Kenwood KT-500 (1980–1982)

A tuner with precise tuning and a cult following among FM obsessives who care about that needle twitching just right.

Overview

The KT-500 is Kenwood's mid-tier FM/AM stereo tuner from the early '80s. It's solid and unshowy, with design touches that only show up after hours of use. The front panel is all business: a large analog dial, a tuning knob with just the right resistance, and a cluster of small meters that show what the signal is doing. No digital displays, no gimmicks.

It sits just below Kenwood's KT-7000 and KT-917 models. It shares design DNA with those flagships, particularly in the IF (intermediate frequency) stage and the metering system, but it trims fewer-RF-stage costs where it counts: fewer RF stages, a simpler filter setup, and no exotic pulse-count detection. What it keeps is the core Kenwood tuning approach - stability, clarity, and a lot of hands-on control for chasing weak signals. It suits a fringe reception area.

It sounds clean - not lush, not warm, but accurate. FM stereo separation is strong for its class, and the de-emphasis switch toggles between 50µs and 75µs, which helps with European or older American broadcasts. The audio output is buffered, so it won't load down the next stage in your chain, and the fixed/variable output options let you feed a preamp or go straight into power amps. It won't match a KT-917 for detail.

Specifications

Key Features

The Metering System That Tells the Truth

Most tuners from this era carry a "tuning eye" or a bouncing needle that's more for show than function. The KT-500 has three meters - signal strength, tuning center, and stereo lock - and they're calibrated and useful. You can read signal strength in dB increments if you know how to interpret the scale, and the tuning meter responds precisely. DXers (long-distance FM hunters) like it because it lets them optimize antenna positioning in real time. Unlike some tuners that fake stereo detection, the KT-500's indicator only lights when a real stereo pilot signal is present and stable.

Solid-State Simplicity Done Right

Inside, the KT-500 is not exotic, but it's well executed. It uses a single RF amplifier stage, not two like the higher-end 600T or 700T. That means slightly lower sensitivity, but also fewer failure points. The IF strip is conventional double-tuned, using LC filters rather than the ultra-narrow ceramic filters found in the KT-917. That makes it less of a DX monster, but more forgiving on marginal signals. The MPX (stereo decoder) stage is discrete, not integrated, which helps with channel separation and long-term reliability. It lacks the pulse-count FM detector of Kenwood's top models, but its quadrature detector is stable and quiet, especially after a recapping.

Build Quality You Can Feel

The KT-500 weighs 4.3 kg, which is substantial for a tuner of this size. The chassis is steel, the front panel is thick aluminum, and the tuning knob has a damped, mechanical feel. The RCA jacks are mounted directly to the board with metal strain relief, and the power supply is modest but well filtered. It was made in Japan, when even mid-tier gear got proper attention to layout, grounding, and shielding. No rattles, no flex, no cheap switches.

Historical Context

The KT-500 arrived in 1980, as FM broadcasting was peaking in Europe and North America. Stereo FM was the standard by then. Audiophiles were building separates systems again after the brief reign of the all-in-one receiver, and tuners were back in demand. Kenwood competed with Yamaha, Pioneer, Sony, and Sansui for serious listeners. The KT-500 wasn't the star of the lineup - that was the KT-917 or the FM-only 600T - but it was the workhorse. It filled the gap between entry-level tuners (like the KT-50) and the exotic, six-figure beasts that graced the covers of Audio Magazine.

At the time, the big differentiators were sensitivity, selectivity, and stereo decoding accuracy. Kenwood's top models led in all three, but the KT-500 offered 80% of the performance at half the price. It shared the industrial design of the rest of Kenwood's silver-face gear: clean lines, recessed meters, and a layout that put function over flair. It also supported the optional RC-500 remote, which was rare for a tuner at this level.

Collectibility & Value

The KT-500 isn't a unicorn, but it's not common either. Many stayed in service for decades because they worked too well to throw out. Today, clean, fully operational units sell for $150 - $250 on the secondary market, depending on condition and whether the meters are accurate. Units with cloudy or dim meters - a common issue as the internal LEDs age - drop to $100 or less. Fully recapped and aligned examples with verified sensitivity can command $300, especially with the RC-500 remote.

The biggest threat to longevity is the electrolytic capacitors. Like most gear from this era, the KT-500's power supply and audio coupling caps are now 40+ years old. When they go, you get hum, low output, or complete channel failure. The IF strip is also vulnerable. One forum repair note mentions IC2, an op-amp in the IF stage, as a known failure point that can kill both AM and FM bands. Replacing it with an NTE 703A or modern equivalent usually fixes it, but alignment afterward is recommended.

Before buying one, test the meters - they should respond smoothly and return to zero. Check for station drift (a sign of aging capacitors in the oscillator), and verify that stereo decoding locks cleanly. The tuning knob should turn without wobble, and the front panel shouldn't be scratched or oxidized. Silver-face Kenwood gear tends to hold up well, but UV exposure can fade the labels over time.

It's not a "must-have" like a KT-917, but for someone building a vintage system on a budget, the KT-500 is a sensible choice.

eBay Listings

Kenwood KT-500 Stereo Tuner Synthesizer

$59.40

Vintage Kenwood KT-500 Stereo AMFM Tuner Synthesizer KA-500

$69.95

As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.

Related Models

• Kenwood KR 3200 (1973-1975)
• Kenwood KR 3400 (1977-1979)
• Kenwood KR 4070 (1977-1979)
• Kenwood KR 4200 (1975-1977)
• Kenwood KR 4130 (1977-1979)
• Marantz 1515 (1976-1978)
• Marantz 4220 (1974-1976)
• Marantz 4230 (1974-1976)
• Marantz HD 440 (1976-1977)
• Pioneer SX 300 (1971-1972)