Rare Pioneer SX780 Vintage Receiver – Fully Serviced & Carefully Restored – 1-Year WRT

Pioneer SX780 Vintage Receiver – Fully Serviced & Carefully Restored – 1-Yr WRT

ABOUT

The Pioneer SX780 is a classic stereo receiver that blends performance, aesthetics, and durability, making it a beloved piece among audiophiles and collectors.

Originally known for its clean Pioneer sound and solid engineering, this unit has now been custom re-crafted with a bold black faceplate, giving it a powerful, modern-vintage presence.

This receiver features a precision anodized black aluminum faceplate, professionally finished and laser-engraved with sharp, high-contrast markings that enhance both readability and visual impact. The transformation preserves the original layout while elevating the overall look to a more aggressive and distinctive design.

Beyond the exterior, this Pioneer SX-780 has been professionally serviced and restored by HQaudios, ensuring stable operation, reliable performance, and long-term durability. All critical systems have been carefully inspected, serviced, and tested so the receiver delivers the iconic Pioneer sound with renewed confidence. This is an excellent choice for anyone seeking a fully serviced vintage receiver with a striking custom black finish, combining classic audio performance with a refined, modern aesthetic.

• CONDITION: Excellent – Serviced, tested, and cleaned
• MODEL: Pioneer SX780
• TYPE: 2-Channel Stereo Receiver
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• SKU: 15JKE4389

Customer Service:

Once your item arrives, if you have questions about how your item functions or proper settings, please CONTACT US.

TRADE-IN PROGRAM

“If you have any vintage audios (receivers, speakers, cassette, reel to reel...) & want to upgrade with the serviced one, don't hesitate to contact us for the best deal. You only need to pay for the difference between yours & mine....”

Note:

The actual color of the product may sometimes differ slightly from the photos due to lighting conditions, temperature, and the device used. Some angles in the photos may not fully reflect the product’s condition. Please read the description carefully and feel free to message us if you have any questions

SPECS

• Tuning range: FM, MW
• Power output: 45 watts per channel into 8Ω (stereo)
• Frequency response: 5Hz to 80kHz
• Total harmonic distortion: 0.05%
• Damping factor: 30
• Input sensitivity: 2.5mV (MM), 150mV (line)
• Signal to noise ratio: 76dB (MM), 95dB (line)
• Output: 150mV (line)
• Speaker load impedance: 4Ω (minimum)
• Semiconductors: 5 x FWT, 11 x IC, 26 x transistors, 22 x diodes
• Dimensions: 18.9 x 5.51 x 12.6 inches
• Weight: 24.69 lbs

KEY FEATURES

• Power Output: 45 watts per channel into 8 ohms
• Aesthetic Design: Classic brushed aluminum faceplate with sleek wood side panels
• Tone Controls: Bass, Treble, Balance, Loudness for precise sound customization
• Tuning: Clear, reliable AM/FM stereo tuning with signal strength meters
• Connectivity: Phono, Tape, and AUX inputs for versatile usage
• Durability: Heavy-duty construction designed to last
• Speaker Options: A and B speaker connections for flexible setup

REFURBISHED

This Pioneer SX-780 has undergone a comprehensive restoration to ensure peak performance while maintaining the signature Pioneer sound—now paired with a striking custom black aesthetic. The receiver has been fully serviced, carefully tested, and upgraded to deliver reliable long-term performance, combined with a powerful, modern-vintage appearance.

1. Fully Serviced & Cosmetic Recrafting

• Custom black anodized aluminum faceplate, professionally finished for durability and a deep, uniform tone
• Precision laser-engraved markings, sharp and clean for excellent readability and a premium look
• Knobs, switches, and pushbuttons cleaned and lubricated for smooth, precise operation
• Tone controls (bass, treble, balance, loudness) tested and calibrated to factory specifications
• Speaker terminals cleaned and re-tensioned for a secure, stable connection
• Headphone output tested for full, clear stereo performance
• RCA inputs cleaned and re-tensioned to ensure optimal signal integrity
• Internal chassis fully cleaned, dusted, and detailed
• Rear panel cleaned with all labeling preserved or carefully refreshed

2. Electronic Restoration

• Capacitors replaced across the power supply, preamplifier, tone control, phono stage, and power amplifier sections
• Power rails tested and regulated to ensure stable, reliable output
• DC offset and bias recalibrated to original factory specifications
• Transistors tested and replaced where necessary with low-noise, high-reliability equivalents
• Solder joints reflowed in heat-sensitive areas to improve long-term stability
• Cabinet refinished to complement the bold black faceplate design

3. Tuner Section

• FM/AM tuner fully aligned using precision calibration equipment for optimal reception
• FM stereo lock and mute threshold accurately set for clean decoding
• Gyro-tuning mechanism cleaned and adjusted for smooth, precise tuning
• Dial pointer realigned and dial tracking corrected for accurate frequency indication

