Pioneer SX 838 (1974-1976)
Specifications
| Feature | Specification |
| Year of Production | 1974-1976 |
| Power Specifications | 50 watts per channel (8Ω, 20Hz-20kHz, 0.5% THD) |
| Impedance | 4-16Ω |
| Sensitivity | Unknown |
| Key Features | Dual power supply, FET front end, 5-gang tuning capacitor, phono stage with low-noise transistors, dual power meters, walnut veneer cabinet |
Historical Significance
Mid-range model in Pioneer's acclaimed silver-face receiver series, representing the peak of 1970s analog receiver technology before the digital era
Sound Signature
Warm, detailed sound with excellent bass control, smooth midrange, and clean highs. Known for its musicality and power reserve
Maintenance and Restoration Tips
Aging capacitors, dirty controls and switches, bulb replacement for dial lights, potential DC offset adjustment needed
Collectibility and Market Value
- Market Value: $300-$600 depending on condition and restoration status
- Collectibility Rating: 7/10
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Service Manuals & Schematics
- Service Manual — archive.org
Related Models
- Pioneer CS-811 (1979)
- Pioneer KH-3500 (1979)
- Pioneer CS-53 (1978)
- Pioneer CS-545 (1979)
- Pioneer CS-66 (1979)
- Akai AM-2850 (1975)
- Akai AP-206 (1975)
- Nakamichi BX-1 (1985)
- Acoustic Research research-ar-17 (1978)
- Acoustic Research AR-19 (1994)