(!) (slightly micrphinic single) 12AT7 RCA black plates NOS D getter halo 1959 (12.2/10ma)

1 tube slightly microphonic) 12AT7 RCA black plates NOS D getter halo 1959 1 section) 12.2ma Gm=6200 1 section) 10.0ma Gm=5200 Good Ma range 8-10ma Good Gm range 4500-5500 small amount of microphonics when glass is tapped - Marshall Electronics MXLV69 Mogami Edition Studio Microphone - Berning ZH270 amp - Fender reverb tube - APEX 460 TUBE MICROPHONE - VTL amps - Two Rock - effects pedals