired directly to a receiver or iPhone/iPod/iPad
Why did I purchase both?
a. Reviews of many bluetooth (BT) receivers (Rx) used to drive headphones reported lag between video and audio. I wanted the receiver, but if there was going to be lag, then I’d pair the Rx/Tx with the Rx to see if that helped. I looked for low latency drivers.
b. For non-BT devices (old iPod classic, non BT TV, I needed a BT Tx, so a combo Rx/Tx made sense.
What features were I looking for?
a. Volume control on the Rx. Why? because the wired headphones don’t have volume control unless I put a volume control between them and the Rx. Samsung Series 6 600D and Series 7 700D UHDTVs with BT don’t provide volume control using the TV remote; therefore the receiving end of the BT Rx has to control the volume.
b. Most up to date BT 4.1 or 4.2 so that it maintains backwards compatibility with other BT units (not all BT are the same — i.e. my iPhone 7+ can pair to a Jaybird Freedom, but my iWatch series 2 won’t pair with the Jaybird Freedom).
My intended uses:
1. Pair Bluetooth TV to Rx connected to headphone, if there is latency, then connect Rx/Tx to TV RCA outs and pair Rx/Tx to Rx connected to headphone
2. Pair iPads/iPhone/iPod blue tooth to Rx/Tx in Rx mode or Rx connected to headphone
3. Pair Rx/Tx to Rx connected to headphone
DESIGN.
Both have the same small form factor, plastic box except the Rx has an on off sliding switch rather than just a single button that has to be held 3 seconds to turn it on. Rx/Tx no sliding on off switch, just a button that has to be held down 3 seconds.
EASE OF CONNECTION:
Charged both fully. Tx/Rx set to Tx and turned on, Rx turned on 1st time and they paired within 5-10 seconds. Tx/Rx goes to solid blue; Rx goes to LED off blinking blue every 10 seconds instead of solid blue to indicate connection. No I can connect any nonBT device (TV, older iPods, iPod Classic) via male to male 1/8” plug to the Tx/Rx set to Tx mode and headphone connected to Rx and I have a functioning BT system. I just wrap the headphone cords up with velcro and put it on one side of the headband … looks geeky but I’m using it for function, not looks.
To set either unit to pair, just double tap the “power button” and they immediately blink red blue red blue until paired. Once paired, Tx/Rx light goes to solid blue, Rx blinks blue every 10 seconds. Even if a connection is active, the double tap “power button” breaks the connection and sets the units to pair mode. Pairing is quick.
Pairing to Samsung 600D, 700D UHDTV is easy. Go to Menu Settings > Audio > Select Speaker > Bluetooth. The Trond unit will show up no screen, select pair and it’s done in 5 seconds. Volume control is on the Trond unit; Samsung remote cannot control volume from TV. NO LATENCY on both TVs to Rx/Tx or Rx. Very nice. Don’t need to implement the Rx/Tx —> Rx method. This gives me a BT Rx for each TV now.
Caveat, iWatch series 2 cannot pair to either Trond Rx/Tx set to Rx mode or Trond Rx. But iWatch series 2 cannot pair to Jaybird Freedom BT earphone. iPhone 7+ pairs to Tronds and Jaybird Freedom BT and work without problems. This seems to be more of a problem with the iWatch than the Trond units.
DROP OFFS and DISTANCE:
Connection good to HDTV BT 30 feet away unobstructed. No drops offs of signal or loss of connection with iPhone in pants pocket and received on opposite side of my head indoors. Haven’t tested outdoors where BT can’t bounce off walls. Intermittent breakup when BT Rx separated from BT Tx by a floor (i.e. receiver on 1st floor, Tx in basement, but of course it gets better when I’m standing 1 floor immediately above the Tx in the basement).
If paired to iPhone 7+ and I turn on the car to which the 7+ is paired, the Trond connection shuts off and the car and 7+ become paired to give priority to car-phone handsfree connection. Trond doesn’t have a speaker and can’t be used for answering calls (which is not what I got this for).
SOUND QUALITY:
No lag from Samsung UHDTV Series 6 and Series 7 using the TVs BT. No audio-video lag between TV and Trond Rx, iPad and Trond Rx playing movies on Amazon Prime and Youtube.
