Luxman P-750u
The Luxman P-750u is a solid-state headphone amplifier that retailed for $4,995. Documentation on the original P-750u is thin. No production years, power ratings or detailed circuit analysis survive in the record. What is known points to a serious, late-era Luxman flagship.
The amp has three headphone output jack sets: a 6.3mm single-ended jack, a four-pin balanced XLR, and separate left and right three-pin balanced XLR outputs. Only one output is active at a time, so there's no risk of driving two pairs at once. It was described as a "meticulously refined evolution" of the P-700u, itself a well-regarded high-end headphone amplifier. The design uses Luxman's ODNF (Only Distortion Negative Feedback) circuit, Version 4.0, on each of four identical output channels, plus a three-stage Darlington output stage.
CNET (2016) was enthusiastic, noting that running a hand over the thick faceplate and machined knobs makes clear this is "the very best of 21st century Japanese high-end audio." The same review praised its dynamics and detail, contrasting it favorably with the warmer, tube-based ALO Audio Studio 6. Other reviewers called it "one of the finest headphone amplifiers I've had the pleasure to experience," saying it reveals as much music as five-figure amplifiers they'd auditioned.
Known specifications:
- Solid-state design
- Three headphone output jack sets: 6.3mm, four-pin balanced XLR, and dual three-pin balanced XLR (left/right)
- Only one headphone output active at a time
- ODNF Version 4.0 feedback circuit
- Three-stage Darlington output
- Price when new: $4,995
Note: The P-750u MARK II is a distinct, later variant with cast-iron legs borrowed from Luxman's 900-series separates. Several online listings labeled simply "P-750u" actually describe the MARK II, so check which one you're reading about. The specs above apply only to the original.
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