CP5 Colour Mic Preamp


The CP5 is the first microphone preamp to feature Colour. On its own, the CP5 is a reference-quality, 500-series mic preamp with copious amounts of clean gain. With Colour, the CP5 is the most tonally versatile preamp in the world.

World Class Preamp. The CP5 is a transparent, low-noise preamp that performs as good or better than preamps 5x the price (seriously, check out the SPECS tab above). The preamp's signal path features only best-in-class components, including WIMA capacitors and THAT Corp. ICs. Preamp gain and Colour are adjustable via stepped controls for easy recall and stereo operation.

Add Some Colour. Plug any Colour module into the CP5 to add some character to your preamp. Dial in the exact amount of Colour you want with the stepped Colour control. Switch between tone and transparency with the Colour bypass switch. The CP5's preamp works with or without a Colour installed.

Beginner Friendly. Like all our kits, the CP5 comes with every part required and step-by-step picture instructions.


  • Fully compatible with the 500-series format
  • Stepped controls (21 positions) for easy recall and stereo operation
  • Anodized black aluminum knobs and front panel
  • Phantom power, polarity, -20dB pad, and Colour switches
  • Mic preamp gain adjustable from +20-66dB
  • Ultra-transparent, low-noise preamp
    • No electrolytic capacitors or transformers in the signal path
    • WIMA film coupling capacitors
    • Based on the best-in-class THAT Corp. 1512 preamplifier IC
    • Electronically balanced inputs and outputs
  • Single Colour socket
  • Colour control adjusts amount of Colour without changing overall gain
  • Kit includes every component required to build the CP5
  • Step-by-step manual and guaranteed support 

The CP5 circuit and PCB layout were designed by Peter and Robert-Eric Gaskell of GKL Audio.

What the Pros are Saying

"Undoubtedly the most flexible and variable mic pre out there. And if you know how to solder it’s at an unparalleled price point for its quality. Pro tip... it pairs extraordinarily well with DIYRE passive summing mixers for even more tonal flexibility on your mix bus or group buses."

-Jack Mason
J.Cole, Joe P, Spotify Singles

"This really is one of the most versatile and useful preamps on the market. If you like getting your hands on a soldering iron, it can be one of the most satisfying to own as well."

-Sonic Scoop

Dialing in drum sounds with the CP5 and Colours:

CP5 ($150) ($745)
Input Impedance 3.6k/7.2k (pad out / pad in)
Gain 20-66dB, unity gain with pad engaged
Pad Attenuation 20dB
THD+N @ 20dB gain* 0.00040% <0.00085%
THD+N @ 40dB gain* 0.0007% <0.0010%
THD+N @ 60dB gain* 0.005% <0.005%
Noise (EIN), 66dB gain, 150Ω source -128dB -128dB
CMRR @ 10kHz, 60dB gain 80dB 65dB

*+20dBu output, 1kHz, 20-20kHz bandwidth

Customer Reviews

Based on 51 reviews
Stephen Goldstone
CP5 Mic Preamp

Excellent customer service, product and quality. Easy to follow build guide. I built this for my son, the end user. He tells me its great!

John Miller
Amazing mic pre

The CP5 on its own without a module is a must-have piece of gear. So much clean gain before even hitting the converters, you really can’t beat that for the price. I put the Royal Blue Colour module in mine and it’s a game changer!

Janez Gostinčar

Now i own 16x CP5 mic pre, all with 15ips modules.
I use this setup for recording via tape to daw, without need for real tape. Sound is similar to real tape recordings, smooth or tape saturated. Its all about the flavour you want. Great job DIYRE!

Love it

Love this pre.Not only is it a great stand alone preamp - transparent and low noise. The color feature is really nifty. To be able to change the character of this preamp and add different sorts of saturation, the classic auras of iconic gear, or just plain cracked and smashed distortion, is a really cool idea. Add to that they have the best support of any business I've ever purchased anything from. Ill be building more of these for sure.

Severely Underated

Bought a pair of these as a fun DIY project. Didn't really expect them to sound as good as they do, and the colour modules are nuts.

I ended up with a 15fps, and fuzz pedal, and both have their own distinct flavors.

These preamps went from being additional utlity preamps, to being my top choices for a bunch of sources.

Will be buying more and more of them.

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