FET-72 Colour Module

Classic German Channel

for Chroma, Mister Focus, & DIYRE Colour

Overview

The Locomotive Audio FET-72 Colour Module puts a fun spin on the classic V72-style tube amplifier circuit by using JFETs instead of vacuum tubes. This module will give you access to the familiar German module sound while offering plenty of options and flexibility.

When set to “Classic” mode (switches set to NFB and Pentode), the FET-72 sounds most like its vintage inspiration, boasting a big, thick low end and smooth top without sounding dark. By removing negative feedback (switch set to NO NFB), the frequency response will be rounded off, making the low end less pronounced. Set to Triode mode, the high-frequency response will drop subtly, and there will be a smoother transition from clean to distorted when using your Colour Palette’s Drive control. Pentode mode is much more aggressive in nature.

The 4-position “HI CUT” (low pass filter) gives you flexibility when driving the module for a harmonic/thickening effect. Using one of the low pass filters will make the naturally brightened result of added harmonic distortion less pronounced, allowing the user to truly shape their sound to taste.

Features

• Triode or Pentode mode
• Negative Feedback (NFB) or No Negative Feedback (NO NFB)
• Output transformer offers depth and weight to the audio
• Jumpered 4-position low pass filter (Off, 18kHz, 12kHz, 6kHz)
• Compatible with Chroma, Mister Focus, and DIYRE Colour 

Fully assembled and tested by Locomotive Audio.

Chroma 500 Series module, Mister Focus 500 Series module, or DIYRE Colour Palette must be purchased separately.

Note: Changing switch positions can introduce pops and clicks. It is advised to reduce monitoring volume when switching to protect your ears and your monitors from damage.

*The FET-72 is not made or designed by Telefunken or TAB-Funkenwerk. Telefunken is a registered trademark of Telefunken Licenses GmbH. V72 is a registered trademark of TAB-Funkenwerk. Locomotive Audio and DIYRE are not affiliated with or endorsed by these companies.

Documentation

About Colour

Colour is an exciting new modular platform for creating your own custom analog signal chains. The ever-growing family of modules allows you to bring multiple stages of high end analog processing to your setup a la carte. These are real analog plugins.

The Colour platform consists of Colour modules and hosts like Chroma and the DIY Recording Equipment Colour Palette. Colour modules are ultra-compact, swappable analog circuit blocks that snap into Chroma and impart various types of analog color such as distortion, saturation, compression, EQ, and even echo. Chroma provides drive and wet/dry mix controls, power, and support circuitry for one module.

The Colour Palette is a 3-slot host available as a 500 Series unit from DIY Recording Equipment. In the near future there will be rackmount version of the Colour Palette as well.