I picked up a CS15 AVR yesterday [having ordered it at the beginning of June]. I needed the AVR capability as my local power grid is a little on the "vintage" side and during the summer the voltage supply can fluctuate between 95V-115V. The fluctuation caused my B100 to shut itself down continually and I didn't feel like packing it up for the summer. I left the Torus on yesterday, logged the in/out supply on a five minute basis and noticed that the input ranged from 102V to 115V with output ranging from 117V to 123V. The B100 didn't shutdown nor did the 4BSST2 and the sound was excellent. A great purchase, exactly what was promised.