Pioneer SX780 Vintage Receiver

The Pioneer SX780 is a classic stereo receiver that blends performance, aesthetics, and durability, making it a beloved piece among audiophiles and collectors. With a sleek brushed aluminum faceplate, wooden side panels, and robust audio output, this receiver is built to provide exceptional sound quality and reliability.

Now, this Pioneer SX780 has been professionally serviced and restored by HQaudios to bring it back to its original glory, delivering the iconic Pioneer sound with modern reliability. The unit has undergone extensive repairs and upgrades, ensuring long-term performance and retaining its vintage appeal. Perfect for anyone looking to enhance their audio setup with a dependable, high-quality vintage receiver.

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: 151TOSH0009

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 been carefully serviced and refreshed to ensure stable operation, reliable performance, and a clean vintage presentation while preserving its original character.

1. Fully Serviced

• Brushed aluminum faceplate professionally cleaned and detailed
• Knobs, switches, and pushbuttons cleaned with professional contact solution
• All function selectors and speaker switches serviced to eliminate oxidation
• Tone controls (bass, treble, balance, loudness) tested for proper response
• Speaker terminals cleaned for secure and stable connection
• Headphone output tested for clear, balanced stereo signal
• RCA inputs cleaned to ensure stable signal integrity
• Internal chassis cleaned and dust removed
• Rear panel cleaned with original lettering preserved
• All 8V dial lamps replaced to restore proper illumination
• FM Stereo indicator lamp replaced for accurate stereo lock display

2. Electronic Inspection & Stability Check

• Power supply inspected for stable voltage delivery
• Output stage tested for proper channel balance
• DC offset measured and confirmed within safe operating range
• Heat-stressed solder joints inspected and reflowed where necessary
• Signal path tested for clean, distortion-free operation

3. Tuner Section

• FM/AM tuner fully aligned with a precision calibration tool for optimal reception
• FM stereo lock and mute threshold calibrated for high-quality decoding
• Gyro tuning mechanism cleaned and restrung for smooth tuning
• Dial pointer realigned, and dial tracking adjusted for precise tuning

4. Final Testing & QA

• The unit underwent a 2-hour continuous stress test to verify thermal stability, channel balance, and overall performance
• Sound output tested for clarity, balance, and low noise
• All inputs (phono, AUX, tape) tested for noise-free operation and accurate signal handling
• Listening tests performed across all inputs to ensure dynamic, distortion-free audio
• Passed HQaudios’ final quality assurance inspection

5. Result

The Pioneer SX-780 now delivers warm, balanced, and stable stereo performance with properly restored dial illumination and a fully functional FM stereo indicator. All controls operate smoothly and reliably, providing clean signal flow and dependable daily listening while preserving its classic vintage character and timeless Pioneer design.

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.