Kenwood KD 500 (1976–1978)

Overview

The Kenwood KD-500 is big and heavy, and you notice it as soon as it comes out of the box. Kenwood built it between 1976 and 1978 as a direct challenge to the high-end turntables coming from Technics, Denon, and Sony. These were machines for audiophiles who wanted laboratory-grade speed stability and modular flexibility. Unlike most turntables in its class, the KD-500 shipped without a tonearm. The blank mounting board was made to accept a wide variety of aftermarket tonearms, so owners could fit their preferred arm. It was meant to be part of a system, not a standalone appliance.

The 3.5kg die-cast zinc platter is driven by a 24-pole, 30-slot brushless DC motor, which is isolated from the chassis by three rubber grommets. Speed stability is rated at 0.025% WRMS, a number that still impresses today. The stroboscope and lamp make visual verification easy. Reviewers note that there is no dust cover, and that remains a persistent quirk.

For all its technical rigor, the KD-500 isn't clinical. The 10mm acrylic base, layered over chipboard, makes a rigid but damped platform, and the compliant rubber feet help decouple the assembly from outside vibration. Reviewers consistently describe the sound as neutral and uncolored - "a platform that lets your cartridge and tonearm shine," as one put it. Add a signal-to-noise ratio of 78dB (DIN B), and it becomes a favorite among those who prioritize transparency over sonic character.

Specifications

Manufacturer	Kenwood
Model	KD-500
Type	direct-drive turntable
Years	1976–1978
Drive system	direct-drive
Platter	heavy, non-magnetic die-cast zinc alloy
Platter weight	3.5kg
Tonearm	supplied without a tonearm
Tonearm mounting	a 222mm diameter tonearm mounting board
Tonearm board material	a 10mm thick acrylic board
Speed	33 1/3 and 45 rpm
Speed adjustment	fine speed adjustment via a pitch control slider
Wow & Flutter	0.025% WRMS
Signal-to-Noise Ratio	78dB (DIN B)
Features	stroboscope with lamp, fine speed adjusting control, height adjustment and free stop action
Motor	24-pole, 30-slot, brushless DC type
Motor control	servo-controlled via a frequency generator (FG) and Hall-effect ICs
Motor assembly	isolated from the chassis by three rubber grommets
Construction	solid, non-resonant 10mm thick acrylic base
Plinth	two-layer sandwich of 10mm acrylic and 10mm chipboard
Feet	four large, compliant rubber feet
Color	ACRB
Country of manufacture	Japan

Key Features

3.5kg Die-Cast Zinc Platter

The 3.5kg platter gives the KD-500 plenty of rotational inertia, which smooths out speed fluctuations and resists external vibration. It is non-magnetic, so it doesn't interfere with cartridge coils. Once it is up to speed, there is no wobble and no chatter.

222mm Acrylic Tonearm Mounting Board

The missing factory tonearm wasn't a cost-cutting move. It was a design choice. The 10mm thickness adds rigidity and minimizes resonance transfer between arm and chassis. The final sound signature depends entirely on the arm and cartridge the owner picks.

24-Pole Brushless DC Motor with Grommet Isolation

At the center of the KD-500 is a 24-pole, 30-slot brushless DC motor, over-engineered by the standards of its time. It is servo-controlled through a frequency generator and Hall-effect ICs, which gives steady speed with minimal electrical noise. The whole motor assembly floats on three rubber grommets, so mechanical vibration doesn't reach the platter. That isolation is critical for the 0.025% WRMS wow and flutter spec, a number that rivals contemporary high-end models.

Two-Layer Acrylic and Chipboard Plinth

The plinth does sonic work as well as structural work. The base layer is a 10mm thick acrylic slab, chosen for its non-resonant properties. On top of that sits another 10mm of chipboard. The sandwich dampens internal reflections while keeping things rigid, and it avoids the ringing associated with all-metal or all-wood construction. It is a pragmatic solution that puts sonic neutrality ahead of looks.

Compliant Rubber Feet

The four large rubber feet isolate as well as stabilize. Their compliant rubber absorbs floor-borne vibration. Reviewers note they are not height-adjustable, which can make leveling on uneven surfaces awkward. Over time the feet can harden and crack, a known degradation point that often calls for replacement with modern equivalents. In good condition, they contribute significantly to the turntable's low noise floor.

Historical Context

The KD-500 arrived during a surge of high-quality, modular turntables from Japanese manufacturers in the late 1970s. Kenwood positioned it as an answer to elite models from Technics and Denon, aimed at audiophiles who valued precision and customization. It was the base model in a small line, and the KD-550 offered an upgraded quartz-locked speed control system. Both were built in Japan, with the era's direct-drive reliability and laboratory-grade specifications.

Collectibility & Value

The KD-500 has gained quiet respect among vintage turntable collectors, though it remains less celebrated than its Technics counterparts. Market prices vary widely. Units have been listed from $700 to $2,250, and a recent sale that included a JH Formula 4 tonearm closed at $375. Value depends heavily on condition and on whether an arm is included. Known issues include rubber feet that harden with age, and a motor control board that relies on electrolytic capacitors, which may need replacement after decades. The main bearing also needs periodic cleaning and re-lubrication to keep performing well. It isn't as common as other Japanese turntables, but it isn't exceptionally rare either.

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