Aesthetix Audio has announced their Saturn Series Signature preamplifiers plus the Jupiter Series Io Eclipse and Callisto Eclipse preamplifiers. The Signature versions of the highly regarded Saturn preamplifiers incorporate similar improvements as developed for the Jupiter Signature series. Saturn Signature units use costly custom hybrid Teflon coupling capacitors, replacing the polypropylene units at critical inter-stage points. Both Rhea Signature and Janus Signature use hand tuned RIAA networks. Retail pricing for Calypso Signature line stage and Rhea Signature phono stage are $7,000 each, the Janus Signature full function preamp is $10,000. Standard versions remain in the line at $4,500 for the Calypso, $4,000 for the Rhea and $6,500 for the Janus. Any Saturn preamp can be factory upgraded to Signature status beginning in the 3rd quarter of 2008. Signature upgrade is $2,500 for the Calypso, $3,000 for the Rhea, and $3,500 for the Janus.