Pioneer QX-747
Pioneer
QX-747
- Condition
- Mint
- Type
- Integrated
Ships to you
Posted with tracking, and shipping is included — the price you see is the price you pay. This one takes up to seven days to go out, and you'll get the tracking the moment it does.
Description
PIONEER QX-747 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 PIONEER QX-747 vintage quadraphonic receiver, professionally inspected, serviced, and tested by HQaudios. The QX-747 is one of Pioneer’s most respected quadraphonic receivers from the golden age of hi-fi, combining robust amplifier performance, sophisticated four-channel decoding, and classic brushed aluminum styling. Carefully restored for dependable long-term operation, this receiver delivers the rich analog sound and immersive listening experience that continue to make it a favorite among vintage audio enthusiasts and collectors. The receiver has been fully tested under real listening conditions and is ready to be enjoyed in both stereo and quadraphonic systems 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 Classic four-channel quadraphonic receiver Built-in CD-4, SQ, Regular Matrix, and discrete 4-channel capability Controls cleaned and treated for smooth, noise-free operation Carefully packed for safe worldwide delivery Backed by our 1-Year HQaudios Warranty 3/ SPECIFICATIONS Brand: Pioneer Model: QX-747 Type: Vintage Quadraphonic Stereo Receiver Power Output: 20 Watts per channel × 4 @ 8Ω, 40 Watts per channel × 2 @ 8Ω (Stereo) Frequency Response: 10Hz – 25kHz Quadraphonic Formats: CD-4, SQ, RM (Regular Matrix), Discrete 4-Channel Inputs: Phono, AUX, Tape, and Discrete 4-Channel Inputs Speaker Load: 4Ω – 16Ω Signal-to-Noise Ratio: 70dB (MM), 90dB (Line) Total Harmonic Distortion: 0.5% Dimensions: Approx. 21.7 × 6.3 × 16.5 in (550 × 160 × 420 mm, W × H × D) Weight: 42.1 lbs Condition: Restored / Serviced / Tested Warranty: 1-Year HQaudios Warranty 4/ SOUND CHARACTER The Pioneer QX-747 delivers the smooth, dynamic, and engaging sound that made Pioneer receivers famous throughout the 1970s. In conventional stereo mode, it produces warm vocals, detailed midrange reproduction, crisp yet non-fatiguing highs, and solid, well-controlled bass with excellent musical balance. When used in quadraphonic mode, the QX-747 creates a remarkably spacious and immersive soundstage with convincing four-channel imaging and outstanding ambience retrieval. Whether paired with vintage quad recordings or used as a premium stereo receiver, it offers the classic analog character, reliability, and craftsmanship that continue to make Pioneer quadraphonic receivers highly collectible. 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, tuning dial, knobs, and original controls 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 Pioneer controls in excellent condition with smooth, precise operation Cabinet / case: Well preserved with minimal signs of normal vintage use Dial glass / meters / illumination: Bright, clear, and fully functional Rear panel: Clean, complete, and well maintained with all input, output, and speaker terminals in excellent condition 6/ HQAUDIOS RESTORATION & TESTING PROCESS Before Restoration After decades of service, the Pioneer QX-747's power supply, four-channel amplifier section, FM/AM tuner, preamplifier circuits, quadraphonic decoder, input selector, volume and tone controls, switches, relays, and illuminated dial system require careful inspection before restoration begins. For this QX-747, HQaudios paid particular attention to the condition of the power supply, output stage, protection circuit, tuner section, quadraphonic decoder, controls, switches, potentiometers, speaker terminals, RCA connections, and internal wiring. The amplifier circuits, tuner alignment, signal path, quadraphonic decoding circuits, dial illumination, and front-panel controls were also carefully evaluated to determine the receiver's overall operating condition before restoration began. During Restoration Based on the inspection results, this QX-747 was restored according to HQaudios' technical standards while preserving its original engineering and performance characteristics. The power supply, four-channel amplifier section, and signal path were cleaned, inspected, serviced, and adjusted to restore stable and reliable performance. Controls, switches, relays, and connectors were carefully cleaned to eliminate noise and ensure smooth operation. FM/AM tuner performance and applicable quadraphonic functions were checked and adjusted, while channel balance, input selection, speaker outputs, tone controls, and front-panel functions were tested for dependable operation. The power supply, signal path, and internal circuit boards were inspected for reliable operation. Components that no longer met technical specifications were replaced based on the condition of this unit, while critical solder joints were inspected and reinforced to improve operational stability. After the technical restoration is complete, the exterior is professionally cleaned and detailed to preserve the QX-747's original appearance while respecting the authentic character of vintage Pioneer equipment. After Restoration Once restoration was completed, this QX-747 underwent comprehensive functional testing under real operating conditions. Amplifier performance, tuner reception, quadraphonic decoding, channel balance, output power, protection circuitry, dial illumination, and all audio inputs and outputs were thoroughly tested to verify proper operation. Finally, the unit underwent several hours of continuous listening tests through a complete vintage audio system to evaluate sound quality, operational stability, and overall real-world performance. Only after successfully meeting HQaudios' restoration and testing standards was this Pioneer QX-747 approved and prepared for its next owner. 7/ VIDEO TEST & SOUND DEMO We are happy to provide additional video, sound demo, or photos upon request. 8/ SUGGESTED PAIRING The Pioneer QX-747 works beautifully with a wide range of restored vintage systems. Classic Pioneer Quad System Pioneer PL-530 Turntable Pioneer CS-99A Speakers Quadraphonic Tape System Pioneer RT-707 Reel-to-Reel Tape Deck JBL 4311 Control Monitors Studio Monitor System Pioneer CT-F900 Cassette Deck JBL 4333A Studio Monitors British-Style System Thorens TD-160 Turntable Tannoy Berkeley Speakers For the best result, connect the QX-747 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. 10/ TRADE-IN PROGRAM 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. 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 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. Thank you for choosing HQAudios – Restored Vintage Audio You Can Trust
Condition notes
Excellent
Seller
Westlake Village, CA
★ 5.00
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