UTC

Explore UTC vintage audio equipment in the Vintage Technology Archive.

Unknown

• LS-55 — UTC LS-55 Linear Standard output transformer — the 1950s build favourite with line and voice-coil secondaries, wired Ultra-Linear on request.
• W-10 — UTC W-10 — archive stub. No verified specs, dates, or documentation located; brand identity unresolved and indexed source material does not describe an audio product.

Other Models

• LS-10X — UTC LS-10X shielded input transformer — Linear Standard series, ±1 dB 20–20,000 cycles, tri-alloy shield for hum-prone installs.
• LS-22 — UTC LS-22 push-pull interstage transformer — 30,000 ohm split primary, 80,000 ohm secondary, 1.6:1 step-up, 20–20,000 cycles ±1 dB. The Linear Standard part behind silent triode amps.