The Supa-Trem has been an extremely successful pedal for me over the last 15 years, partly due to the TONE of the circuit, which has a very good sounding JFET amplifier at its heart.
Another key ingredient has been the Fulltone Opto-1 photocell that I designed and have made...it has the optimal resistance range, as well as the correct rise and fall times for all speeds required for a great Tremolo pedal.
A while back I started wondering what would happen if I took two completely separate Supa-Trem circuits and joined them together! Not fake-stereo like other Tremolo, Chorus, Phase, Flanger, etc pedals which simply invert the signal at the output and send it to another jack. Two identical circuits in TRUE-STEREO with two INs and two OUTs!
"Can you get True-Stereo from MONO in?" Yes!
And both amps are still live when the ST-2 is turned OFF with no tone loss due to its hi-quality JFET buffered outputs. The ST-2 is the IDEAL device to place at the end of your chain...run cables as long as you want, use it as your amp splitter.