Tandberg TCD 340A (1978–1982)

A three-head, three-motor Norwegian cassette deck that Tandberg's own advertising called "the finest cassette deck you can buy." This time there was some engineering behind the claim.

Overview

The TCD 340A arrived in 1978 as the vehicle for Tandberg's patented Actilinear recording system. Conventional record amplifiers used passive components to feed the record head. Actilinear replaced them with an active transconductance amplifier - in Tandberg's own words, an "active current generator" - for optimum matching to the head. The company's advertising, which ran across the British studio press in late 1978, claimed the change delivered up to 20 dB more headroom and reduced intermodulation caused by slew-rate limitation. Studio-Sound (November 1978, p.58) carried the same claim, and noted the improved electrical separation between bias oscillator and record amplifier, which cut oscillator interference. The 20 dB figure is a marketing number, but the design goal behind it was real.

Tandberg designed Actilinear specifically to accommodate the high-coercivity iron metallic particle tapes then about to hit the market, and the company's copy named 3M Metafine as the example. Studio-Sound (November 1978, p.58) reported that with pure metal tape in the cassette format, the system yielded a 10 dB better signal-to-noise ratio at 10 kHz and 5 dB at lower frequencies. HiFI-Stereo (February 1979, p.24) noted that a modification kit for the 340A would be supplied to dealers later that year to bring existing decks up to the metal-tape standard. Not every example on the used market will have had it fitted.

The deck is a three-head, three-motor machine, which was a serious specification for a cassette deck of the period. HI-Fi-Stereo-Buyers (March 1979, p.35) listed the 340A at $1150 and singled out user-adjustable azimuth among its features. That lets the owner correct head alignment against the tape instead of trusting a factory setting that may have drifted over four decades. The same listing identifies it as a three-head, three-motor design, which puts it in the top tier of late-1970s cassette engineering rather than the consumer mid-fi bracket.

Tandberg was candid about who the deck was for. The company's own advertising conceded that its equipment had "traditionally been aimed almost exclusively at the serious home recording enthusiast" - using the word amateur in its proper sense, the lover. It argued that Actilinear had made that distinction less meaningful, since professional studios were already using Tandberg cassette and reel-to-reel decks at major sessions. That's promotional framing, but it shows where the 340A sat in the market: a home deck built to studio-adjacent standards, priced accordingly.

Audio (January 1980, p.71) published a constant-bandwidth noise spectrum of Maxell UD XL-I tape recorded on a Tandberg TCD-340A at 1⅞ ips. With no noise reduction the wide-band noise level sat at −48 dB. Dolby B brought it to −56 dB and dbx Type II to −84 dB. That's a period test bench putting real numbers on the deck's noise floor, and it confirms the 340A responded well to outboard noise reduction.

The 340A stayed in the catalogue into the early 1980s. Studio-Sound (April 1981, p.60) listed it alongside the TCD 320 and the then-new TCD 440A metal-compatible deck on Tandberg's stand at a European trade exhibition. So the 340A remained a current product even as its metal-tape-capable successor arrived. Production is generally given as running from 1978 to 1982.

The record leaves out the unglamorous stuff. No dimensions, no weight, no wow-and-flutter figure, no frequency-response rating, and no confirmed original UK price have surfaced in the available documentation. Anyone chasing a 340A should verify the metal-tape modification status, check that the azimuth adjustment still moves freely, and expect the usual age-related service on a deck now well past forty years old.

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