The SLI 80 is a shrewdly designed tube amp. It does everything I've described so well that I was able to completely concentrate on the music and its message. Coltrane's playing seemed more plaintive, his solos built from ever-more-urgent phrases. Wes Montgomery's thumb had pop and bounce, joy and direction. Music had what I crave — emotional impact and life. The Cary has been designed to maximize the strengths of its tube topology and connect the listener directly to the flow of the music.