(!!!!!) (Single) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new (2.8/3.6ma) (mic grade)
1 low noise tube) GL-6072 GE 5 star triple mica black plates "O" getter halo 1962 like new from bulk pack in white box - fairly good printing 1 section) 2.8ma Gm=1600 1 section) 3.6ma Gm=1800 Tested on Amplitrex Vplate=250V Vgrid=-4V Good Ma range = 2 - 3ma Good Gm range = 1500-1700 - sE Electronics Z5600a II Tube Microphone- Fender Bassman 1953- Korby Kat- Telefunken 251- Silvaweld SWC 450 preamp- Peluso P12 mic- Kondo M-1000 and Kondo KSL-M77 - Kondo Kassai Silver amp - Kondo KSL-Kegon Power Amplifier- Avantone cv12- Rode mic (Classic I)- Audio Note L3 phono- Ongaku- AKG C12 1950's- AKG C12 VR- Soundelux U95- Soundelux E251C- Soundelux ELUX 251 (recreates the sonic beauty of the Telefunken ELAM 251)- Electronaut M63 mic preamp 2010- Pearlman Microphones TM 250 (like E LAM 250)- Lawson mic- Chunger C12 clone