I agree that, in the solid state camp, First Watt amps would be pretty good. They really do not sound like good tube amps (they still have a smidge of an artificial sounding initial attack to the note), but they are very dynamic and lively sounding at lower volume (where most solid state sounds lifeless), and do not sound harmonically thinned out like most solid state stuff. I am not a fan of Pass gear, but, the two First Watt amps I heard sounded quite good. I had a friend's amp in my system for two weeks and I liked it a lot. Unfortunately, they are not cheap enough to be considered for a temporary solid state fill in. Perhaps a Bel Canto class D amp would make a good temporary amp. I have heard their entry level amp on Harbeth and ProAc speakers and it sounds decent.