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Harman Kardon 430 Vintage Stereo Receiver – 25 WPC, Twin Powered - Image 1
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Harman Kardon 430 Vintage Stereo Receiver – 25 WPC, Twin Powered
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Harman Kardon 430 Vintage Stereo Receiver – 25 WPC, Twin Powered - Image 4
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Harman Kardon

Harman Kardon 430 Vintage Stereo Receiver – 25 WPC, Twin Powered

$695.00

Out of stock

Other stereo receivers in stock now
Harman Kardon HK3700 Stereo Receiver – 85 WPC, Sub Out$345.00Harman Kardon HK3300 Stereo Receiver – 20 WPC$245.00Harman Kardon HK3250 Stereo Receiver – 40 WPC, High Current$245.00

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Other stereo receivers we have in stock now

3 in stock · $245.00–$345.00 · all ship

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Description

Harman Kardon 430 Twin Powered Vintage 25 WPC Stereo Receiver

This Harman Kardon 430 Twin Powered receiver represents one of vintage audio’s best-kept secrets and has undergone our very thorough Level Two service and testing which should ensure many more years of reliable performance ahead. Released in 1976 at the substantial price of $325 (equivalent to over $1,700 today), this remarkable receiver delivers 25 watts per channel through its revolutionary Twin Power design featuring completely separate power supplies for each channel.

The Twin Power architecture sets the 430 apart from every other receiver in its era, providing exceptional channel separation, superior dynamics, and the ability to drive demanding low-impedance speakers with authority that belies its modest wattage rating. This dual power supply configuration gives the 430 performance characteristics typically found only in much higher-powered separates, delivering outstanding clarity, detail, and musical involvement that has earned it legendary status among vintage audio enthusiasts.

The receiver features comprehensive connectivity including phono input with built-in preamp, auxiliary input, tape monitor, AM/FM tuner with signal strength meter, high and low frequency filters, defeatable loudness contour, and outputs for two sets of speakers. The elegant minimalist design showcases Harman Kardon’s philosophy of “promise less, deliver more” with clean lines, quality construction, and the distinctive green dial illumination that defines the era.

Specifications:

Power Output: 25 watts per channel into 8Ω (stereo)

Frequency Response: 20Hz to 20kHz

Total Harmonic Distortion: 0.3%

Signal-to-Noise Ratio: 65dB (line)

Damping Factor: 40

Speaker Load Impedance: 4Ω to 16Ω

Tuning Range: AM/FM stereo

Inputs: Phono, Auxiliary, Tape Monitor

Outputs: Two sets of speakers, headphone jack

Features: High/low filters, loudness contour, tape monitor

Cooling: Convection (fanless operation)

Dimensions: 17 x 5.5 x 14.5 inches (432 x 140 x 368 mm)
Weight: 24 lbs (10.9 kg)

This fully serviced Harman Kardon 430 is in exceptional vintage condition and offers the rare combination of vintage aesthetics, innovative engineering, and exceptional musical performance that has made it a coveted piece among discerning collectors and music lovers who understand that true quality transcends specifications.

Asking $695; buy with confidence and benefit from Radique’s “Bumper to Bumper” warranty and Perpetual trade back policy.

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Additional information
Weight26 lbs
Dimensions18.5 × 21 × 9.5 in
About brand
Harman Kardon at Radique
We service Harman Kardon, too. Bring us your own Harman Kardon receivers, amplifiers, cassette decks and CD players for repair, servicing or restoration (solid-state gear; we don't take in tube equipment), with a 90-day warranty on the work. See our Audio Service page

Harman Kardon began in New York in 1953, founded by Sidney Harman, who was born in Montreal, and Bernard Kardon. Harman Kardon calls its 1954 Festival D1000 the first hi-fi receiver. We carry Harman Kardon stereo receivers, AV receivers, integrated amplifiers, cassette decks and CD players. We've had more than 130 Harman Kardon listings so far. Every used Harman Kardon here is inspected, tested and serviced as required, then photographed in-house and covered by our Bumper-to-Bumper Warranty and Perpetual Trade-Back Program. Every AV receiver we list is tested input by input on our bench: each HDMI input and output, the analog, optical and coaxial inputs, the subwoofer outputs and the wireless features where it has them. Don't see the model you want? Tell us on First Dibs and we'll email you when one arrives.

The Harman Kardon story, 1953 to today

Sidney Harman and Bernard Kardon left the David Bogen Company, where Kardon was chief engineer, and founded Harman Kardon in New York in 1953. Harman was born in Montreal in 1918 and grew up in New York. Kardon retired in the 1950s.

Receivers first. Harman Kardon calls the Festival D1000 of 1954 the first hi-fi receiver and the Festival TA230 of 1958 the first stereo receiver. The Citation II tube power amplifier of 1959, designed by Stu Hegeman, sold as a kit or ready-built.

Cassette and the 1970s. Harman Kardon says its CAD-5 of 1970 was the first hi-fi cassette recorder with Dolby noise reduction. Its "Twin Powered" receivers of the 1970s, such as the 430 and 730, gave each channel its own power supply.

Owners. Sidney Harman sold the company to Beatrice Foods in the late 1970s, when he became US Deputy Secretary of Commerce. He formed Harman International in 1980 and bought Harman Kardon back in 1985. Samsung bought HARMAN in 2017, and Harman Kardon remains one of its brands.

Which Harman Kardon is which?

Tube era (1950s and 1960s): Festival receivers, and Citation kits and factory-built units such as the Citation I preamplifier and II amplifier.

1970s receivers: the 330 series, the Twin Powered 630, 930, 430 and 730, and the HK670.

1980s receivers: the "i" models such as the hk690i, advertised for its high current capability, and the 330i.

Citation separates: solid-state Citation amplifiers and preamplifiers from 1970 to the 1990s, including the Citation XX of the early 1980s.

Cassette decks: from the CAD-4 and CAD-5 to the 1980s decks numbered CD91 to CD491. Those "CD" models are cassette decks, not CD players; Harman Kardon CD players carry "HD" names.

AV receivers (late 1990s on) and later stereo: the AVR line, such as the AVR 3600, and stereo models such as the HK 3700 and HK 990.

Buying used Harman Kardon: what to check

Dial and meter lamps. Owners report dead or flickering lamps on 1970s receivers such as the 930, 430 and 330C; many are replaced with LEDs.

Capacitors. Expect a 1970s receiver that hasn't been recapped to need it.

Output stage. Owners report blown output transistors on the 730 and 430, often caused by a failed part nearby. Both channels should play cleanly at a realistic level.

Switches. Owners say the 1980s "i" receivers are prone to dirty switches that make channels cut out. Try every input and the balance control.

AV receivers. HDMI is usually the first thing to fail on a modern AV receiver. We test every HDMI input and output before listing.

Everything we list is inspected, tested and serviced as required here, and comes with our warranty.

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