Studer A80VU MKIII 24-Track
A transformerless-output multitrack that studios trusted to keep the low end intact across a room full of cable.
Overview
The big change on this revision was electrical, not cosmetic. Studer made transformerless output amplifiers standard across all multi-track versions of the A80VU MKIII, and period trade press ads pointed out that the change came with no price increase. Mix (November 1981, p.101) ran the announcement under the "analog alternative" banner and put the new output stage up front as the reason to look at the machine. A studio with long cable runs between the machine room and the control room had a use for that. Low source impedance meant the signal survived the trip.
The output stage used four power transistors. Low source impedance was specified at 22 ohms, which is why long cable runs didn't degrade the signal. Frequency response was quoted at 14 Hz to 50 kHz, +0/-1 dB, with total harmonic distortion under 0.001% at 1 kHz at +24 dBm output. A 24-track that stays clean at 1 kHz is one less thing to worry about when you're stacking sixteen overdubs. A new low-distortion transformer line amp card was also available as an option.
The headblock was redesigned. The erase head sits immediately adjacent to the record head, with tape travel time between the two heads under 40 milliseconds at 30 ips. Short head spacing means the machine punches in and out accurately, so a guitarist's fix lands where the guitarist meant it, not a syllable late. Punch accuracy on a 24-track is the difference between a usable take and a re-cut, and Studer engineered for it deliberately.
The transport was also automated. A full-function channel remote and a microprocessor-controlled autolocator with 20 address memory were part of the package. In practice the machine could be driven from the control room and could return to marked points without a second engineer hovering over the deck. The A80VU MKIII 24-track shows up in studio equipment lists from the era as a working machine, not a showpiece: DB (November 1989, p.29) lists a Studer A800 MR III 24-track in a facility's gear roster.
The documentation is clear on one point: this is a two-inch 24-track, not a quarter-inch machine. The A80VU MKIII 24-track is a studio multitrack. It is not a portable, not a mastering deck, and not something you move by yourself. Anyone shopping for one today needs a machine room to put it in.
Where the documentation thins out is on the usual collector questions. Production years, original list price, and the specific revisions between this MKIII and other A80VU variants aren't established in the sources available here, so those are questions to bring to a Studer specialist rather than to guess at. What is established is the engineering intent: transformerless outputs, a redesigned headblock for punch accuracy, and a transport that could be run from a distance. Those are the reasons the A80VU MKIII 24-track earned its place in rooms that could have bought anything.
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