The BSR was so common, going on just about everything from department store's/electronic store's private labels, to Lloyd's Gerrard... It was belt-driven...
My combo was a Panasonic of which the cassette slid in horizontally, but you had toy be careful not to record over the tape you didn't want to record over as the "protector" would be at the top of the tape which was still sticking out of the front...
Some of the bulbs were burned out, but luckily I got them all replaced, just to in the end, have a blank radio dial... The record-changer player, which had all four speeds, was replaced by a single-play Technics, which became a Marantz, then an automatic Technics single-play, of which I now have an Audio Technica 'DJ-type' player...
I had a secondary set-up using a Radio Shack auxiliary selector pre-amp that powered my Marantz player it got moved to & had a set of speakers with it...
Cassette decks replacing the one in the unit was a Radio Shack play-only, followed by a Radio Shack record/play that were just small units, not the full-length stereo-compnent sized, much like a Radio Shack 8-Track player I had, too...
I have a long Technics cassette deck, which unfortunately cost me two of my week's pays, for two repairs, so I am reluctant to use it, though I still have a few prized-cassettes, and a few titles that are only available on cassette that I am trying to keep getting life & play out of...
CD players, I got one to last ten years, first a Pioneer from Montgomery Wards, from 2003, to 2013, so the second one, a Cambridge that replaced the Pioneer which was my first, and I have a Kenwood 6-disc changer rescued from the garbage pile across the street, right before it hard-rained!
The Panasonic compact had its own speakers, while for a short time I had a JBL with an orange digital readout, that all the separate components were mailed with, sporting the readout as a radio dial, and buttons as selectors for the records, and CD, and probably refrained from tape play...
And I bought a set of RCA speakers for it, carefully cutting the wire I bought until I had an equal amount of feet for each one to be plugged in and be set apart... Which are both accompanying my current set-up...
The second spent the shortest time enough that you would only remember the first and now there third, a Technics analog receiver that my in-laws gave me, that for the 45-years-old it's pushing, it works great, though the AM doesn't come in too well, as much as the FM...
I also had a JVC FM-compact FM/CD, I also bought at Montgomery Wards, a wood grained with orange dial, as opposed to a gray with a blue dial, which was pretty neat, and the CD was a top-loading on top of the unit, the lid flipped up & down for...
-- Dave