Posted March 31 2014 - 12:21 PM
Which model "old" Adcom preamp do you have ? If you are willing to remain with Classé, you may find one of the models listed below with Bluebook prices a good match. The Phase LInear 3000 Series 2 is also an excellent sounding preamp I have had in my collection of vintage gear, and will recommend. The image below is my own, submitted to the site HiFi Engine.
DR-5 / Model 5 - $627 / $636
DR/6 / Model 6 - $1,030 / $999
CP-45 - $749
CP-47.5 - $1,100
CP-50 - $1,073
Phase Linear 3000-II:
Main system: Denon DP-59L, AudioTechnica AT33EV, Marantz Reference SA-11S2, Classé CP-50, Classé CA-300, Classé DR-10, PSB Stratus Gold is, DIY Balanced AC Power Conditioner, Classé RC-1, Acoustic Zen Cables, Oyaide and Furutech AC receptacles and power connectors, HiFi Tuning Supreme fuses, 20A isolated ground dedicated line.