Sounds pretty awesome.shagin beast of a build like 13+ controls, 50+ resistors, 6 ICs.
For the Ampeg side its, Gain, Ultra Low Switch, Bass, Treble, Mid, Mid Select, Volume
For the DA120 side its, Gain, Depth, Bass, Treble, Boost Volume.
Theres a Master Volume for the summed output, ability to run the outputs stereo separate or mono summed (all before the DI output) and then also the DI output which would have Phase Flip Switch.
What do "Depth" and "Boost" do?