AI-generated product photo — not official manufacturer imagery.
DigitalCD PlayersDACsDiscontinued
Estimated price (community-sourced)
$8,868.60
Around — community and catalog average, updates slowly
About the SDR-4000 SL
The Spectral SDR-4000SL Reference CD Processor is a limited-edition, high-end CD processor crafted and individually programmed/calibrated by Spectral’s engineering department. It is positioned as the final, most uncompromising generation of Spectral’s SDR digital program and uses a double-balanced DAC architecture, HDCD processing, and a fully discrete analog output stage. The model was introduced at a list price of $19,000 and was produced in limited quantities; it is commonly seen on the used market today.
Specifications
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