Sansui QRX 9001 (1976-1978)

Market Value: $800-$2,000+ depending on condition and functionality
Collectibility Rating: 9/10

Name: Sansui QRX 9001
Brand: Sansui

Specifications

Feature	Specification
Year of Production	1976-1978
Power Specifications	120W per channel (8Ω, stereo), 40W per channel (8Ω, quad), 4-channel operation
Impedance	4-16Ω
Sensitivity	Unknown
Key Features	4-channel discrete quadraphonic decoding, Sansui QS Vario-Matrix circuit, built-in oscilloscope for channel alignment, dual power transformers, separate power supplies for front and rear channels, 4 phono inputs, wood cabinet

Historical Significance

Sansui's flagship quadraphonic receiver and one of the most advanced 4-channel receivers ever produced, representing the pinnacle of quad technology before the format declined

Sound Signature

Warm, detailed, and powerful with excellent channel separation, smooth highs, and robust bass response in both stereo and quad modes

Maintenance and Restoration Tips

Aging capacitors, failing power supply transistors, dirty switches and potentiometers, oscilloscope tube failure, complex circuitry requiring specialist repair