Sound quality depends upon type of headphone connected to Rx, but the Rx and Rx/Tx can both drive a 300 ohm impedance Sennheiser HD650 without problem. (Avantree Quick Clip reportedly has a hiss and can’t drive anything more than 32 ohm from what I’ve seen on reviews on Amazon).
The sound quality (frequency spread) is not as wide as wiring the HD650 directly to my iPod classic, but it’s almost as good (i.e. like listening to an MP3 at 320 kbps instead of a lossless MP4/M4A at up to 1444 kbps sampling). I use MP4 lossless music files as I can hear the difference in quality between 1444 kbps sampling MP4/WAV and MP3 320 kbps max. I am very satisfied with the BT performance from iPhone 7+ to Trond Rx to HD650, and iPod Classic to Trond Rx/Tx to Trond Rx to HD650. Even though reviews say an HD650 is best used with an external amp, I have been more than satisfied with the performance with an un-ampped HD650 driven by an iPod classic or iPhone 7+ lightning to 1/8” plug given the type of recordings I use (which are much better than the 128 kbps stuff found off of iTunes music store … the stuff that many are satisfied using less refined headsets and earbuds).
Works just fine with the other HD598, HD 555 mod to HD 595, so it should work just fine with anything lesser. Even the slightly truncated sound of the Tx/Rx to HD650 is still better than any of the other headsets. Wired is always better than BT, but BT is getting close. Other specs:
HD280 8-25000 Hz, 64 ohm impedance
HD555 12-38599 Hz
HD598 12-38500 Hz, 50 ohm
HD650 10-39500 Hz, 300 ohm
HD1 16-22000 Hz, 28 ohm; this is Sennheiser’s $499 BT headset
Bose QC35 $349, QC2, QC3 — I can’t find specs on these, but the Trond’s drive my QC3 just fine. Haven’t tested QC2 and of course the QC35 doesn’t need this. In general, Bose headphones tend to muddy the mids and are thus more bass heavy than balanced headphones.
Sennheiser HD700 8-44000 Hz, 150 ohm, $419
Sennheiser HD800 19-44900 Hz, 300 ohm, $990
I’d rather spend my money on an HD700 than on the $499 HD1, so the Trond BT are a workable solution for me. If they can drive the HD650, I’d anticipate it should do just as well with an HD700.
Things I haven’t tested:
I haven’t tried the Rx/Tx bind to two Rx to drive two headphones, but this is what would be needed to drive 2 headsets from one TV. I haven’t tested how week the signal would get from an Rx connected to a 1/8” splitter to drive two headsets.
FINAL THOUGHTS:
1. Trond Rx/Tx and Rx are both 5 star.
2. BT pairing is easy, quick and simple.
3. No lag between audio and video from Samsung UHDTV BT to either Trond unit.
4. Trond Rx able to drive 300 ohm Senheisser HD650 without hiss
5. Less cost than the Avantree Quick Clipper Pro and Priva III (which I considered prior to purchasing these). Reportedly the Clipper can’t drive anything >32ohm per specs.
If you don’t need a BT Tx, then I’d just buy the $20 Trond BT Rx. If you want flexibility, then get the Trond BT Rx/Tx with volume control which are $37 as of 3/20/2017. Even though iPhone and iPod Classic can control the volume transmitted to the Rx, the Samsung TVs don’t; therefore, I wouldn't get the BT Rx/Tx without volume control or volume at the headset will be loud unless you put a volume control between the Rx and the headset plug.
3/24/2017 Update:
I liked these so much, I bought another pair of Tx/Rx and Rx. Amazon had a lightning deal on the Tx/Rx for around $25. Great deal.
To get them to initially pair, make sure no other BT devices are on. I couldn't get them to pair initially when my BT Samsung UHDTV was on because the TV seems to automatically pair to devices like this. Once I turned off the TV, I could get the Rx/Tx to pair to the Rx. After that, pairing was quick as long as the two were in near contact with each other though other BT devices were on.
Update: 4/10/2017
When using these with a sensitive, low impedence in ear monitor -- Shure PTH500/530, there is background noise when played at low levels; the Shure can play really loud at a lower volume setting than >50ohm impedance headphones (i.e. No low level noise using Sennheiser HD280 (64 ohm), HD 555/598 (50 ohm), HD 700 (150 ohm), and HD 650 (300 ohm).
