DIY TT

+1 for Raul’s advice. The earlier Denons in the "thousand" series, DP3000, etc, did not have quartz-locked servo control. The later 2-digit series, DP47 on up to DP75 and DP80 do have that, and you want that feature. The DP75 and DP80 are the best of that later series, with the unobtainable DP100 at the top. DP100 is a very large studio type machine with a huge motor. I own a DP80; subjectively it is remarkably good for the cost, even now at somewhat higher cost compared to when I bought mine. The one thing you want to be aware of: the platter has what looks like a piece of recording tape lining the inner rim of the platter. That needs to be in perfect condition for proper speed control; there is a stationary device that reads the speed continuously by monitoring that piece of tape, and makes corrections when needed. Electronics can be repaired, but so far as I know that tape can be a problem if badly damaged.

Actually, now that I see the current prices in the auction that Raul quoted, it's a steal if you can get either TT at near that price.  BUT caveat emptor about that tape liner on the platter.

@holmz, I have a DP-3000 (no quartz lock) in a custom plinth so what you are asking can be done. You just need to spec the size of the plinth such that it can support two tonearms. You might also want to think about using arm boards that can be swapped out and support various types of tonearms you may want to use. My DP-3000 was made to support Denon arms only as my goal was to have an all Denon turntable set up.

I also have a Technics SP-15 (quartz lock) which is mounted on a plinth that supports two tonearms. If you want to explore choices outside of Denon the Technics DD tables are quite good as well.

As for quartz lock or no quartz lock, I won't go there. Both my DD tables perform really well in my system, but for what it's worth I am enjoying my idler drive table right now.

Thanks @clio09 @lewm @rauliruegas ​​​& ​@billwojo 

I did find a Luxman PD555 sort of near by, but it is ~5500 (USD). That would be a bit easier, but sucks up a lot of budget.

But maybe it is worth consideration too?

Thoren are pretty easy to fix up. You can get a TD160 super or any of those belt drives, they are easy and fun. Easy to add whatever you like as far as tonearms.

Most of the parts interchange. The 121 and 124 are a lot nicer but they are for recording, broadcasting or transcription. Playback really doesn’t need the speed to be perfect. Recording from it, could be an issue..

They have a GREAT factory suspension and a LOT of easy inexpensive mods too. As I mentioned a lot of the parts interchange on the light belt belt drives. I keep a cool 1/2 dozen on hand. TD124 and Russco are my favorites. You can always use a pedestal mount or mod the plinth for a pocket drop & swap.

Regards