Marantz 4430 Quadraphonic Receiver – Fully Restored & Recapped 1-Year Warranty

Specification:

• Condition: Excellent – Refurbished (professionally serviced, tested, and guaranteed)
• Model: 4430
• Brand: Marantz
• Protection Plan: 1 year warranty
• FREE SUPPORT: MUST BE UTILIZED BEFORE RETURN IS REQUESTED
• Type: Vintage Quadraphonic Receiver
• Pro packaged, insured and includes tracking.
• No Boxes, No accessories
• SKU: 5QJKE3968

Marantz 4430 is a true vintage masterpiece, offering both quadraphonic and stereo sound modes with the iconic Marantz design. This unit has been fully restored and recapped to ensure it performs like new and lasts for years to come. A must-have for vintage audio enthusiasts and collectors!

Faceplate: Black finish crafted with anodizing aluminum technology for durability and elegance.

🔧 Restoration Details:

• Fully Recapped: All capacitors replaced with high-quality components for enhanced reliability and sound quality.
• Tuner Alignment: AM/FM tuner calibrated for optimal performance and crystal-clear reception.
• Cleaned and Polished: The unit has been carefully cleaned inside and out, including deoxidizing all switches and controls for smooth operation.
• Thorough Testing: Professionally tested to ensure peak performance on all inputs and outputs.

📋 Key Features:

• Quadraphonic Mode: Enjoy immersive 4-channel sound.
• Stereo Mode: Switch to bridged stereo for up to 125 watts per channel.
• Inputs: Phono, aux, tape, and preamp for versatile connectivity.
• Tone Controls: Adjustable bass, treble, and midrange for precision sound customization.
• Classic Design: Features the signature Marantz blue backlight and brushed aluminum faceplate.

TESTING VIDEO

🎯 Click “Buy It Now” to own this rare Marantz 4430 Quadraphonic Receiver – fully restored to perfection!

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Technical Specifications:

• Tuning Range: FM, MW
• Power Output: 30W/ch (quad) | 125W/ch (stereo bridged)
• Frequency Response: 20Hz-20kHz
• THD: 0.15%
• Inputs: Phono 2.7mV, Line 180mV
• SNR: Phono 75dB, Line 80dB
• Speaker Impedance: 4Ω-16Ω
• Dimensions: 137 x 440 x 365mm
• Weight: 19.5kg
• Year: 1974

Customer Service: Once your item arrives, if you have questions about how your item functions or proper settings, please CONTACT US.  We are audiophiles as well and love to help out other audiophiles. If you wanna hear the sound of this one, please kindly search the code ”5QJKE3968” on HQaudios Youtube.

TRADE-IN PROGRAM

“If you have any vintage audio equipment (receivers, speakers, cassette, reel to reel…) & want to upgrade with the available serviced one, don’t hesitate to contact us for the best deal. You only need to pay for the difference”

Condition:

This receiver is in “Excellent” condition, displaying minor signs of use with a bright, clear dial. All knobs, feet, and the attached AM antenna and AC cord are present and intact. Although the manual is missing, it can be found online or we can provide a PDF upon request. Please inspect all photos thoroughly for the actual condition.

Service:

Upon inspection, the unit had scratchy controls, a dim dial, and some distortion in one channel. Therefore, it underwent servicing by our technician. Manufacturer used certain transistors in this model that are known to fail after 40 years, so all of these were replaced. This upgrade resolved the distortion issue. Additionally, several questionable capacitors were replaced. 

Testing:

After servicing, the receiver was tested on our bench and performed excellently, delivering a powerful, warm, distortion-free signal characteristic of analog receivers. All inputs, outputs, LED lights upgrade and features were confirmed operational, and the tuner spins smoothly. Additional testing was conducted, and we can provide specific feature information upon request. This is a remarkable find for the vintage audiophile.

Condition Disclosure:

This item exhibits minor wear consistent with light use, as shown in the provided photos. The listing includes exactly what is pictured; no accessories, test equipment, or media are included.

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