Further Information
Excellent Japanese-built integrated amp, second owner, includes remote and original double boxes.
Specifications
Power output: 110 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 100kHz
Total harmonic distortion: 0.04%
Input sensitivity: 0.3mV (MC), 2.5mV (MM), 180mV (line)
Signal to noise ratio: 75dB (MC), 91dB (MM), 105dB (line)
Dimensions: 440 x 177 x 454mm
Weight: 23.9kg
Accessories: remote control
Year: 2013-21
The L-507uX is specified 2x110W into 8 Ω or 2x210W into 4 Ω. From factory the L-507uX is equipped with excellent phono and headphone preamps. The L-507uX is built around three pairs of bipolar devices per channel that operate in parallel push-pull, filtration capacitors with storage capacity of 40.000 µF and a hand-wound EI-core transformer that was adapted to minimize EMI radiation.
Luxman is famous for using untraditional solution to feedback that consists only of those parts of signal that are evaluated by the control circuit as distortion. The ODNF – Only Distortion Negative Feedback - solution was introduced in 1999 and patented by Luxman; in the L-507uX there is the new ODNF 3.0 version that is an AB counterpart of the ODNF 3.0A found in the L-590AX. By using the ODNF the L-507uX raises the line level output S/N ratio to 105dB at 20-100,000Hz. But there is much more to the L-507uX, like smooth curves of PCB paths visible on internal boards to mimick standard twists and turns of wiring and where real wires are used they are proprietary Luxman OFC conductors with special shielding.
The new LECUA 1000WM (Luxman Electric Controlled Ultimate Attenuator) is the most advanced solution to volume regulation that has been introduced by Luxman so far. The setting of the VOLUME knob is detected by sensors that activate a microprocessor controlled circuit that sets one of the thousands combinations of current switches to control the volume in the current domain. By doing this the LECUA volume control is not the function of impedance anymore so the frequency response and signal to noise ratio are uniform across the whole range of the volume – something that is not possible with standard resistor based attenuators. Another asset is that both channels are attenuated identically with no tracking errors and crosstalk consequently.
ELECTRICAL DISCLAIMER
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