Pioneer SX5590 Vintage Receiver

The Pioneer SX5590 represents the pinnacle of vintage audio receivers, carefully custom-built by HQaudios. This model is an upgrade from the SX1250, offering superior performance, improved functionality, and a stunning aesthetic. Designed for audiophiles and collectors who value both classic sound and sleek, modernized looks, the SX5590 is the ideal choice for those looking for a high-quality audio experience paired with timeless craftsmanship.

Built to deliver 160 watts per channel, the Pioneer SX5590 combines legendary engineering with modern upgrades to ensure your sound system delivers unmatched power and clarity. Carefully restored and custom-designed by our technicians, this receiver brings a new level of performance while maintaining the vintage charm and authenticity of the Pioneer name.

• CONDITION: Excellent – Fully Restored and Custom Designed
• MODEL: Pioneer SX5590 (Custom by HQaudios)
• TYPE: 2-Channel Stereo Receiver
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• ACCESSORIES: Black Piano Wood case
• SKU: 15QJKE4169

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

• Type: Stereo receiver
• Release Year: 1976
• Power Output:
• 120 watts per channel into 8 ohms (both channels driven)
• 160 watts per channel into 4 ohms
• Total Harmonic Distortion (THD): 0.1% or less
• Frequency Response:
• 20 Hz – 20,000 Hz (±1 dB)
• Damping Factor: 50 (at 8 ohms)
• Signal-to-Noise Ratio: 95 dB (A-weighted)
• Tuning Range:
• AM: 530 – 1,710 kHz
• FM: 87.5 – 108 MHz
• FM Tuning Sensitivity: 1.8 µV (Mono), 2.5 µV (Stereo)
• Power Consumption: 530 watts
• Weight: 26.5 kg (58.5 lbs)

KEY FEATURE

• Power Output: 160 watts per channel into 8 ohms, ensuring excellent power and performance for demanding speakers.
  
• Aesthetic: Brushed aluminum faceplate and sleek black finish, with modernized aesthetics to match the legendary Pioneer SX5590 model.
  
• Tone Controls: Bass, mid, treble, balance, and loudness controls that are calibrated for precise sound reproduction and fine-tuning.
  
• Versatility: Includes Phono, AUX, Tape, and FM inputs, providing a wide range of connectivity options.
  
• Vintage Styling: Features retro VU meters for a classic touch, and metallic knobs that offer both aesthetic appeal and functional performance.
  
• Custom Upgrades: Tailored modifications by HQaudios, ensuring both reliability and an enhanced aesthetic appeal.

REFURBISHED

This Pioneer SX5590, upgraded from the original SX1250, has been meticulously restored by HQaudios to offer a seamless blend of vintage performance and modern enhancements. The receiver has been transformed to visually match the SX5590 while retaining the classic sound and feel that Pioneer enthusiasts love. This restoration ensures that it not only looks stunning but also delivers audio performance beyond its original specifications.

Every aspect of the receiver has been carefully serviced and upgraded, including the power handling, audio components, and aesthetics, ensuring it is as close to new as possible—if not better. From the bold black and silver finish to the upgraded internals, this unit offers the ultimate vintage audio experience with modern reliability.

1. Fully Serviced

• Brushed aluminum faceplate restored and polished to a mirror finish, providing a sleek, modern look while staying true to the Pioneer design.
• Laser-etched lettering ensures precision, clarity, and durability with painted accents that prevent fading, adding a sharp, long-lasting aesthetic to the receiver.
• Knobs, switches, and pushbuttons cleaned and lubricated with DeoxIT, ensuring smooth, responsive operation without any noise or resistance.
• Chassis cleaned internally and externally, ensuring the receiver looks immaculate on the inside and outside.
• RCA jacks and speaker terminals serviced, cleaned, and re-tensioned to guarantee optimal signal transfer and secure connections.
• Wood case included, carefully refinished with a premium black piano finish, giving the receiver an elegant, classic touch.
• Headphone output tested to ensure a balanced and distortion-free stereo output across all channels.
• The rear panel cleaned and detailed, with all lettering preserved and touched up where necessary.

2. Lighting System Replacement

• Full LED upgrade across the dial scale, meters, and indicator lamps, providing modern lighting with a Pioneer warm tone for a fresh, vibrant look.
• LEDs are long-life, low-heat, ensuring efficient operation and minimal heat buildup, guaranteeing reliability for years to come.
• The warm light tone has been enhanced to match the unit’s modern aesthetic, giving the receiver a contemporary upgrade while keeping its vintage appeal intact.

3. Recapped – Electrical Restoration

Using New-Old Stock (NOS) components ensures that this restoration retains the Pioneer character while delivering superior reliability and performance.

• Power Supply Board:
  • All electrolytic capacitors replaced with fresh, high-quality components to ensure long-lasting reliability.
  • Voltage rails stabilized under load for smooth, consistent operation.
  • Weak solder joints reflowed, and problematic components replaced for durability and improved functionality.
• Main Amplifier/Driver Boards:
  • Full recap with low-ESR capacitors to enhance signal integrity, minimize distortion, and provide a cleaner audio experience.
  • Bias and DC offset adjusted to factory specifications to ensure optimal sound reproduction.
  • Transistors tested and replaced with low-noise equivalents to guarantee consistent and reliable output.
  • Thermal stability confirmed after extensive testing, ensuring safe operation even under heavy loads.
• Preamplifier & Tone Board:
  • All electrolytic capacitors replaced for improved sound quality and efficiency.
  • Tone controls (bass, mid, treble, balance) fully restored, ensuring smooth, noise-free operation for precise audio control.
  • Pots and switches cleaned and lubricated to eliminate crackling, hiss, or channel imbalance, ensuring long-term use without interference.
• Phono Board:
  • Capacitors replaced to improve phono gain and RIAA accuracy, optimizing sound quality for turntable use.
  • Noise-free performance verified to provide clear, dynamic sound from vinyl sources.
• Tuner Section:
  • Key capacitors replaced to restore signal clarity and reception stability.
  • RF/IF alignment performed to ensure precise FM/AM tuning with minimal interference.

4. Final Testing & QA

• The unit underwent a 2-hour continuous stress test, verifying its thermal stability, channel balance, and overall performance.
• Frequency and voltage measurement equipment was used to ensure all parameters are restored to original factory specifications.
• Listening tests performed across all inputs to ensure dynamic, distortion-free audio.
• The unit passed HQaudios’ final quality assurance inspection, guaranteeing long-term performance and reliability.

5. Result

The Pioneer SX5590 now offers the legendary Pioneer sound with minimal distortion, clear clarity, and reliable operation. The brushed aluminum faceplate, combined with laser-etched lettering, provides a bold yet classic look that complements any high-end audio setup. This receiver delivers an iconic listening experience with optimal sound quality, ready for decades of enjoyment.

This SX5590—upgraded from the SX1250—is perfect for Pioneer collectors and audiophiles who seek a reliable, powerful, and aesthetically stunning receiver with a modern twist. With its full recap, precise restoration, and durable components, it’s an investment that will provide unmatched musical enjoyment 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.

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