Luxman L-509Z Flagship Integrated Amplifier
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The Luxman L-509Z is the first to offer LIFES1.0 stages in both preamp and power amp and the first with LECUA-EX volume control.
The new L509Z is the third component to incorporate Integrated Feedback Engine System (LIFES1.0) and the first to have it not only in the power amplifier section, but also the preamplifier. The circuit is the latest expression in Luxman’s multi-decade quest to overcome the long-standing tradeoffs in amplifier negative feedback. 

Negative feedback has always been a double-edged sword. While feedback plays a central role in reducing distortion, even minuscule inaccuracies in its application can compromise the expressive power of music reproduction. It was to overcome this paradox that Luxman created the Only Distortion Negative Feedback (ODNF) circuit in 1999 and refined it through five generations up to 2021.

LIFES1.0 supersedes even these proud achievements, with a completely redesigned circuit featuring improvements in distortion detection, regulation, and thermal stability. The result is a rare combination of exceptionally low distortion and the natural sound quality associated with “non-feedback” circuits.

The L-509Z combines high power and superb linearity, thanks to three stage Darlington bipolar transistors in quadruple-paralleled push-pull configuration. The highly regulated power supply boasts a massive, 600 VA EI-type transformer and an array of eight 10,000 µF filter capacitors.
The Luxman L-509Z integrated amplifier is available immediately at a suggested retail price of $12,495.

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