Sansui QRX-9001 Quad Receiver Professionally Serviced/Recapped – 1 Year Warranty

This Sansui QRX-9001 has been professionally restored, recapped, aligned, cleaned, and thoroughly tested by our restoration team.

All four amplifier channels and the conventional two-channel stereo mode have been tested for stable, clean performance.

Your purchase is supported by our after-sale technical assistance and included 1-year limited technical warranty for added peace of mind.

The Sansui QRX-9001 is more than a vintage receiver—it is a statement piece from the golden age of high-fidelity audio.

Designed as Sansui’s top-tier quadraphonic receiver, the QRX-9001 combines substantial amplifier power, advanced four-channel decoding, a beautifully illuminated analog display, direct-reading power meters, and the unmistakable character of classic Sansui engineering.

It delivers 60 watts per channel into 8 ohms with all four channels operating, or 120 watts per channel into 8 ohms when used as a conventional two-channel stereo receiver.

This makes the QRX-9001 suitable for both an authentic quadraphonic system and a powerful traditional stereo setup.

This particular unit has undergone an extensive electronic and cosmetic restoration intended to preserve its original Sansui sound while improving reliability, stability, and ease of everyday use.

• Sansui’s flagship QRX-series four-channel receiver
• 120 watts per channel in two-channel stereo mode
• 60 watts per channel with all four channels operating
• Sansui QS Vario-Matrix four-channel decoder
• QS, SQ, CD-4, and four-channel direct playback capability
• Synthesizes an expansive four-channel sound field from conventional stereo sources
• Dual illuminated direct-reading power meters
• Multiple phono, auxiliary, tape, and four-channel connections
• Brushed aluminum faceplate with classic Sansui styling
• Refinished walnut wood cabinet included
• Professionally restored, recapped, aligned, and tested

The QRX-9001 delivers the rich, authoritative, and highly musical presentation associated with Sansui’s premium receivers.

In stereo mode, it offers strong bass response, a natural midrange, smooth high frequencies, and excellent dynamic control.

Its substantial amplifier section makes it especially well suited for larger vintage loudspeakers and systems that benefit from strong power and control.

In four-channel mode, Sansui’s QS Vario-Matrix circuitry creates an immersive and spacious presentation with greater depth and a wider sense of scale.

Conventional two-channel recordings can also be synthesized into an expansive four-speaker sound field.

This Sansui QRX-9001 has received an extensive electronic restoration and final quality-control inspection.

• Electrolytic capacitors replaced with high-quality modern components throughout applicable power-supply, tone-control, and amplifier sections
• Power supply inspected and rebuilt as required for stable, low-noise operation
• Power-supply diodes, rectifiers, and filter capacitors serviced or replaced as required
• Driver boards serviced with replacement transistors and adjustment components where required
• Known age-related reliability points inspected and corrected
• Differential pairs checked and matched as required
• Bias current and DC offset carefully adjusted
• Switches, potentiometers, and push-button controls thoroughly cleaned and lubricated
• Dolby and four-channel decoding sections serviced and verified
• Tuner and audio sections checked and aligned for proper operation

• All four amplifier channels tested under load
• Two-channel stereo operation tested
• QS, SQ, CD-4, and four-channel operating modes checked
• Phono, auxiliary, and tape inputs tested
• Speaker outputs and rear-panel connections inspected
• Meters checked and recalibrated as necessary
• Illumination inspected for even and reliable operation
• Continuous three-hour burn-in test completed under load
• Final listening evaluation completed with clean, balanced output

This receiver is presented in excellent vintage cosmetic condition.

• Brushed aluminum front panel has been carefully cleaned and hand-polished
• Original lettering and control markings have been preserved
• Knobs, switches, meters, and illuminated display areas present very well
• Walnut wood cabinet has been refinished with HQaudios satin oil finish
• Rear RCA connectors have been cleaned and tightened
• Original-style feet and installation screws are included

As an authentic vintage component, minor age-appropriate marks or signs of previous use may remain.

Please review all product photos carefully, as the photos form an important part of the cosmetic condition description.

• Sansui QRX-9001 quadraphonic receiver
• Refinished walnut wood cabinet
• Installed original-style feet
• Installation screws and attached hardware shown in the product photos
• 1-year limited technical warranty
• After-sale technical support from HQaudios

Speakers, turntables, cassette decks, display equipment, and decorative accessories shown for demonstration purposes are not included unless specifically stated.

The substantial amplifier section makes the QRX-9001 an excellent match for many classic full-size loudspeakers.