Paired to Samsung Series 6/7 UHDTVs as well has headphone output on a Yamaha RX-3060 receiver running a connected BluRay, I find no lag between audio and visual, even after putting the movie through various digital signal processes on the Yamaha.
First let me state that the endeavor is more complicated than it seems at fisrt hand. Although bluetooth tries to make it as easy and transparent for the user, not all bluetooth devices are equal. What you want to pay attention to is what codecs are supported by your devices. There are fast codecs and slow codecs, and there are high fidelity codecs and low fidelity codecs. Without going too much into it, the fastest high fidelity codec available today is called AptX-LL. It is an improvement over the older AptX codec, of the same company.
So what you want is a transmitter and a headset that both support AptX-LL. AptX alone is not fast enough, mind you, so if anything is AptX only, your bluetooth connection will be noticeably slower.
Then, there is the issue that sometimes a certain brand of transmitter and a certain brand of headphones will not connect fast even when both support AptX-LL. This is annoying, but it happens. So you want to try a few headsets with a few transmitters and see which ones work together.
And that's what I did. I bought a bunch of transmitters and a bunch of headphones and paired them all to see what would work.
In the case of this little device, it worked fine with the following headsets:
Premium MS301 Mixcder Wireless & Wired V4.2 Bass Noise Isolation Headphones with aptX Low Latency Audio- Headset with Mic & Bluetooth - Sturdy Foldable - Universal Compatibility for iPhone Tablet PC
Avantree Wireless Bluetooth Over Ear Headphones with Mic, LOW LATENCY Fast Audio aptX Headset for Gaming TV PC, 40h Battery Sound - Audition Pro [2 Years Warranty ]
Premium MS301 Mixcder Wireless & Wired V4.2 Bass Noise Isolation Headphones with aptX Low Latency Audio- Headset with Mic & Bluetooth - Sturdy Foldable - Universal Compatibility for iPhone Tablet PC
And an older version of
Plantronics BackBeat Fit Wireless Headphones - Retail Packaging - Green
The plantronics FIT headsets are not consistent. If the box says is "sweatproof", the headset will be fast. But if the box says it's "waterproof", it's a newer, improved version of the headset that does not work as fast, for some reason. The newer model phones also failed with other transmitters. Plantronics improved the case and weatherproofing, but made the electronics slower in the process. But that's for another review. It is important to note however that Platronics does not claim to support LL, so no fault on them.
In any case, this transmitter is a true low latency transmitter/receiver that works with most of the headsets I bought. The one headset this transmitter did not work with did not state to support low latency, so that was to be expected.
You will notice that my list does not include fancier headsets from beats, bose, etc. That is because the higher end manufacturers are being slow to adopt Aptx-LL, for some reason. I have not seen a higher end headset that supports it. Also I was not going to spend $200+ on a headset for this test, to be honest ...
Now, if you have a sweetheart headset, do not worry. Buy two of these little guys and set one on your TV as transmitter and the second one on your phones as receiver. They will pair so fast you will think there is still a cable connecting your equipment. Ok maybe not so much but really, the delay will be negligible. Much better than AptX alone. Three times better, not exaggerating.
Other than the latency, which was my pet peeve, other aspects of the device make it desirable.
The construction seems nice, small and durable. It is light however. And it can run on transmitter mode while connected to a power supply, which is another nice thing. Three buttons (+), (-) and (POWER/PAIR) along with a TX/RX selector make the operation really simple.
All in all, this is a low risk purchase, well worth the money if you are trying to improve your video and audio sync. Just be aware of the nuances of bluetooth protocols and nuances, and you will be happy.
Non-relevant technical detail: For those of you that want to know, sometimes manufacturers says which chipset they use in their products. A popular chipset that supports AptX-LL is called CSR 8670. If you see products with that chipset, it's a good clue they will support low latency. When I say the chipset mentioned in this page I know these were fast.
Another non-relevant technical detail: Latency is measured in thousandths of seconds, or milliseconds. In my experience, anything rated 100mS or more will have a very noticeable delay, and anything rated 30mS or less will give you audio almost right on top of your video. The less the better of course, but at the 30mS mark you will have to pay close attention to notice delay. So you can watch out for that clue, if mentioned, when deciding what to buy.
Good luck!
