Thanks very much for the indepth explanation man.
The 2:90 seems unaffected by my Y-cable folly, but i wont be doing that again!
I set it up exactly as you have said , and got it all working
Absolutely AMAZING experience, first time tube/rack , this is 100% the way to go.
Unfortunately my triaxis keeps powering down every 10mins , and now the front panel wont lightup atall, yet the valves are still running fine.
So im currently using the ADA 3tm , which is KILLER , literally the entire decade of the 80s in a box !
Just another few questions , what should the input switches be set to on the 2:90 and ADA - LINE LEVEL or INSTRUMENT LEVEL ? Everything seems fine now, asthough they dont need changed but i still want to know, so i understand it fully.
Also , seeing as the mesa is unbiased , and its "2 amps in one" , would i be right in saying i could run one side in 6L6 mode and the other in EL34 mode , so i can get a variation in sound?
Im off to rock again for an hour , cant stay away from the thing! Back soon to check replies dudes , many thanks