I finally got my DIY Rotary Mixer working, and I’m quite happy with it!
It has 2 lines, a PFL, individual and Master gain, and a High-Pass filter for some isolator-like action.
I also found some inexpensive backlit retro style analog Vu-Meters.
All impedances are dealt with using TL072 op-amps.
Here it is in action:
My next step is adding one HP Filter per channel..
Here are a few pictures from the build:
This is great! Do you have a circuit diagram for it?