Sanyo M9901 (c. 1980s)

Documentation on the Sanyo M9901 is thin, and what exists comes mostly from reseller listings rather than any authoritative source. It was a silver AM/FM stereo radio cassette recorder - a single-cassette boombox with a 16-watt amplifier, dating to the 1980s. One listing claims the unit appeared in Stranger Things. That's unverified and may just be a seller's pitch.

Surviving listings describe it as compact and portable, with the radio and cassette functions reported working. One Pinterest pin adjacent to the model mentions belts having been replaced, though the text is ambiguous and may refer to a different Sanyo model. No original price, production years, speaker driver sizes, weight or power requirements are documented anywhere we've found. A service manual does exist. It has appeared for sale through Analog Alley and via eBay listings in the $14 - $24 range, which at least confirms Sanyo supported the model with documentation.

Marketplace asking prices have ranged from about $29 to $60. There is one conflict. Sears PartsDirect lists "M9901" as a camcorder parts model, while every other source describes it as a boombox. These may be different products sharing a model number, or an error on one site. The record doesn't resolve it.

Known specs are minimal:

Type: Stereo radio cassette recorder (boombox)
Color: Silver
Bands: AM/FM
Cassette: Single
Amplifier: 16 watts
Approximate size: 16" across by 11" tall with handle up (units not confirmed)

If you own an M9901 and can fill in the blanks - speaker sizes, power supply, original price, or the camcorder question - the archive would welcome the details.