Jet City JCA 100 HDM/Soldano channel bleed/crosstalk toggle mod question

[mazuto]

Hi, my amp tech told me to ask around about this;
so basically I've got a Jet City JCA 100 HDM amp that has channel bleed/crosstalk.
I want to remove it, but make it switchable via a toggle switch, so that I retain the stock way the amp operates.
The amp was designed by Soldano and the schematics are almost identical to a SLO 100/Hot Rod 100, but the channel switching is done via optocouplers instead of a relay. My amp tech explained me how channel switching and the no crosstalk mod is usually done, but that this changes things, that he could probably do it by adding 2 relays but he's not sure if the optocoupling section has enough power to drive the relays. Any help is appreciated!

 

[jasonP]

It doesn't look like the schematic for the pre-amp is drawn correctly, however knowing this circuit and also building a turret board slo with stock, modified and modified relay switching, I would never go back to the original way Soldano does the switching with opto's as there is way to much channel bleed and crosstalk between the channels and it doesn't make the amp sound good or better.