Audiophilepure

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“I learned that the M-900u uses v.4.0 of Luxman’s Only Distortion Negative Feedback (ODNF) circuitry, which they say reduces high-frequency distortion. Luxman says that the amp’s circuit boards are creamy white because they don’t use a green solder mask, which the engineers feel mucks up the sound.

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“Soundstaging and imaging weren’t the M-900u’s only strengths. The Luxman’s tonal balance was magic to my ears, and a perfect match for the speakers I primarily used it with: Sonus Faber’s Olympica III and Revel’s Performa3 F206. From top to bottom, the M-900u was as neutral as you’d expect a topflight solid-state amp to sound, and without the clinical or sterile quality that plagues some solid-state gear”