Ampex 354 (circa 1961–1970s)

No single brochure or service manual documents the Ampex 354 well. Period trade ads and classified listings fill in a rough outline. The 354 was a professional tape recorder, part of the 351/354 series that Ampex marketed to broadcasters, recording studios, and educators. An Ampex advertisement in Audio (February 1961, p.47) described the series as using 10½-inch reels and claimed "more than 10,000 units in use throughout the world" by that date. That figure covered both the 351 and 354 models.

The same ad listed the 354 alongside the PR-10 (for 7-inch reels) and the 300 series multi-channel mastering recorders. That put the 351/354 in the middle of the line as the established studio platform. A classified ad in Audio (November 1970, p.90) offered an Ampex Model 354 in "fine condition" with 7½ and 15 ips speeds, in portable cases, and on a walnut formica console stand built to hold one or two 354s. This suggests the machine was sold in portable and console-mount configurations. A classified in Mix Magazine (May 1983, p.113) still listed a 354 two-track for sale, so the machines stayed in active professional use well into the 1980s.

The scanned literature has no detailed circuit descriptions, frequency response curves, or production run totals. What survives is enough to place the 354 as a capable, widely-deployed professional recorder in the early 1960s. It was sold in both mono and stereo / multi-track formats, and built to the same rugged standard as Ampex's better-known studio machines.

Type: Professional tape recorder (10½-inch reels)
Speeds: 7½ and 15 ips
Configurations: Full/half track mono (352-U), two-track stereo (352-2U), two-and-four-track (352-2/4U)
Heads: Three (erase, record, playback)
Mounting: Portable case or console-mount (walnut formica console stand available)
Price (1961, unmounted): $1,195 (full/half track) to $1,640 (two/four track)
Period in service: At least 1961–1983 (per classified listings)