ADDAC712 – Vintage Pre – Full DIY Kit

£76.00 (Excl. VAT)

Discrete Gain Staging Amplifier

Out of stock

You must register to use the waitlist feature. Please login or create an account
SKU: Kit_ADDAC712_Vintage_Pre Categories: , , , , Brand: HP Size: 6 HP


The ADDAC712 is a dual channel discrete gain-staging amplifier, based on a famous discrete preamp board from the 70’s used in some legendary equipment. What makes this circuit special is the character of the clipping and resulting saturation/distortion. The module can be used with modular signals to add a distortion/fuzz character or as a preamp for an external sources such as a line signal, keyboard, guitar. This module is a great side companion for the ADDAC711 Balanced Inputs.

The two channels deliver a rich sound that makes old-school charm and distortion a breeze. Each two channels has a bypass switch to bypass the gain knob, allowing the signal to be handled directly at the output knob. This output parameter is ideal to tame the signal previously slammed with gain. Furthermore, there is a front trimmer with which the maximum gain can be adjusted as well as a clipping LED.

ADDAC712 – Build DocumentUser Manual


  • Two channels with discrete gain
  • x2 opamp-based output gain stage
  • Clip LED
  • Gain trimmer
  • Left audio input is normalized to the right audio input


  • Depth: 6HP
  • Width: 40mm
  • Power Consumption: 40mA +12V, 40mA -12V

Additional information

Weight 0.115 kg
HP Size