Recommendations for used CD player

Many quality spinners available: we all know that the source sets the outcome: garbage in means garbage out.

I would look for a quality build established brand used unit first ....

REGA, NAIM, BRYSTON, CYRUS, ROKSAN, PRIMARE, DENSEN, or YBA would lead my list, with the express and distinct understanding that they ALL have their own bespoke sonic signature that may or may not mesh to your taste with the rest of your gear.

the first 3 brands arguably have both a larger brand awareness and a larger distribution channel in the US continental 48 only, (not an issue in Canada or EU or Orient....) that may influence you for arguably accelerating a quicker continental 48 resale if there is an eventual change in the offing.

Are you using the DAC within the receiver or going analog out from the DVD player?

 

Yes, I'm using the receiver's DAC.

Honestly, I don't think anything for $500 is going to be better than what you have now.  Maybe stretch to a grand and buy a used Cambridge 840c or something like that.  I happen to think the Cambridge players are very good for the money.  

Thanks!