UPDATE: These guys are serious about customer service! Although I didn't approach them with the problem I described above, they responded to my review, and they are sending another device, the BT-DUO, which meets my needs. I raised the review by one star, but I'm not going up to five stars because future buyers should know that that the BT-DUO S will turn off in the scenario I described. But the customer service is A+!
Top reviews from other countries
The battery life appears good so far and although there isn't an indicator to let you know the battery status I have done two consecutive metal detecting sessions each of which was between 3 and 4 hours without charging between trips and there was still power in the device. Because I don't want to risk running out of battery when out metal detecting I will err on the side of caution and charge the device before I've used it for the claimed 9 hour battery life- although from my experience so far I assume that the battery life claimed in the instructions of approx 9 hours is most likely correct but I haven't tested this as not used the device until power has been completely depleted.
As for longevity/ durability of the device- I can't say at the moment as I have only used it in total 3 times so far and only charged it twice so far. I plan on using this device a lot more so may provide an update with how it continues to operate. If this device continues to work as it has so far then that would be great because at the moment I am very happy with how it works and can thoroughly recommend it!.
Den Dauertest muss das Gerät noch beweisen, aber für den Moment nicht enttäuschend.Kann ich erstmal weiter empfehlen.
Proprio per questo motivo (rendere Bluetooth il mio vecchio TV e trasmettere l'audio dal mio smartphone al mio Hi-Fi) ho deciso di recensire l'adattatore Bluetooth TROND BT-DUO S, evoluzione del modello precedente, che funge sia da ricevitore che da trasmettitore
CONFEZIONE e DESIGN
L'adattatore TROND BT-DUO S si presenta con un packaging semplice, molto ben protetto e completo, contenente:
- l'adattatore TROND BT-DUO S
- Un cavo con ad entrambe le estremità un jack da 3,5mm maschio
- Un cavo USB-MicroUSB per la ricarica
- Un adattatore RCA-Jack da 2,5mm femmina
- Le istruzioni in inglese e la garanzia
L'adattatore è in una plastica leggermente gommata che ottimizza il grip e con una banda in alluminio con il logo Trond che la rende molto piacevole da vedere.
Sul lato destro troviamo il tasto di accensione/spegnimento, e i tasti per il volume/avanzamento tracce (in base alla lunghezza della pressione sul tasto). La possibilità di regolare il volume e spostarsi tra le tracce è una cosa che ho apprezzato moltissimo.
Sul lato sinistro troviamo solo lo switch per usare l'adattatore in modalità ricevitore/trasmettitore
Sul lato basso invece troviamo l'ingresso Jack da 3,5mm e l'ingresso MicroUSB per la ricarica.
L'adattatore ha una batteria integrata che permette una decina di ore di autonomia.
UTILIZZO - Modalità Ricevitore
L'utilizzo come ricevitore (ad esempio: trasmettere l'audio dallo smartphone all'impianto hi-fi di casa che non ha il bluetooth) è davvero semplicissimo!
Occorrerà collegare l'adattatore al dispositivo che riceverà il segnale (ad esempio all'amplificatore dell'hi-fi) tramite il cavo jack o RCA, accendere l'adattatore, questo entrerà in modalità di pairing e poi accoppiare il dispositivo tramite il device che vogliamo usare per trasmettere (ad esempio lo smartphone).
A quel punto potremo godere dell'audio in qualità CD, grazie al supporto del codec APTX-Low Latency (a patto che anche lo smartphone supporti tale codec).
UTILIZZO - Modalità Trasmettitore
In maniera simile a quanto fatto nella modalità ricevitore, occorrerà effettuare l'accoppiamento. Per procedere collegare l'adattatore al dispositivo da rendere wireless (ad esempio il mio vecchio TV), spostare il selettore su TX, poi prendere il device da accoppiare (nel mio caso le cuffie Bluetooth), accenderlo e metterlo in modalità pairing.
A questo punto accendere l'adattatore TROND e tenere premuto il pulsante di accensione per 3 secondi. Quando i due dispositivi saranno accoppiati la luce led blu dell'adattatore smetterà di lampeggiare.
Anche in questa occasione non ho avuto nessun problema con i miei dispositivi e tutto si è configurato in pochi secondi.
IMPORTANTE: Il dispositivo funziona anche mentre in ricarica, ma occorre collegare il dispositivo alla fonte di carica prima di accenderlo.
