Teac A-500 (1978–1980)

A two-head, belt-driven cassette deck from Teac's late-'70s line. It survives mostly as a service manual, a handful of belts, and a warning about its confusingly similar namesake.

Overview

The A-500 is a single cassette tape deck built by Teac in Japan between 1978 and 1980, sold at a launch price of roughly 1,400 DM in 1978. That's about all the written record agrees on. The research page is blunt about it: "Little is documented about the Teac A-500," and no model-specific history has surfaced. What survives is a parts-and-service trail rather than a marketing trail - a 57-page English service manual with circuit diagrams, a shared service manual covering the A-500 and A-510, and a steady trickle of spare parts listings for belts, knobs, and pinch rollers.

The deck is a two-head, belt-driven, single-capstan machine. Two heads means record and playback share one head element, with a separate erase head. You can't monitor off the tape while recording the way a three-head deck allows. The listings describe Permalloy heads, which was the standard high-permeability alloy for consumer decks of the period - good output, reasonable wear, and it responds well to regular demagnetizing. The transport is full-logic rather than mechanical piano-key, and the one surviving listing that describes it calls the transport controls "very smooth." That's a seller's claim, not a reviewer's.

Tape handling covers the three common formulations of the era: normal, chrome, and ferro-chrome, with manual tape type selection and a separate manual equalization switch. There's a mechanical three-digit tape counter with memory stop. The DIN line input is rated at 30 mV into 10 kΩ. No output level, frequency response, distortion, signal-to-noise, wow-and-flutter, or motor type figures have surfaced for this deck. The one dimension fragment in the record ("Dimensions w18") is incomplete with no unit stated, so it isn't worth repeating as a spec.

One warning up front. A fair amount of online discussion tagged "A-500" is actually about the A-500i, a differently-suffixed Teac integrated amplifier. It's a completely different product that happens to share a number. Anyone searching for this deck will run into that confusion within the first page of results.

Key Features

Two-Head Permalloy Transport

The A-500 uses a two-head arrangement - one combined record/playback head plus an erase head - with Permalloy as the head material. Permalloy, a nickel-iron alloy, was the workhorse head material for consumer cassette decks in the late '70s: high permeability, decent high-frequency response, and reasonably durable provided the owner kept up with demagnetizing. The tradeoff of a two-head design is that you can't hear the tape as it's being recorded, only the source signal. A three-head deck lets you A/B the source against the recording in real time and catch problems before the tape is finished.

Belt-Driven Single-Capstan Transport with Full-Logic Controls

The transport is belt-driven with a single capstan, the classic consumer approach. Belts are the wear item. Multiple sellers still stock capstan and drive belts for the A-500, A-500 MKII, A-510, and A-510 MKII, which is good news for anyone contemplating a purchase. Full-logic transport controls replace the mechanical piano-key linkage found on cheaper decks, and the seller description of the controls as "very smooth" is at least consistent with what a logic-controlled transport should feel like. With belt-drive, wow-and-flutter performance depends heavily on belt condition. A stretched or hardened belt will show up as pitch instability long before anything else fails.

Manual Tape Type and Equalization Selection

The deck handles normal, chrome, and ferro-chrome tapes, with manual selection for both tape type and equalization. Ferro-chrome was a short-lived formulation that sat between chrome and metal in both cost and performance, and decks that supported it were aimed at users who cared enough to buy premium tape. Manual selection means the user sets the switches rather than relying on auto-sensing. Get it wrong and the high end will be noticeably off.

Mechanical Tape Counter with Memory Stop

The counter is a three-digit mechanical one with memory stop. The memory-stop function lets you zero the counter at a specific point and have the transport halt there on rewind, which is useful for cueing a specific track or returning to a marked position.

Dolby NR

Teac's own advertising in Audio (March 1979, p.141) billed the A-500 as offering full-frequency response while monitoring, with the Dolby NR circuit said to let you record encoded and monitor decoded. In other words, you hear what's actually going onto the tape rather than the raw source. That's a notable claim for a two-head deck, where monitoring off-tape isn't possible. Whether the circuit was Dolby B specifically isn't confirmed for the A-500. The Dolby B reference in the research belongs to a different Teac model and shouldn't be applied here.

Historical Context

Beyond the 1978-1980 production window, the 1,400 DM launch price, and the fact that the deck was made in Japan, the historical record for the A-500 is essentially empty. No model-specific history has been found. The documentation does show that the A-500 shared a service manual with the A-510, and shared parts - output level/timer knobs and pinch rollers - with the same sibling. Belt listings name the A-500, A-500 MKII, A-510, and A-510 MKII together, which suggests a family of related decks built on common tooling. Whether the A-500 sat above or below the A-510 in the lineup isn't stated anywhere in the sources.

Teac advertising for the model ran in Audio in March 1979, placing the deck squarely in the company's late-'70s cassette push. The A-500i — a different product entirely, an integrated amplifier — shares only a number with this deck, and the two get conflated regularly in online discussion.

Collectibility & Value

Prices run in a wide band. At the low end, parts listings dominate: capstan and fast-wind belt kits for the A-500 MKII run around $8.33, and a capstan belt covering the A-500, A-500 MKII, A-510, and A-510 MKII sits at $12.50. At the other end, complete decks have sold for $440 (a fully serviced A-500 MKII) and $200 (a deck with its cabinet). One source lists typical prices in the $25 - $48 range, which suggests the market is thin and inconsistent. Condition, completeness, and whether the belts have been done are doing most of the work in pricing.

Maintenance is the main practical concern. Belts are the known wear item and remain available, which is the most important thing to know before buying. A recent dealer listing for a surviving A-500 MKII noted fresh belts and the original box. A 57-page English service manual exists with full circuit diagrams, and an original physical copy is available from at least one specialist seller. No common failure modes beyond belt wear have been documented for this model, and no capacitor replacement or cleaning procedures have surfaced in the sources. Anyone going deeper is working from the service manual rather than from a body of accumulated owner knowledge.

Owner sentiment, where it exists, is positive but thin. A cassette-culture forum thread title describes it as "a gorgeous 70s deck" - no body content is available, so that's a headline rather than a review. A YouTube title for the MKII calls it a "special cassette deck" and "professional." No proper listening impression has surfaced.

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