Thanks for the responses. I forgot to say that I'm trying to stay under the $500 mark. Maybe that's being optimistic but that's what I'm hoping for. I also have a fairly modern DAC in a system called the MyDac from Micromega. I like it and it was inexpensive. I've had a Cal Audio Sigma II tube Dac, MSB Digital Link and a Museatex Bidat (needs repair) All sound good but very old.
Dac: Old vs New
I have older DAC's that sound good but I've had them for several years. Benchmark DAC 1 and PS Audio Digital Link III with Mods. Would a newer DAC from, Topping (DX-5), Schiit (Modi Multibit 2)or SMSL, be a SIGNIFICANT improvement in sound? Seems like the newer DAC's have way more resolution and transparency. I prefer those attributes in gear over warmth.