4. Final Testing & Quality Assurance

• Completed a 2-hour continuous stress test to verify thermal stability, channel balance, and overall performance
• Audio output tested for clarity, balance, and ultra-low noise floor
• All inputs (phono, AUX, tape) tested for clean, distortion-free signal handling
• Extended listening tests performed across all inputs
• Passed HQaudios’ final quality assurance inspection

5. Result

The Pioneer SX-780 now delivers warm, dynamic sound with excellent clarity and dead-quiet operation, paired with a bold black anodized faceplate and razor-sharp laser engraving that gives it a commanding visual presence. This receiver combines classic Pioneer performance with a refined, aggressive custom look—ready to serve as a centerpiece in any serious vintage audio system for years to come.

SUGGESTED PAIRINGS

Speakers: JBL L100, Klipsch Forte, Pioneer HPM-100

Turntables: Technics SL-1200, Marantz 6100, Dual 1229

Cassette Decks: Pioneer CT-F900, TEAC A-450

🎁 Unlock an instant $100 voucher with every combo purchase.

PACKAGING & SHIPPING:

Secure Packaging:
Each unit is carefully packed using:

• High-density foam inserts with 5-layer corrugated cartons
• Custom EPE foam corners to protect edges
• Double-wall outer box for shock resistance
• Plastic straps + handling labels to ensure safe transit

Shipping Details:

• Dispatch Time: Ships within 3 business days
• Carrier: UPS Ground (tracked & insured)
• Signature Required: Yes (as buyer’s request)
• Transit Time: Typically 3–7 business days (USA)

International Shipping:
We offer global delivery through the eBay International Shipping Program. eBay handles customs, duties, and tracking.

📦 Note: Packaging may vary slightly depending on unit size or model, but safety and protection are always our top priority.

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Thank you for viewing our listing! Please kindly ensure you read all the provided information carefully!

We strive to describe all items honestly and accurately. However, as human beings, we may occasionally make mistakes. If you have any doubts or encounter conflicting information, please inquire before purchasing or making an offer

We kindly request that all buyers give us the opportunity to address any issues.

Payment Policy:

All buyers are required to make immediate payment or contact us within 24 hours to arrange payment, with payment received within 3 days. Offers submitted under the Best Offer feature are considered binding agreements and require immediate payment upon acceptance. Failure to adhere to these terms may result in substitution or cancellation of the transaction.

Payments must be accompanied by a valid shipping address listed as Confirmed. Payments with invalid shipping addresses will be refunded and may incur a processing fee deducted from the refund amount.

Shipping Policy:

This is for local pickup or we will ship it very carefully so that it arrives in good shape like it is now. Our customers' satisfaction means everything to us. Once you get this item, feel free to contact us if it has any problems! I will try to answer any questions that you may have in a timely fashion.

All shipments are processed within 03 business days of payment, whenever possible. In the event of stock issues causing a delay, customers will be promptly notified, and alternative shipment arrangements will be made. Customers are responsible for any charges incurred due to failed delivery attempts or re-delivery.

Return Policy:

Our Free Support service must be utilized before requesting any return, for any reason.

Items may be exchanged within 30 days if defective or not as described, with a full refund of the purchase price if an exchange is unavailable.

If due to seller error, we will issue a prepaid return label or arrange for reimbursement of return shipping expenses as per this policy, not exceeding the original shipping cost.

The address for returning shipment: 10851 Capital Ave, Garden Grove CA 92843

Returned items may require inspection before determining fault. The item must be received in its original, unaltered condition with all original packaging. Electronic items cannot be opened or tampered with; sealed items must remain sealed, and "Mint" items must remain in "Mint" condition.

No returns will be accepted without first contacting us for Free Support, troubleshooting, or evaluation.

Warranty policy:

The warranty covers technical parts for up to 12 months from the date of receipt, provided there is valid evidence and the item remains sealed, unaltered, and has not been disassembled or internally inspected/repaired. Please note that shipping costs for warranty service will be the seller's responsibility if the item is found to be defective.

⚠ Important Notice:

To ensure a smooth warranty process, we kindly request that you record a video while unboxing your package upon delivery. Any claims related to product damage or warranty service must be supported by clear video and photographic evidence. Please submit all required documentation to the official HQaudios email for prompt assistance.

***Failure to provide sufficient information as per our guidelines may result in the rejection of your request.

If you have any issues or dissatisfaction with our services, products, or policies, please refrain from leaving negative feedback immediately. Instead, contact us right away so we can provide you with the best possible solution and have the opportunity to improve our service quality!

Thank you for being a valued customer & Thanks for looking!