Another option is Nord Acoustics amps. Such as Nord Three SE 1ET400A MKII Dual Mono Stereo Amp. These have special "Rev D" input boards where you can swap out different op amps. I would say try first with their option of Sparkos Labs SS2590. Make sure you DO NOT get the silver-plated wire option.Hey Auxinput, I just ordered a Nord Acoustics amp, and I opted for the silver-plated wire option... why was that a mistake?
Thanks!