Quick answer
If your turntable system suffers from audible hum, background noise, or weak bass, a dedicated power supply upgrade like the Simaudio MOON 820S can restore clarity and dynamics by delivering cleaner, more stable power.
Why a power supply upgrade matters for turntables
Turntable motors and phono stages are sensitive to power-line noise and voltage fluctuations. A standard wall-wart or built-in supply often lacks the filtration and regulation needed for truly quiet operation. Upgrading to a high-quality external power supply can reduce mechanical hum from the motor and electrical noise in the signal path.
The Simaudio MOON 820S is designed specifically for this purpose. It uses dual custom toroidal transformers and advanced regulation to deliver exceptionally clean power. The result is a lower noise floor, tighter bass, and better separation between instruments.
What the MOON 820S does differently
The MOON 820S is not a universal power supply. It is engineered as an upgrade path for compatible Simaudio components. Its circuit layout, filtration, and regulation are optimized for high-end audio, meaning it can supply current cleanly even during dynamic peaks.
Because it is a large, dedicated unit, it isolates the sensitive audio circuitry from the rest of your system's power grid. This isolation is key to eliminating the noise that standard supplies cannot filter out.
Diagnose your turntable power issue
- Symptom: You hear a low hum or buzz from your speakers even when no music is playing. The sound may change when you touch the turntable chassis or tonearm.
- Likely cause: A ground loop or inadequate power supply filtration. The built-in supply is allowing line noise to enter the audio signal path. Check all ground connections first. If the hum persists, the power supply is the likely culprit.
- Corrective action: Replace the stock power supply with a dedicated upgrade like the Simaudio MOON 820S. Ensure your turntable or phono stage is compatible with the 820S before purchase. If your component is not compatible, consider a universal high-quality linear power supply instead.
- Stop or choose another option: If the hum disappears after tightening ground connections or using a cheater plug (safety permitting), you do not need a power supply upgrade. If your component is not compatible with the MOON 820S, look for a dedicated power supply from the same manufacturer or a high-quality aftermarket unit.
Product facts
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Simaudio MOON 820S Power Supply: The MOON 820S uses state-of-the-art, custom-built dual toroidal transformers and advanced circuit layout, filtration, and regulation. This design provides exceptionally clean, stable power that reduces noise and improves dynamic range in compatible turntable components.
Simaudio MOON 820S Power Supply
