RetroSound Repair and Restoration, LLC
Dual 521 Fully Automatic Belt-Drive Turntable
Vintage German Engineering for the Modern Vinyl Enthusiast
Experience the golden era of analog audio with the Dual 521, a classic, fully automatic turntable crafted in West Germany during the late 1970s. Renowned for its precision mechanics and bulletproof reliability, the Dual 521 offers the perfect bridge between audiophile-grade performance and effortless, everyday usability.
Whether you are rediscovering your classic rock collection or spinning brand-new heavyweight vinyl, this deck delivers the warm, detailed, organic sound that only a true vintage system can provide.
Key Performance Features
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Precision Belt-Drive System: Powered by a robust 8-pole synchronous motor, the precision flat-belt drive system isolates motor vibrations away from the platter, ensuring incredibly low wow-and-flutter (< 0.08%) and dead-silent operation.
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True 4-Point Gimbal Tonearm: Features a low-mass, torsion-resistant tubular aluminum tonearm mounted in a high-precision four-point gimbal suspension. This ensures flawless tracking, minimal record wear, and maximum detail extraction from your record grooves.
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3-Point Floating Sub-Chassis Suspension: Built with Dual’s iconic spring-isolated chassis design. This internal suspension dampens external vibrations and foot-traffic vibrations, protecting your music from skips and low-end feedback.
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Fully Automatic Convenience: Enjoy true one-touch playback. The tonearm automatically lifts, cues, and sets down at the start of the record, and safely returns to its rest at the end of the side. Manual cueing is also available via the silky-smooth damped cue lever.
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Illuminated Stroboscope & Pitch Control: Dial in the perfect rotation speed with the built-in glowing strobe light and a +/- 6% pitch control adjustment dial for both 33-1/3 and 45 RPM records.
Technical Specifications
| Component | Specification |
| Drive Type | Belt Drive (Precision Flat Belt) |
| Motor | Dual 8-Pole Synchronous |
| Speeds | 33-1/3 and 45 RPM |
| Pitch Control | +/- 6% adjustable variation |
| Platter | 304mm, 1.2kg, non-magnetic, dynamically balanced |
| Wow & Flutter | Less than 0.08% (DIN 45507) |
| Rumble (Signal-to-Noise) | Greater than 63 dB weighted |
| Cartridge Mount | Accepts standard 1/2-inch mount or Dual snap-in |
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