I have a Musica which I use with my Guanari's. The sound is great,very smooth and open sort of tubelike. It is rated at only 50 watts per channel, but has plenty of punch and volume. The design is very simple. There is only an off and on switch, an input switch, and a volume controll- no balance controll. I love mine and can't think of a better amp for my speekers. I'm glad to see other owners of Sonus Faber speekers agree. It is a very good bargain as faw as I'm concerned.