Fisher FM-100-C (1964–1969)
The dial lights up, the tubes hum, and the needle sits at 88.1.
Overview
The Fisher FM-100-C is a tuner that links early high-fidelity FM to the stereo era. The original Fisher FM-100 from the 1940s was the first receiver designed specifically for high-fidelity music reproduction on FM. The FM-100-C came two decades later as its silver-finished successor, built for FM stereo broadcasting. Fisher Radio Corporation made it. Avery Fisher founded the company in New York City in 1937 to reproduce sound as faithfully as possible. He also lobbied the FCC to expand the FM band, and this tuner covers the full 88 to 108 MHz range that came out of it.
Unlike later solid-state models, the FM-100-C uses vacuum tubes, and many owners still describe the signal path as smoother and more natural than its digital descendants. It's a dedicated tuner, so it doesn't drive speakers. It was meant to be the front end of a serious system, paired with a preamp and power amp. It was built in the USA. The analog tuning scale has no digital readout and no presets - just a dial, a needle, and tubes warming up.
Specifications
| Model | FM-100-C |
| Manufacturer | Fisher Radio Corporation |
| Type | Tuner / Mono-Stereo Tuner |
| Production Years | 1964–1969 |
| Tuning Bands | FM |
| FM Tuning Range | 88 to 108 MHz |
| Tuning Scale | Analogue |
| Valve Complement | 12AX7, 6AU6, 6HR6, 6HA5, 6CW4 |
Key Features
Sleek Silver Chassis with Optional Walnut Cabinet
The FM-100-C comes in a plain silver finish, which looked modern in the mid-1960s. Fisher also offered an optional walnut wood cabinet, priced at 120 DM when new. The wood case gave shielding and protection as well as looks, and today the original cabinets are a major factor in a unit's collectibility.
Tube-Based Signal Path with Precision Tuning
The FM-100-C runs entirely on tubes: 12AX7, 6AU6, 6HR6, 6HA5, and 6CW4 valves handle RF amplification, detection, and audio output. Many describe the all-tube sound as rich and dynamic, less clinical than early solid-state tuners, with a slight warmth that doesn't smear detail. The analog tuning scale is functional too. It gives a smooth, continuous sweep across the FM band, and the needle responds instantly to your touch.
Designed for the Stereo FM Future
The FM-100-C launched when FM stereo was becoming standard, and it was built to receive those broadcasts. It isn't a mono tuner with a stereo label added. It was designed to decode the multiplex signals that carried the left and right channels. Owners have reported quirks, though. Some units work fine but the stereo indicator light doesn't come on. In certain cases only one channel plays when the selector is set to "automatic" or "mono." Switching to "stereo filter" often restores both channels, which points to a possible problem with the selector switch or the decoding circuit alignment. These aren't dealbreakers on a 50-year-old tube unit, but they're worth checking before purchase.
Historical Context
Avery Fisher founded Fisher Radio Corporation in 1937 with a clear mission: to create audio equipment that reproduced sound as accurately as possible. He lobbied the FCC to expand the FM band, which laid the groundwork for the high-fidelity broadcasts the FM-100-C was built to receive. The original FM-100 followed the Model 100 tuner-amplifier introduced in 1941, and the FM-100-C continues that lineage, updated for the stereo era. Advertisements from the time list it alongside models like the FM-90-B, FM-200-C, R-200, and TFM-200, as part of a broader high-end lineup.
Collectibility & Value
The Fisher FM-100-C is a rare find, and collectors note that complete, working units don't appear often. Prices vary widely with condition and completeness. A unit with its original walnut cabinet sold for CA$740 on Canuck Audio Mart in July 2022, while a basic example without a cabinet was listed at $70.00 on PicClick. Common issues include a non-functional stereo indicator, channel imbalance depending on selector position, and chassis rust. The wood cabinet, if present, may need refinishing. Given its age, most units will benefit from restoration - recapping, tube testing, and switch cleaning are typical. No official service manual number is confirmed, but technical support is feasible through community archives and schematics.
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Related Models
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