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ISP Technologies Stealth 180-watt Pedalboard Power Amp

Stereo Power Amplifier, Class A/B, 180W at 8 Ohms, 2 x 80W at 4 Ohms, 100VAC-240VAC Operation, and Internal Protection Circuits
$396.70

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ISP Technologies Stealth 180-watt Pedalboard Power Amp
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Impressive Power, Size, and Tone

The ISP Technologies Stealth pedalboard power amp is one of the smallest, lightest high-power amplifiers you can get for your guitar rig. It's just 9" x 4" x 2", it packs 180 watts of power with a Class A/B amp design for top-notch tone and saturation performance. Use the Stealth power amp as a high-power engine to drive a single cabinet at incredible volume, or use it in stereo to power two cabinets with 80 watts a piece. When high power and compact design is your solution, turn to the ISP Technologies Stealth power amp.
Note: This device is intended to drive a speaker cabinet and should not be placed in front of an amplifier or pedals.

High power that can fit on your pedalboard

The Stealth power amp can be the foundation of an incredibly compact yet powerful guitar rig. It's only 9" x 4" x 2", small enough to fit on larger pedalboards. And the Stealth can power a single 4 x12" cab at 8 ohms with incredible volume, or you can use it in stereo mode to send 80 watts to two 4-ohm cabinets.

Smart design sets a high standard for performance

High power aside, the ISP Technologies Stealth is built to incredibly high standards. It's got internal protection against shorts, open circuits, and incorrect impedance loads. An internal power on/off output control circuit also prevents pops when you turn it on and off. In other words, you can count on the Stealth power amp at every gig.

ISP Technologies Stealth 180-watt Power Amplifier Features:
  • Compact high-power pedalboard power amp
  • Powers 1 x 8-ohm cabinet with 180 watts, or 2 x 4-ohm cabinets at 80 watts each
  • 16-ohm operation approved by manufacturer - delivers around 60% of the power compared to an 8-ohm load
  • Internal protection against shorts, open circuits, and incorrect impedance loads
  • Internal output control circuit prevents damaging pops when turning amp on/off
  • Class A/B amplifier provides great-sounding analog saturation and clipping
  • Includes rack ears

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Tech Specs

  • Type: Solid state
  • Number of Channels: 2
  • Total Power: 80W @ 4 ohms per side (up to 90W 10% dist), 180W @ 8 ohms Mono Bridge mode
  • Inputs: 2 x 1/4"
  • Outputs: 2 x 1/4" (stereo mode), 1 x 1/4" (mono bridge mode)
  • Footswitch Included: No
  • Power Source: 19V DC power supply (included)
  • Height: 1.75"
  • Width: 9"
  • Depth: 4"
  • Weight: 1.2 lbs.
  • Manufacturer Part Number: Stealth PRO Power Amp

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Customer Reviews

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Rated 5/5

Awesome Little Amp

I got to use the Isp Stealth at my bands practice last night. I wanted something compact so I don't have to haul a amp head everywhere. First off I was surprised at how loud it was at practice. My drummer made me turn it down because he said I was blasting him. I used this with my Helix LT and my tone was pure and clean. I play in a metal band and from what I heard at practice this little amp would be awesome in any setting or venue I would play in. If you want to scale down and want a big sound from a small package I would recommend the ISP stealth.
Rated 5/5

Loud and Proud

My band runs our rig all contained in a single 16U rack (also purchased from Sweetwater), and we all use in ear monitors to hear things on stage. The guitars run through HX Stomp units, and while we don't NEED to have stage sound, we still run two 2x12s on stage just in case something happens with the rig, and also for the people in front of the stage who might not have a good angle from the house mains.

Our cabs are both actually 16 ohm, so not the most efficient use of the power available in this unit, but with the volume knob at around 3 o'clock, both guitars are still plenty loud enough in a live setting. If we needed more volume, we could easily rewire our cabs to 4ohms and get even more, but we honestly don't need to atm.

I really like the small form factor, the light weight, no heat, no noise, etc. I also really like that it's just one volume knob. Myself and the other guitarist have our tones dialed in and balanced before even going to this power amp, so being able to turn our volumes up or down together is amazing.

Special thanks to Brent Leuthold for always hooking me up with whatever I need!
Music background: Touring Musician
Rated 5/5

Outstanding simplicity!

I use a Boss GT100 into the Stealth into two Yamaha 1x12 cabs for a small but very loud (or quiet) stereo rig, or I stack the cabs. I also run it into a Marshall 1960A 4x12 when I want a different sound. Either way it sounds amazing. No more heavy tube amps for me as this set up rules and covers all the sounds one can think of. Can't believe such a small power amp can be so amazing and reliable.
Music background: Gigging local musician.
Rated 5/5

Great

This unit sounds great and is nice and small and light. I runs the awesome ISP MS Theta Pro into the Stealth in stereo and then into two Avatar 2x12 cabs with Vintage 30 and G12H-30 mix. Huge stereo sound. To compare I tried a more standard 2U rack 175 watt power amp and it was big and heavy with a fan and the Stealth sounds better. Sounds like a guitar should through the guitar cabs. The larger standard power amp had an odd sound - like the main sound was surrounded by a diffuse space. Kind of dispersed. The Stealth sounds present and punchy but smooth and professional. By the way just discovered the Crimson Idol, excellent.
Rated 5/5

Very cool!

This thing delivers as promised. I run a Helix into this, and out into a Panama 2x12 cab that I rewired for stereo. Even in stereo mode, it has PLENTY of power for a live situation. One caveat: for those who were previously running a tube power amp with a preamp section (ancient Mesa/Boogie 50/50 for me), you'll have to do quite a bit of adjusting of EQ and/or models, as the ISP is VERY clean, with no tone coloration whatsoever. I went from using a preamp-only model to a full amp model, including the power amp model, and all was solved.

But the BEST feature of this thing is the 1.2 pound weight. Throw it in a gig bag and go. No more hauling around that heavy tube power amp!
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