Groove tubes MP-1 tube preamp. Original model preamp with Cinemag input transformer and custom 600/600 ohm output transformer.
There is a GE NOS tube on the input stage and a Telefunken on the output. Works and sounds great, VU meter lights up and does work. Comes with custom power supply that will also work on other GT mics and products. Comes with short db9 cord and power cord.
The item "Groove tubes MP-1 Microphone tube preamp" is in sale since Monday, December 13, 2021. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "edp-edp-iwgheykr5s" and is located in Bangor, Pennsylvania. This item can be shipped to United States.