Marantz 4270 Quad Receiver

70W x2 Stereo / 25W x4 Quad – Serviced & Fully Tested – 1-Year Warranty

Professionally Serviced, Inspected & Fully Tested by HQaudios
Backed by Our 1-Year Warranty

About This Receiver

Offered here is a vintage Marantz 4270 Stereo 2 + Quadradial 4 AM/FM receiver. The 4270 can operate in two power configurations: approximately 70 watts per channel in 2-channel stereo BTL mode, or approximately 25 watts per channel in 4-channel quadraphonic mode into 8 ohms.

This unit also features the classic Marantz Gyro-Touch tuning wheel, blue illuminated dial, Dolby Noise Reduction, Vari-Matrix circuitry, AM/FM tuner, and phono input.

This unit has been inspected, cleaned, serviced, configured for U.S. operation, and fully tested by HQaudios prior to sale. This listing is for the actual Marantz 4270 shown in the photos.

Video Demo & Functional Test

A video demonstration of this exact Marantz 4270 is included with the listing so buyers can see and hear the actual unit operating before purchase.

The demonstration is intended to verify normal operation under real listening conditions.

Key Highlights

• Marantz 4270 Stereo / Quadraphonic Receiver
• Approx. 70 W x2 in 2-channel stereo BTL mode
• Approx. 25 W x4 in 4-channel quadraphonic mode
• Rated output into 8 ohms
• Approx. 0.3% THD
• Audio frequency response: 20 Hz–20 kHz
• Damping factor: greater than 45 at 8 ohms
• Gyro-Touch tuning wheel
• Blue illuminated tuning dial and meters
• Built-in Dolby Noise Reduction
• Vari-Matrix circuitry
• AM/FM tuner
• Phono input
• Configured by HQaudios for U.S. mains operation
• Professionally inspected, serviced, and fully tested by HQaudios
• Backed by our 1-Year Warranty

HQaudios Inspection, Service & Testing

Our technicians inspected and tested this unit prior to listing.

Functional checks and operating adjustments were performed as required during evaluation.

The receiver was subsequently tested under real operating and listening conditions to verify stable operation.

No specific component replacement, full recap, tuner alignment, board-level rebuild, or other component-level restoration is claimed unless separately documented in the service record for this unit.

Important Power Mode Note

Cosmetic Condition

This unit presents in clean vintage cosmetic condition with normal age-related wear.

Please review all listing photographs carefully for the exact condition of the faceplate, dial glass, knobs, controls, metal chassis cover, rear panel, terminals, and input/output jacks.

The photographs show the actual unit included in this sale and form an important part of the condition description.

Specifications

Note: CD-4 refers to the vintage discrete 4-channel audio format, not Compact Disc.

What’s Included

• Marantz 4270 receiver
• Metal chassis cover shown in the listing photos

Only items specifically shown in the photographs or listed above are included.

Suggested Pairing

The Marantz 4270 can be paired with a wide range of vintage speakers when impedance and power requirements are appropriate.

In stereo mode, its 70 W x2 output makes it suitable for many classic 8-ohm loudspeaker systems. In quad mode, system matching should account for the 25 W x4 output configuration.

Professional Packing & Shipping

Vintage receivers are heavy and delicate. This unit will be professionally prepared for shipment by HQaudios with protection focused on the faceplate, dial glass, Gyro-Touch tuning wheel, controls, chassis, and rear connections.

1-Year Warranty

This unit is backed by our 1-Year HQaudios Warranty, subject to the applicable warranty terms and exclusions.

If you experience an operational issue after delivery, please contact us so our team can assist with diagnosis and support.

HQaudios – Vintage Audio Restored with Care.