Aesthetix Calypso


I am ready to audition, and probably purchase, an Aesthetix Calypso line stage pre amp. My current pre-amp is the Audio Research LS 25 mk1.

Have the newer Calypso units solved the noisy tube problems? I just realized that this unit has very few tubes (only 4) and may be easy to tube roll. What are the recommended tubes to use? What else should I be aware of or look forward to hearing?
rwd
I went from ARC LS25 MK1 to Calypso, and there is no going back.
Too much info to reiterate here. See my thread on LS 25 vs Calypso. http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1123175230&openmine&Perfectionist&4&5&st0

and my input on this thread...http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1136540152&openusid&zzPerfectionist&4&5#Perfectionist

The Calypso is an amazing value in high-end audio.