Digital clock - any recommendations?

It depends on how good the reclocker is in your Marantz.  It's really DAC dependent.  The Empirical Audio Offramp is a well-respected design. 

@soix,

I agree with you, the only way to find out is to try one of the aforementioned recommendations on external clock’s. The OP may hear improvements or may not, in any case he will squish that upgrade ‘bug’ for good.

May be someday, I will give it a go as well 😊

@folkfreak
If it is a good DAC, then what OP heard is not real. People wanting to believe expensive “tweaks” actually matter. However, going off the Stereophile measurements of the Esoteric D-07, even $100 DACs have better jitter than that, so...

If the Topping DAC did not benefit from a reclocker (meaning the issue is internal jitter and not external jitter), then why would the Esoteric be worse.

@dgarretson

Same thing, no. The better your DAC, the less improvement an external clock/reclocker makes.

To restate, if your >$500 DAC benefits from an external clock, it’s a piece of junk. There is no reason why it should not internally reclock it’s inputs, that’s just a company selling a lamborghini body with a corolla engine.

For any good DAC, the only jitter is internal, meaning external clocks, which affect external jitter, will have no effect.

Dear @mzkmxcv riddle me this then. Why are the suppliers of external clocks primarily suppliers to recording studios? Presumably the studios can afford the clock impervious DACs of which you speak so highly yet they somehow seem to think it worth investing in master clocks?

My favorite clock and the one I’m looking forward to adding to my system is of course the Abendrot https://abendrot-audio.com