Sansui QRX-8001 Vintage Quadraphonic Receiver – Professionally Restored – 1-Year Warranty

Sansui QRX-8001 Vintage Quadraphonic Receiver – Professionally Restored – 1-Year Warranty

Condition: Tested, serviced and restored – Excellent working condition. With over 2,000 fully serviced and certified vintage receivers, amplifiers, tape decks, and speakers delivered, HQAudios stands as one of the most reputable sources for professionally restored vintage audio equipment. Please scroll down to view the complete description.

1/ ABOUT

This listing is for a Sansui QRX-8001 vintage quadraphonic receiver, professionally inspected, serviced, and tested by HQaudios.

This unit has been prepared for reliable daily use while preserving the warm, musical vintage sound that makes classic Sansui receivers highly desirable among collectors and audiophiles.

The receiver has been fully tested under real listening conditions and is ready to be enjoyed with your favorite speakers, turntable, tape deck, or other compatible audio sources.

2/ KEY HIGHLIGHTS

• Professionally inspected and serviced by HQAudios technicians.
• Fully tested for clean, stable, and reliable operation.
• Legendary Sansui four-channel receiver with QS/SQ quadraphonic decoding.
• Powerful four-channel amplifier design.
• All major functions tested before shipment.
• Controls cleaned and treated for smooth operation.
• Carefully packed for safe worldwide delivery.
• Backed by our 1-Year HQAudios Warranty.

3/ SPECIFICATIONS

• Brand: Sansui
• Model: QRX-8001
• Type: Vintage Quadraphonic Receiver
• Power Output: 40 Watts per channel × 4 into 8 ohms; 100 Watts per channel × 2 into 8 ohms in 2-Channel Power ×2 mode
• Inputs: Phono, Aux, Tape Play
• Built-In Tuner: AM/FM
• Dimensions: Approx. 23.6 × 6.9 × 16.3 inches (W × H × D)
• Weight: Approx. 52.0 lbs (23.6 kg)
• Condition: Restored / Serviced / Tested
• Warranty: 1-Year HQAudios Warranty

4/ SOUND CHARACTER

The Sansui QRX-8001 delivers the unmistakable Sansui sound with exceptional warmth, authority, and impressive spatial presentation. Its rich midrange, smooth extended highs, and deep, controlled bass create an engaging listening experience that excels in both conventional stereo and immersive quadraphonic playback.

The advanced QS and SQ decoding system reproduces four-channel recordings with remarkable realism, while the powerful amplifier section maintains excellent channel separation, dynamic headroom, and precise imaging. Whether paired with vintage Sansui speakers or modern high-efficiency loudspeakers, the QRX-8001 offers an expansive, highly musical presentation that remains one of the finest examples of vintage quadraphonic audio engineering.

5/ COSMETIC CONDITION

The receiver is in excellent vintage cosmetic condition with only light signs of age consistent with careful ownership. The brushed aluminum faceplate, original knobs, switches, and illuminated dial have been professionally cleaned and detailed while preserving the receiver's authentic vintage appearance. Please review all photos carefully, as they are part of the description.

• Faceplate: Excellent condition with clean brushed aluminum finish and crisp original lettering.
• Knobs and switches: Original Sansui controls in excellent condition with smooth, precise operation.
• Cabinet / case: Well-preserved cabinet with minimal signs of normal vintage use.
• Dial glass / meter / lamps: Clean dial glass with bright illumination and fully functional meters.
• Rear panel: Clean, complete, and well maintained with all input/output connectors and speaker terminals in excellent condition.

6/ HQAUDIOS RESTORATION & TESTING PROCESS

Before Restoration

• After decades of service, the Sansui QRX-8001's power supply, four-channel amplifier section, FM/AM tuner, QS/SQ/CD-4 quadraphonic decoding circuitry, preamplifier circuits, input selector, volume and tone controls, switches, relays, and illuminated dial system require careful inspection before restoration begins.

• For this QRX-8001, HQaudios places particular attention on the condition of the power supply, four-channel output stage, protection circuit, quadraphonic decoder boards, tuner section, controls, switches, potentiometers, speaker terminals, RCA input/output connections, and internal wiring. These components are critical to long-term reliability, channel balance, and authentic quadraphonic performance.

• The amplifier circuits, tuner alignment, QS/SQ decoding circuits, signal path, dial illumination, meters, and front-panel controls are also carefully evaluated to determine the receiver's overall operating condition before restoration starts.

During Restoration

• Based on the inspection results, this QRX-8001 was restored according to HQaudios' technical standards while preserving the engineering and performance characteristics that have made this model one of Sansui's most respected quadraphonic receivers.

