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The VAC Sigma Preamplifier provides the best sound possible without resorting to the most expensive techniques. The four tube Class A1 triode line stage offers superb sound and has balanced outputs, remote control, the VAC Cinema Bypass™, specially shielded power transformers, and 12.5 mm sculpted aluminum fascia with lacquer finish.

For LP playback, a passively equalized three tube MM or MM/MC phono stage may be specified.

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