QUALITA' DEL SUONO
Devo dire che la qualità è davvero ottima, ho testato l'adattatore in modalità ricevitore con il mio mini hi-fi Kenwood e con il mio impianto con amplificatore a valvole, tramite il mio Xperia Z3 (che supporta l'APT-X) e la differenza rispetto al CD è semplicemente sul volume (dipende dal telefono) ma il suono ha una ottima dinamica e spazialità, cosa che non avevo mai trovato con altri adattatori Bluetooth. Ovviamente non è un dispositivo per audiofili, ma soddisferà il 90% di chi cerca musica di qualità tramite Bluetooth. Rispetto al mio Tp-Link Bluetooth 4.0 senza APT-X, l'audio è davvero di qualità superiore.
Ottima la resa anche in modalità trasmettitore con il mio TV Samsung.
Inoltre il Codec Apt-x presente è l'evoluzione più recente ossia quella a Bassa Latenza, che permette di risolvere uno dei classici problemi del bluetooth: quello del ritardo audio.
Con questo adattatore infatti non si avranno problemi di fuori sincrono tra video e audio.
Ovviamente essendo la latenza molto bassa (40ms) ma non nulla, questo device non può essere utilizzato per scopi professionali (ad esempio da musicisti).
CONCLUSIONI
Al prezzo al quale è proposto, il TROND BT-DUO S è davvero un ottimo acquisto. Ha lo stesso prezzo di quelli della concorrenza ma offre di più, ovvero la cosa più importante: il miglior codec Bluetooth.
PRO
- APT-X Low Latency
- Tasti volume e gestione tracce
- Facilità di utilizzo
- Batteria
CONTRO
- nessuno
Reviewed in Italy on November 17, 2016
Proprio per questo motivo (rendere Bluetooth il mio vecchio TV e trasmettere l'audio dal mio smartphone al mio Hi-Fi) ho deciso di recensire l'adattatore Bluetooth TROND BT-DUO S, evoluzione del modello precedente, che funge sia da ricevitore che da trasmettitore
CONFEZIONE e DESIGN
L'adattatore TROND BT-DUO S si presenta con un packaging semplice, molto ben protetto e completo, contenente:
- l'adattatore TROND BT-DUO S
- Un cavo con ad entrambe le estremità un jack da 3,5mm maschio
- Un cavo USB-MicroUSB per la ricarica
- Un adattatore RCA-Jack da 2,5mm femmina
- Le istruzioni in inglese e la garanzia
L'adattatore è in una plastica leggermente gommata che ottimizza il grip e con una banda in alluminio con il logo Trond che la rende molto piacevole da vedere.
Sul lato destro troviamo il tasto di accensione/spegnimento, e i tasti per il volume/avanzamento tracce (in base alla lunghezza della pressione sul tasto). La possibilità di regolare il volume e spostarsi tra le tracce è una cosa che ho apprezzato moltissimo.
Sul lato sinistro troviamo solo lo switch per usare l'adattatore in modalità ricevitore/trasmettitore
Sul lato basso invece troviamo l'ingresso Jack da 3,5mm e l'ingresso MicroUSB per la ricarica.
L'adattatore ha una batteria integrata che permette una decina di ore di autonomia.
UTILIZZO - Modalità Ricevitore
L'utilizzo come ricevitore (ad esempio: trasmettere l'audio dallo smartphone all'impianto hi-fi di casa che non ha il bluetooth) è davvero semplicissimo!
Occorrerà collegare l'adattatore al dispositivo che riceverà il segnale (ad esempio all'amplificatore dell'hi-fi) tramite il cavo jack o RCA, accendere l'adattatore, questo entrerà in modalità di pairing e poi accoppiare il dispositivo tramite il device che vogliamo usare per trasmettere (ad esempio lo smartphone).
A quel punto potremo godere dell'audio in qualità CD, grazie al supporto del codec APTX-Low Latency (a patto che anche lo smartphone supporti tale codec).
UTILIZZO - Modalità Trasmettitore
In maniera simile a quanto fatto nella modalità ricevitore, occorrerà effettuare l'accoppiamento. Per procedere collegare l'adattatore al dispositivo da rendere wireless (ad esempio il mio vecchio TV), spostare il selettore su TX, poi prendere il device da accoppiare (nel mio caso le cuffie Bluetooth), accenderlo e metterlo in modalità pairing.