• The power amplifier and preamplifier sections were professionally cleaned and serviced. Controls, switches, relays, and connectors were carefully cleaned to eliminate noise and ensure smooth operation.

• The power supply, amplifier circuits, protection circuitry, and signal path were inspected and serviced as documented during restoration. Selected transistors and resistors within the signal path were also replaced to improve long-term reliability, reduce noise, and maintain the receiver's original operating characteristics.

• FM/AM tuner performance, QS/SQ quadraphonic decoding, channel balance, input selection, speaker outputs, tone controls, protection circuitry, and all front-panel functions were tested and calibrated to restore dependable operation.

• After the technical restoration was completed, the exterior was professionally cleaned and detailed to preserve the QRX-8001's original appearance while respecting the authentic character of vintage Sansui equipment.

After Restoration

• Once restoration had been completed, this QRX-8001 underwent comprehensive functional testing under real operating conditions.

• Amplifier performance, quadraphonic decoding, tuner reception, channel balance, output power, protection circuitry, meter response, dial illumination, and all audio inputs and outputs were thoroughly tested to ensure the receiver performed as originally designed.

• Finally, the unit underwent several hours of continuous listening tests through a complete vintage quadraphonic audio system to evaluate sound quality, operational stability, four-channel imaging, and overall real-world performance.

• Only after successfully meeting HQaudios' restoration and testing standards was the Sansui QRX-8001 approved and prepared for its next owner.

7/ VIDEO TEST & SOUND DEMO

Please contact us directly if you would like to hear a video test of this unit before purchase.

We are happy to provide additional video, sound demo, or photos upon request.

8/ SUGGESTED PAIRING

The Sansui QRX-8001 works beautifully with a wide range of restored vintage quadraphonic systems.

Classic Sansui Quadraphonic System
Sansui SR-838 Turntable
Sansui SP-5500X Speakers (Front)
Sansui SP-3500 Speakers (Rear)

Sansui Tape System
Sansui SC-3110 Cassette Deck
Yamaha NS-1000M Speakers

Quadraphonic Analog System
Pioneer RT-909 Reel-to-Reel Tape Deck
JBL L112 Speakers

West Coast Monitor System
TEAC X-1000R Reel-to-Reel Tape Deck
JBL 4312 Control Monitors

High-End Vintage System
McIntosh C28 Preamplifier
Altec Model 19 Speakers

British-Style System
Thorens TD-160 Turntable
Tannoy Berkeley Speakers

For the best result, connect the QRX-8001 to properly matched speakers using quality speaker cable and pair it with well-maintained vintage source components for optimum performance.

9/ COMBO DISCOUNT

Save $100 when purchasing this receiver together with a qualifying pair of speakers or another restored vintage audio component from HQAudios.

Please contact us before purchase so we can confirm availability and prepare a combined offer.

10/ TRADE-IN PROGRAM

If you have vintage audio equipment such as receivers, amplifiers, speakers, cassette decks, or reel-to-reel tape decks and would like to upgrade to a restored unit, please contact us.

HQAudios may accept trade-ins toward your purchase depending on the item, condition, and shipping location.

11/ SHIPPING & PACKAGING

This receiver will be professionally packed by HQAudios for safe delivery. Vintage receivers are heavy and delicate, so we take extra care to protect the faceplate, knobs, corners, rear terminals, and internal structure during shipment.

• Carefully wrapped and protected.
• Heavy-duty box and protective packing materials used.
• Extra protection around faceplate, knobs, and corners.
• Tracking provided after shipment.
• Signature may be required for delivery.

12/ 1-YEAR HQAUDIOS WARRANTY

This unit is backed by our 1-Year HQAudios Warranty covering normal-use functionality related to the service work performed by HQAudios.

If you experience an issue, please contact us first. We are committed to helping our customers and will work with you to resolve the problem in a fair and reasonable way.

The warranty does not cover misuse, improper setup, unauthorized repair, shipping damage caused after delivery, cosmetic wear, or damage from incompatible equipment.

13/ CUSTOMER SERVICE

Once your item arrives, if you have questions about setup, speaker connection, turntable connection, switch settings, or general operation, please contact us.

We are happy to help you get the best performance from your vintage audio system.

14/ IMPORTANT NOTE FOR VINTAGE AUDIO BUYERS

This is a vintage audio component, and minor cosmetic signs of age should be expected.

We do our best to describe and photograph each item accurately. Please review all photos and ask any questions before purchase.

Your satisfaction is important to us. Please contact us first if you need assistance after delivery.

Thank you for choosing HQAudios – Restored Vintage Audio You Can Trust.