Thanks for all your responses. I am currently using an ARC VT100 MkII. I am not using a preamp, but rather the volume control on the crossover-amp. I do not like a bright sound, so I'm not sure the Innersound amp would work for me. Anybody tried the MC275 ? How about Wolcott ? Anybody used the i-tube (Western Reseve Audio Design) ? Plato, are you still using the Inersound crossover, just not the built in amp ? thanks