Upgrading digital source device is not easy


I am looking for recommendation for upgrade from Cary 306 SACD professional.

My current set up is Harbeth 40.2/Cary 805 AE/ Cary SLP 05/ Cary 306 SACD professional plyer
I am using MAC/Amarra 4.0 /  Halide Design S/PDIF Bridge USB-S/PDIF converter via coaxial input to CAry 306 sacd professional. Rega P8.
I am wondering what would be good upgrade for my digital end.
I have a lot of SACD and CD collection and I have 2t byte music digital file.
I want digital end upgrade but I have no confidence to have better sounds after upgrade  since this Cary 306 SACD Professional is really good one.
I will appreciate some recommendation.
Thanks


zone5
If I hook Cary 306 sacd pro to new DAC for CD vis digital output, can I still use this SACD player's analogue output to feed my preamp for SACDs without disconnecting digital output ?
I see.
Then please recommend DAC for me.
My music collection is mainly classical and Jazz

See the "favorite bit" DACs at the audiostream.com review site.

Steve N.

Empirical Audio