Turntable with stable speed.

The Amadeus has better pitch stability than many other belt drives but you would do better to look at a brinkman Bardo, technics or Garrard IMO.

Get a Technics SL-1200 MK 5 modded by KAB USA and call it a day.

If speed stability is you primary concern, the late 70s DD japanese systems really had that down pat. I bought a Sony PS-x65 for my wife, due to the auto features. I has a composite plinth and a magnetic strip under the platter to measure speed which is then locked with a quartz frequency generator. Based on the strobe, it never fluctuates from dead on, at least for the pretty long time I watched it to see if it did. Even the best belt drives I have watched have some fluctuation, not a lot, and not audible to me, but not rock steady like the Sony. I suspect the other DD of the same vintage are similar. Now, get one of the high end ones for about $500, put on an SME 309 and a Lyra Delos, and you should have an excellent system.

Sorry, I meant "47 Labs" not "RS Labs".
see here

In the above, I was referencing a post responding to Doug that was not posted.

I cited the novel design of the 47 Labs tt as a cure for belt creep, among many other things I wrote in said post. Another treatment I mentioned was use of a capstan to keep the belt close to both the platter and the motor pulley over most of their circumferences.