Guavatone Orange 86 Tube Preamp

Projects > Guavatone Orange 86 Tube Preamp

The Orange 86 is a two-stage tube microphone preamp based on the Redd 47.  Guavatone offers PCBs for the preamp and power supply.  There are also small, add-on PCBs for DI, pad/+48v, output polarity relay, and a pc-mount Grayhill gain switch.

Notable Features:

  • Ability to experiment with different tubes for the second gain stage
  • 12-position Grayhill gain switch
  • “Squish” option to experiment with compression
  • DC heater, P48, and relay control PCB can provide power for two Orange 86s


  • Discontinued