Marantz SA-1

Surviving documentation on the Marantz SA-1 is thin — the Archive's files hold a single source, and beyond that, almost nothing is recorded. What the record shows: the SA-1 was a solid-state stereo power amplifier, a substantial one at that, weighing in at 21.0 kg (roughly 46 lbs). Its rated output was 150W RMS into 8 ohms and 220W RMS into 4 ohms, with frequency response specified from 5 Hz to 60 kHz. Total harmonic distortion was listed at 0.05%, damping factor at 70, input sensitivity at 1V, and input impedance at 47k ohms. The chassis measured 438 x 146 x 420mm (W x H x D).

That is essentially the full extent of the documented record. No production years, original price, circuit topology, or market positioning has surfaced. It's a heavy, high-powered amplifier from a brand known for its receivers and separates, but precisely where the SA-1 sat in Marantz's lineup — or when it was built — remains undocumented. The company's advertising of the period emphasized that Marantz set the standards others follow in amplifiers and other audio components, High Fidelity (November 1968, p.115). If you own one or have a period brochure, the Archive would welcome the details.