Vintage RCA mixer board preamps and PS

[kansei]

This is quite a bundle of stuff someone here may need. Looks like two RCA tubed microphone preamp modules with transformers, a mixer module, an unknown module and a power supply from an old radio station or a studio.

/noaf

www.ebay.com/itm/Rare-RCA-Vintage-T...ge-Amps-Mixer-Tone-Circuit-More-/110771116216

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These vintage 1960's RCA tube mic pre components are quite a find for those into vintage boards and recording/production gear. As a set these could be used singular or together, but would need to be wired to be suitable for your application. This listing includes (2) Model MI-12172-A voltage amplifiers Type SH-1A which are microphone level preamplifiers with 12AY7 tubes and plug-in transformers, (1) Model MI-12174-A, Type SF-1A mixer-tone (passive) circuit with 12AY7 tube, one unknown module with 12AY7 tube, (1) power supply and a set of pig-tail connectors. These are rare, vintage USA made components!! Your bid is for all of this gear together as a bundle.

 

[Alaskagram]

Rca pa

I have the entire PA.It is only missing a couple of 'voltage amplifiers',(mic. pres.)It originally had 8 mic. pre amps,now six,two tone amps,two mixing amps labeled 'volume',two power supplies and two 4 x 6V6 amps with a 5U4 for a rectifier.Each pre amp has a volume and a 'A' 'B' switch.This rig is apparently dual mono not stereo.I was given this many years ago.It came from an Army movie theater.It comes in a HEAVY steel rack.Any idea what this is? I can't find any dates or model numbers other than on the modules.Except for the tubes and the two missing pre-amps, it is in good to excellent shape missing only two volume knobs.