Luxman MU-80 (2003–2007)
The MU-80 is a multi-channel power amplifier from Luxman's modern era, built in Japan between roughly 2003 and 2007. It was a high-current machine. The power consumption figure alone (1,040W at rated output) says it wasn't a casual home theater amp. The front panel is aluminum silver with a gray cover, and it came with a remote control.
What little documentation survives points to a design using Luxman's proprietary ODNF (Only Distortion Negative Feedback) circuit, version 2.2, along with a generously specified power supply section. The MU-80 could be set up in more than one way. One Japanese source rates it at 100W per channel across all eight channels at 8Ω, and notes that via BTL (bridged) connection it can deliver 300W per channel in four-channel operation. A separate listing cites 75W×8 at 8Ω and 220W×4 in BTL. The record doesn't settle which is right, so treat the exact figures with some caution.
The MU-80 appears in period imagery alongside Luxman's C-70f preamplifier, which suggests it was meant to anchor a high-end separates system, but no explicit family documentation has surfaced. A German reference mentions a CD player of the same series, though the model isn't named. HifiShark listings (citing Yahoo Auctions Japan) show examples changing hands with enthusiastic notes. One seller simply wrote "good sound.!" The amplifier also has enough of a following in Japan that buyback/appraisal services list it.
Surviving auction records show strong collector interest. One listing for an "AIRBOW TUNED" example with original box drew a bid of ¥398,000 in early 2017, and a more standard unit reached ¥280,000 in September 2021. A separate Yahoo! Japan auction closed at ¥203,500. Condition on these was typically described as having some scratches or dirt, but units often came with their original packaging. A period brochure (9 pages) is known to exist.
Beyond this, the record is thin. No original retail price, weight, frequency response, or THD figures have been documented, and no in-depth period reviews have surfaced in English.
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