Luxman introduces a new flagship stereo amplifier, with
12 watts (8Ω) pure Class A and 150 watts x 2 (8Ω) or 600 x 1 watts (8Ω)
when used as a monoblock.
The new ODNF 4.0 (Only Distortion Negative Feedback) reduces high
frequency distortion and delivers a smooth midrange, utterly grain free.
ODNF 4.0 ahs acq. As a stereo amplifier, the M-900u is stable into a 1
ohm load, where it delivers 1,200 watts, peak power. Due to ship towards
the end of April, pricing is yet to be determined.
The Luxman M-900u offers a powerful power supply with large capacity
20,000 μF × 4 block capacitors, OFC bus bar and direct hard wiring. The
EI type transformer itself implements flat square-shaped copper windings
minimizing line capacity, enhancing binding force and providing
excellent magnetic stability. Outputting an impressive 1,250 VA
(instantaneous 2,500 VA), the M-900u has the power required to drive any
speaker to peak performance.
The M-900u also utilizes 4 large capacity output relays offering an
incredible damping factor of 710. To eliminate stray magnetic fields and
associated impedance rises, Luxman developed a loop-less chassis
eliminating the possibility of ground loops within the M-900u chassis.
Cast iron legs act as a resonance sink and quickly drain vibrations
found within the unit.
Luxman does not settle on ordinary components within its products.
Rather, they design and build a large number of components found within
the M-900u. Wiring, capacitors and even terminals are hand selected to
meet the demanding standards at Luxman. Even the power cable was
carefully designed. The JPA-15000 power cable utilizes the highest
quality oxygen-free copper and take the last step in ensuring the purity
of the sound.
Gold-Plated, Peel Coat Circuit Boards
Printed Circuit Boards normally have a green coat (dye) that can be
printed upon, so the manufacturer knows where to place the copper traces
and where to insert the resistors & capacitors. Luxman’s designers
don’t like the sound of the green dye—in their extensive research they
found that it smears the sound, so instead they print onto a plastic
peel coat and remove it once the traces and mounting holes are in place.
Then the copper traces are gold-plated to reduce resistance across the
circuit, as well as eliminate copper’s corrosion over time.
Luxman never ceases in its quest for audio perfection. The M-900u represents a major step forward in this journey.
Unbalanced 1 system, balanced 1 system
Large-scale speaker terminal 1 system
Continuous power output
150W + 150W (8Ω) stereo, 300W + 300W (4Ω) stereo, 600W (8Ω) monaural
1.24V/150W (8Ω), GAIN 29.0dB
Unbalanced 51kΩ, 34kΩ balance
<0.0008% (1kHz/8Ω), ,0.1% (20Hz-20kHz/8Ω)
20Hz-20kHz (+0, -0.1dB), 1Hz – 130kHz (+0, -3.0dB)
Bipolar 4 parallel push-pull × 2
EI type 1,250 VA
AC115V (50 / 60Hz)
540W, 280W (under no signal) 1.0W (at standby)
Dimensions (w x h x d)
440 x 224 x 485mm
Dedicated remote cable, power cable (JPA-15000: polarity marked)