I've had to learn about this hobby pretty fast. I always percieved the amplifier as something that had to be there, but had litttle overall bearing on the final quality of sound production. I thought SPEAKERS, and and that's about it. Obviously, the quality of the dvd player has a small influence, but it's come to my attention recently that it's actually rather important. I've been a little underwhelmed by the sound i'v ebeen getting from my B&W 603 speakers. ''Their supposed to be warm, full sounding speakers''. Anyway, most of that's been said in my other thread, so i won't repeat it. So besides volume(power), just how influential is the amp ranging from the measly £300 to the £2000 mark?