What would you upgrade next ??

The Burr Brown module is just a digital chipset. It is what goes around it that matters. Great tubes will not make a dirt cheap amplifier into a Conrad Johnson Premier or ART. Putting the best Michelin tires on a Chevy Cobalt will not make it into a BMW M3.

A separate DAC is like a separate anything. If not, we might as well all buy an integrated receiver with a built in DVD player. (Which is available)

Jaybo...
Those Castle Harlech's are pretty large..!!!.. See Link..
[url]http://www.castlewales.com/harlech.html[/url]
.

Sugarbrie...And how is "what goes around it" any better just because it lives on a separate chassis?

Get rid of the autoformers and try a pair of AV123 supertweeters...job done!

If your system gives you goosebumps, then I would not change anything.
John

Actually gives me goosebumps.
Mabon
3/21/08

Mabon, you say your system gives you goose bumps? Good God man! that is what is called "an emotionally involving system." That is what we all strive for and many do not achieve even having spent many thousands of dollars! You have what is called "synergy" with the components you've chosen. That my friend is worth holding on to. I would definitely keep the core of the system (amp /speakers) for sure. Your source would be the one area where you may want to focus. I'd suggest keeping the one you have (the Arcam) while auditioning other cdps head to head against it. Once you find a player that brings you more emotional involvement than the Arcam, then keep that and you're free to sell the Arcam if you choose. If you can afford to do this, then that's my advice. You're very fortunate to have put together the right components for the all important amp-speaker synergy. That's half the battle in my opinion.
Good listening!