For sale are these incredible Teresonic Magus Silver XR speakers. They have no competition if you are looking for high sensitivity small bookshelf speakers which you can use with the lowest powered amps out there. I have used them with amps as low .75 watts and they play loudly. Coherence, naturalness and speed that inefficient multi driver speakers can only dream of. Match them with a SET tube amp, and you have arrived in audio heaven. Conservatively rated an 8, these are in the same condition as when i bought them new from manufacturer.