: A high-density linear converter player. Some variants include a 5-disc carousel (CDP-C231 or similar).

: An AM/FM stereo tuner capable of presetting up to 30 stations (20 FM / 10 AM).

The lists specs that are still impressive for a bookshelf system. Knowing these helps you match speakers and understand the power output.

: Buttons for storing and recalling preset EQ effects.

I just picked up a vintage Sony LBT-D505 mini hi-fi stack (the one with the dual cassette deck, 5-disc CD carousel, and separate tuner/amp). It sounds great, but mine came without a manual.