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Purple Audio Biz 500 Series Microphone Preamp

500 Series Preamp Module with Three Amplifiers, Discrete Signal Path, Metering, and DI
$775.00

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Purple Audio Biz 500 Series Microphone Preamp
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This article was Written By

Our Product Research Team

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Give Your Mics the Biz

Need a 500 Series mic pre with big-time versatility? Sweetwater has an excellent suggestion: the Purple Audio Biz. This unique three-amplifier, discrete preamp sports a Class AB opamp that can muster 27dB of gain, plus a gain pot that lets you get it just right. Hit the "Dual" switch, and your gain splits between two Class A opamps, giving you up to 75dBu of clean gain - ideal for your ribbon mics. If you want tasty coloration, you can dial up quite a palette using different Gain, Level, and Dual settings. There's even a great-sounding front-panel DI on the Purple Audio Biz.

Purple Audio Biz 500 Series Preamp Module Features at a Glance:
  • Discrete signal path
  • Output level control; input and output tri-color LED metering
  • Mic/Line switch for rack input
  • Bridging line input for high output mics or line level sources
  • Load switch for front panel DI: 33kohms or 100kohms for a more open tone
  • Auto-resetting fuse shuts down individual module without affecting entire rack or console
Purple Audio's Biz: great-sounding and amazingly flexible!

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Tech Specs

  • Preamp Type: Solid State
  • Number of Channels: 1
  • Frequency Response: 10Hz-70kHz
  • Phantom Power: Yes
  • Manufacturer Part Number: Biz MK

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Customer Reviews

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Rated 5/5

Very cool, very colorful

I use this on everything; vox, guitars, bass, drums, busses, even samples. It reminds me of a blend of an api and neve, with some really nice thickness and weight while retaining a nice foward midrange and punch. I do wish the labeling was more clear on the front panel. The reference dots on the gain and level control do not align at 12 oclock and it throws me off every time. However, the build quality and features make up for it. The Dual switch really gives it some balls. I also find myself using the impedence switch for the di often; both yield tasty results. Lots of mojo in this preamp, but I found it easy to get clean tones, too. For the price, I am more than satisfied. Underrated preamp for sure.
Music background: Recording Engineering,
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