1981 Inventions DRV MOD1 Hyperfade Black Distortion Guitar Pedal

1981 Inventions DRV "Mod 1" in Hyperfade. Mint condition.
Comes with extra op amps (OPA2134 installed)

Some builder info:
"I’m sending this pedal with the OPA2134 (Burr Brown) op-amp, but it will also come with a standard TL072, and also an NE5532 op-amp.
This variant will not be around long, and will be limited by nature of my ability to build. It sounds overall a bit warmer, fatter, a little cleaner, smoother, similar to the recently release “PROTOTYPE” version.

This version of DRV also has a zero gain mode (a bit of an Easter Egg), which is really nice. When you turn the DRV knob all the way down, it takes all of the distortion side of the circuit, and you only hear the preamp. In order to get a useful sound out of this mode, you need to completely open up the CUT knob (turn it all the way down), and even then it’s still a little dark, but really cool sounding. At this point, you are hearing the dark nature of the preamp section that is “always on” within the DRV circuit.