"The output rating is one the of the highest I have seen of any 300B-based amplifier. It manages to pump out 30W per channel with only two 300B tubes per channel. The circuit is pure class A with zero negative feedback. When I ask Mr. Sanavio about his secrets for achieving such a high output, he said much of it is due to the output transformer which are wounded in house by hand.
The Mastersound drove the Orpheus gloriously with all the top-end glamour as can be expected from any 300B-based amplifier, the only difference is the Orpheus is rated at only 87 dB, a sensitivity rating which usually calls for higher output solid-state amplifiers. I was impressed! "