• JBL 4333 and similar JBL studio monitor systems
• Sansui SP-5500 and other compatible Sansui speaker systems
• Tannoy Arden and similar high-efficiency vintage speakers
• Klipsch Cornwall, Forte, and other efficient Klipsch models
• Selected Altec Lansing systems
• Sansui SR-929 turntable for a premium period-correct source
• Sansui SC-5330 cassette deck for a coordinated 1970s system

Speaker compatibility depends on impedance, the number of connected speakers, room size, and listening level. Contact us if you need help planning a stereo or four-channel system.

Vintage quadraphonic receivers provide more operating options than conventional two-channel equipment.

After delivery, please contact HQaudios if you need assistance with:

• Front and rear speaker connections
• Two-channel stereo operation
• Four-channel operating modes
• Input selection
• Control settings
• Turntable or tape deck connections
• Basic setup and troubleshooting

Many apparent technical concerns are caused by an incorrect selector position, tape-monitor setting, speaker connection, or operating mode and can often be resolved quickly.

Have vintage audio equipment that you would like to trade toward one of our professionally serviced components?

We may consider selected receivers, integrated amplifiers, power amplifiers, speakers, turntables, cassette decks, and reel-to-reel machines.

Contact us with the brand, model, operating condition, cosmetic condition, and clear photos. Trade-in availability and value are determined individually.

HQaudios specializes in the inspection, servicing, and restoration of selected vintage audio equipment.

Our services may include:

• Receiver and amplifier restoration
• Capacitor replacement
• Power-supply repair
• Control cleaning
• Bias and DC offset adjustment
• Tuner inspection and alignment
• Speaker crossover restoration
• Driver inspection and repair
• Cassette deck servicing
• Reel-to-reel servicing

Contact HQaudios with the brand, model, and current condition of your equipment.

The Sansui QRX-9001 is a large and heavy vintage receiver. Proper packaging is essential to protect its faceplate, knobs, meters, walnut cabinet, and internal chassis during transportation.

• Protective wrapping around the receiver and wood cabinet
• High-density foam protection on all sides
• Reinforced faceplate and corner protection
• Additional internal support to restrict movement
• Heavy-duty double-wall outer carton
• Trackable and insured shipping
• Signature confirmation may be required because of the item’s value

International shipping may be available to selected destinations. International customers are responsible for applicable import duties, taxes, customs charges, and local delivery fees.

Packaging materials and carrier selection may vary depending on destination and availability. Safe transportation remains our highest priority.

Please verify the voltage shown on the receiver’s rear panel before purchase and before connecting the unit to electrical power.

This receiver includes a 1-year limited technical warranty beginning on the confirmed delivery date.

The warranty covers qualifying failures of internal electronic parts resulting from normal household use.

Warranty coverage does not include:

• Cosmetic wear
• Bulbs or normal consumable items unless specifically stated
• Shipping or accidental damage
• Misuse, abuse, or liquid exposure
• Operation using incorrect voltage
• Improper speaker connections
• Damage caused by connected equipment
• Unauthorized modification or repair
• Damage caused by opening or disassembling the receiver

The receiver must remain unaltered and must not be opened, disassembled, modified, or repaired by an unauthorized third party.

If a qualifying defect is confirmed, HQaudios will provide troubleshooting and warranty-service instructions.

Please contact HQaudios for free technical support before arranging a return whenever possible.

Many concerns involving speaker wiring, input selection, tape-monitor settings, or quadraphonic operating modes can be resolved remotely.

Returns are handled according to the return terms and policies displayed on our website.

Returned equipment must be received in the same condition in which it was delivered, with all included accessories and original packaging materials.

The receiver must not be opened, modified, disassembled, or repaired before return authorization. Returned equipment may be inspected before a final resolution is issued.

We strongly recommend recording a continuous video while opening and inspecting the package.

If shipping damage is discovered:

1. Stop unpacking and photograph the affected area.
2. Retain the receiver, shipping carton, foam, and all packaging materials.
3. Contact HQaudios immediately.
4. Provide clear photos and video of the package and product.

This documentation helps us work with the shipping carrier and resolve any claim as efficiently as possible.

The actual color and appearance of the receiver may differ slightly from the product photos because of room lighting, reflections, camera settings, screen calibration, and the device used to view this page.

Certain viewing angles may make small cosmetic marks appear more or less visible.

Please review all photos and the complete description carefully before purchasing. Contact us if you would like clarification or additional photos of a specific area.

Payment must be completed using one of the approved payment methods available through our website checkout.

Please verify that your billing and shipping information is complete and accurate before submitting payment.

Orders can only be shipped to the address provided during the completed checkout process unless another arrangement has been approved in writing.

We work hard to describe every item honestly, restore it carefully, test all major functions, package it securely, and support our customers after delivery.

Please read the complete product description and review all photos before purchasing.

Contact HQaudios before placing your order if any information appears unclear or if you need help confirming compatibility with your speakers, turntable, tape deck, or other equipment.

Thank you for considering this professionally restored Sansui QRX-9001.