Khokugo, the ARC100.2 is an all-FET transistor design which in my opinion sounds somewhat veiled compared to solid state amps possessing bipolar transisitor outputs or even MOSFET outputs. The 100.2 has the same "problems" that older all-FET Conrad Johnson SS amps had, although in newer CJ's they've switched to bipolar output (keeping only the FET gain stage), for increased clarity while retaining some warmth. (See Stereophile review of CJ MF2500 amp for details.) If you listen a lot to classical and want to avoid the harshness of many bipolar amps (e.g. steely violin sections), you should try some MOSFET-output amps, which are being made nowdays much better than before (they used to be somewhat hazy and bass-wimpy). With MOSFETs you get the warmth & 3-D imaging of tubes without the etched/brittle sound of many pure-bipolar transisitor amps. There are many such amps available; do a search on AudioAsylum (using keyword MOSFET) for many discussions and recommendations. Finally, consider the new BelCanto EVo200.2 solid state amp (which I own, and can be found used for as low as $1600). It has a unique MOSFET-type switching ouput device, and is a great synthesis of solid-state and tube-like character. Of course, you could go in the direction of tube amps, but in my experience dealing with tube gear can be expensive and complicated. (Tube amps can sound wonderful, though...) Good luck in your search.
