@Menorca Mike That looks a nice stereo setup you have there. Here’s a snap of mine.
The speakers/amp and pre-amp are made by Quad. Amps living in the base of the speaker and eliminating the need for a couple more boxes. They stand on a pair of old, not-working speakers just to get them up to the right height. Deck is a very simple Marantz which nevertheless play beautifully. Cassette deck is a near-broadcast quality (voice) bought second hand and the CD player I got for £5 in a charity shop. The CD is actually very good because it outputs digital data and I can let the Quad’s excellent digital analogue converter do the work. I can also plug in a tablet or laptop by wire or through a Bluetooth receiver. Laptop on wire is near CD quality.