A questo punto accendere l'adattatore TROND e tenere premuto il pulsante di accensione per 3 secondi. Quando i due dispositivi saranno accoppiati la luce led blu dell'adattatore smetterà di lampeggiare.
Anche in questa occasione non ho avuto nessun problema con i miei dispositivi e tutto si è configurato in pochi secondi.
IMPORTANTE: Il dispositivo funziona anche mentre in ricarica, ma occorre collegare il dispositivo alla fonte di carica prima di accenderlo.
QUALITA' DEL SUONO
Devo dire che la qualità è davvero ottima, ho testato l'adattatore in modalità ricevitore con il mio mini hi-fi Kenwood e con il mio impianto con amplificatore a valvole, tramite il mio Xperia Z3 (che supporta l'APT-X) e la differenza rispetto al CD è semplicemente sul volume (dipende dal telefono) ma il suono ha una ottima dinamica e spazialità, cosa che non avevo mai trovato con altri adattatori Bluetooth. Ovviamente non è un dispositivo per audiofili, ma soddisferà il 90% di chi cerca musica di qualità tramite Bluetooth. Rispetto al mio Tp-Link Bluetooth 4.0 senza APT-X, l'audio è davvero di qualità superiore.
Ottima la resa anche in modalità trasmettitore con il mio TV Samsung.
Inoltre il Codec Apt-x presente è l'evoluzione più recente ossia quella a Bassa Latenza, che permette di risolvere uno dei classici problemi del bluetooth: quello del ritardo audio.
Con questo adattatore infatti non si avranno problemi di fuori sincrono tra video e audio.
Ovviamente essendo la latenza molto bassa (40ms) ma non nulla, questo device non può essere utilizzato per scopi professionali (ad esempio da musicisti).
CONCLUSIONI
Al prezzo al quale è proposto, il TROND BT-DUO S è davvero un ottimo acquisto. Ha lo stesso prezzo di quelli della concorrenza ma offre di più, ovvero la cosa più importante: il miglior codec Bluetooth.
PRO
- APT-X Low Latency
- Tasti volume e gestione tracce
- Facilità di utilizzo
- Batteria
CONTRO
- nessuno
Je ne sais pas comment sont les autres combinés emmetteur/recepteurs bluetooth, mais le Trond que j'ai acheté correspond exactement a mon besoin. Petit, leger, robuste, simple a utiliser, bonne autonomié, bonne puissance "output" en recepteur,et SAV au top! Le representant d'assistance ma ecrit avant meme que j'ai réceptionné l'appareil pour me proposer des conseils pour faciliter ma prise en main...(je n'en ai pas eu besoin, car l'interface utilisateur est parfaitement claire et l'appareil est "plug and play" . Je suis musicien et je l'utilise pour faire passer des musiques enregistrés de mon ipod a la sono pendant les pauses de nos spectacles, et pendant les repetitions aussi en utilisant mon ipod SANS FIL pour controler choix de musique et volume. C'est geniale. On peu se deplacer et garder le controle a tout moment. Rapport qualité prix imbattable. Avis spontané, non-solicité. Pierre
This Trond Bluetooth DUO device works almost perfectly with my PC. It supports AptX Low Latency for the best sound quality. It's definitely much better than the cheap USB Bluetooth adapter I was using before.
Pairing with my Bluetooth headset was easy. The hardest part is remembering what button presses are required! 3 seconds on the multi-function button (MFB) turns the device on or off. To enter pairing mode, it's a quick double tap on the MFB.
There's a red and blue LED - different combinations of flashing lights mean different things... you have to refer to the user manual to understand the flashes, which is a little annoying. Would it have cost much more to have several different LEDs with little icons to indicate their purpose? Even basic home Internet routers have several LEDs with icons.
This Trond device stopped working once during the first month of use. I had to switch it to receive mode and then back to transmit, then re-pair with my headphones, then it started working again.
One unfortunate problem is the noise generated when you have the power plugged in - you can hear low-level static interference while music plays. Not good. I would have happily paid more for a device that didn't suffer with such basic electrical interference.
For the price this device is fantastic. I just wish it was a little easier to use, with separate buttons for different functions and more LEDs so I didn't have to remember what all the morse code flashes mean! And the static noise while charging is a real shame.