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Precision Craftsmanship & Outstanding performance from Japan
Beneath the elegant shell of a Luxman amplifier, lies innovative circuitry, meticulous attention to detail and plain common sense.
Only Distortion Negative Feedback (ODNF)
Luxman's patented ODNF circuitry has redefined the relationship between music signals and noise and does not use phase compensation or NFB loops in the music signal path, instead it accurately isolates distortion components to cancel them.
Luxman nowadays use a distortion reduction circuit called Only Distortion Negative Feedback (ODNF). This system works by isolating noise & distortion at the output from the music signal and sparingly applying negative feedback to suppress them. Conventional negative feedback systems can have an adverse effect on the music, introducing phase distortion. "The circuit features such an ultra-wide range, ultra- high slew rate and ultra low distortion that it does not use phase compensation for the music signal amplifying circuits." This new technology also ensures that need for a DC servo circuit is alleviated, again improving sound quality.
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..
Mechanical Grounding & Resonance Control
Mechanical grounding and resonance control are taken very seriously in order to allow the electrical circuits operate at their optimum. The cast iron feet are directly connected to the heavily dampened bottom board in order to minimize vibration being conducted throughout the chassis. Similarly Luxman tune the chassis from a resonance perspective in order maintain pace and rhythm. The fasteners torque settings are carefully measured for the sonic optimum.