I have tried the integrated route, and Mapman makes a very strong case for integrateds and he is 100% right. On the other hand, I've not been able to find an integrated that can perform at the level of separates in my system, although at a higher cost and system complexity. Maybe the VAC Phi Beta is in that category on an integrated without compromise, but not cheap. I would also think that an integrated with a passive attenuator should not sound to different, maybe better, than the same amp with a separate passive, but I don't think you could the same quality from a built in active pre section in an integrated.