The ACOUSTIC Model 500 'Keyboard Control Center.' Never seen this piece before. The original ACOUSTIC amps from the early 70s…
Thanks to Steve DiCostanzo and WPKN 89.5 FM in Bridgeport CT for inviting me on-air for two hours last night…
The culmination of the past 4 months of crate digging: Summer 2011 at Preservation Sound. If you see me, ask…
Strings & Things Memphis advert for keyboards circa 1977. Been looking through some mid-70s issues of "Contemporary Keyboard" (h.f. "CK")…
I play the keyboards. Images of Rock n Roll Keyboard players circa the mid 1970s.
Alright! So earlier this week I described the successful completion of the RCA OP-6/BA-2 microphone preamp. Check out this previous…
The vacuum-tube powered program EQ that I described in this previous post is nearly complete. This thing has sat on…
Pilot was one of the classic NYC Golden-Age Hi-Fi makers (see here for earlier coverage on PS dot com). Although…
(image source) The RCA OP-6 'Portable Amplifier' is one of a handful of truly visually-iconic vintage mic preamps. The OP-6…
Circuit for a simple bass/treble parametric equalizer that uses no inductors. Could be a useful piece. Not sure if 250k/500k…