1966 RCA Magnetic Pre Amp MI-10289G1 Vintage Stereo Tube Pair Microphone Preamp Rack Unit – Rare ’66 2-Channel Studio Rack Mount Mic Pre w/ Attenuation Panel by Mark Sampson for Aspen Pitman (H-1686)

1966 RCA Magnetic Pre Amp MI-10289G1 Vintage Stereo Tube Pair Microphone Preamp Rack Unit – Rare ’66 2-Channel Studio Rack Mount Mic Pre w/ Attenuation Panel by Mark Sampson for Aspen Pitman (H-1686)

$3,699.00

Category

Share this:

– For your consideration is this vintage pair of 1966 RCA Magnetic Pre Amp MI-10289G1 tube microphone preamplifiers.
– Mounted to the bottom of a vintage ’50s blue studio rack box, these (2) preamps were serviced and wired to a non-matching control panel by Mark Sampson (Matchless) at the request of Aspen Pitman (Groove Tubes).
– This incredible stereo mic pre unit is comprised of a matched stereo set of RCA Magnetic Pre Amp MI-10289G1 microphone pre amplifiers and a Groove Tubes power supply.
– Both preamps feature 3 original GE (General Electric) 12AX7 tubes.
– It includes the original hand-written notes Mark wrote for Aspen.
– Tested in March of 2025, works perfectly and remains studio-ready.
– Please scroll through the entire gallery to view all 29 images available.
– Worldwide shipping available: please inquire for an accurate quote. International buyers please send an email prior to purchasing.
– All purchases made through our site include free domestic shipping and are tax free!

If you have something like this, and you’re interested in finding out more or potentially selling yours, please click here.