Its pretty amazing that these guys have a review up on the C-700u / M-700u already; we have not received our first production shipment yet from Japan. The ship with the first shipment is actually arriving at the port of Long Beach today.
"To conclude I can only reconfirm that Luxman have made a quantum leap with the new generation models. The difference between its top amplifiers is rather the one in sonic character – the M-900u is closer to the previous Luxman’s class A sound, the M-700u is closer to class AB, irrespective that both are actually class AB amps. Yet both represent great value for money and a hot tip of the season."
http://www.audiodrom.cz/recenze/zesilovace/493.html