Luxman M-900u, Owner'S Manual

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2
Features of This Unit
4 x 2 output structure
This product has inherited the idea of 4 x 4 output from
B-1000f, and has adopted the structure of 4 parallels x 2
modules, that is, 2 modules of 4-parallel push-pull amplifi-
cation circuit structured with 3-stage Darlington are used for
each channel.
Rated output of 150 W+150 W (8Ω), 300 W+300 W (4Ω)
ODNF
- Only Distortion Negative Feedback -
The amplification feedback circuit that has acquired the high-
speed primary slew rate and ultra-wide bandwidth by feeding
back only distortion components generated during amplifica-
tion to maintain the pure sound quality of the main-amplifier
that is almost non-feedback.
The newest version, 4.0, has achieved the low impedance
and high S/N ratio of the transmission circuit thanks to 4-par-
allelized first stage and Darlington-connected second stage
of the amplification circuit.
In addition, the input stages of the error detection circuit are
3-parallelized to improve distortion and noise.
BTL connection mode
The BTL connection mode with use of 2 units of this product
has achieved a high-quality and high-power monaural ampli-
fier structure.
2-channel input selector
Capability of switching between unbalanced input of RCA
terminal made of copper alloy and balanced input of XLR
terminal manufactured by Neutrik that supports high-grade
balanced signal transmission.
Balanced input phase selection
Balanced input phase selection switch equipped, which is
useful for the case of connecting foreign-made input devices.
Selector relay
Selector relay with high sound quality used in the key point of
Luxman amplifier, which enhances the separation and cross-
talk performances.
High-inertia power supply
High-inertia power supply circuit that combines a large-ca-
pacity EI-core-type power transformer using rectangular
copper winding wires with customizable 20,000μF × 4 block
capacitors.