Coincident Statement Pre Vs Aesthetix Calypso Pre

Pdreher,

What is the distinct or significant difference between the Calypso Standard and Signature?

What percentage increase in performance?

Care to share some thoughts...

Thanks

Rgd,

Stereo Amp - Pass Labs X250.5
CD Transport - CEC TL1
DAC - Theta pro basic
Speakers - Harbeth SHL 5

I hope to try out balanced (XLR) i/o - found out recently that while preamps may have xlr i/o, the amp may not have a balanced circuitry,,, hope to get a preamp with both rca and true balanced circuitry... my budget is about $6,000 - besides the two preamp mentioned, i am open to other recommendations. Preamp should be tube... or hybrid tube...

Thanks