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About the SDA-490t
The Carver SD/A-490t is a high-end vacuum tube reference CD player from 1991, utilizing two 6DJ8 vacuum tubes in the final output stage to achieve very low static and transient distortion while providing extremely high dynamic headroom. It employs a Bitstream Conversion Linear Single Bit D/A Converter (1-bit MASH), triple-beam laser scanning, full remote control with volume control, random play, variable-length fade, Edit/Time Fade for CD-to-tape copies, and Soft EQ (Digital Time Lens circuit) to preserve sonic depth and reduce excessive brightness. The tubes operate at less than 25% capacity, ensuring longevity without replacement. Digital outputs include coaxial and optical. It is no longer manufactured and available used on secondary markets.[1][2][6]
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