GZ34MullardBranded MiniwattDarioRound TipBaseBlackBottle HeightHalfCode On Tubef32 B4B2CountryGreat BritainFactory CodeB - Mullard, BlackburnGetterO-O Double GetterGlass ColorClear GlassMicaDoublePermanentidtko6jqzqsPin ColorSilver PinsPlate ColorMatte GrayTip ShapeRound TipYear1964More GZ34 type tubesGZ34, 5AR4Branded ZaerixGZ34, 5AR4Branded SonotoneGZ34, 5AR4, F32MullardBranded SylvaniaGZ34MullardBranded PhilipsGZ34PhilipsBranded MullardGZ34, 5AR4, F33Branded AmperexGZ34MullardBranded IttGZ34Branded PhilipsMiniwattGZ34, F32Branded ValvoGZ34More tubes manufactured by MullardEL34, XF2MullardBranded SylvaniaCV491MullardEL37MullardBranded AmperexEL34, XF2MullardBranded Philips6CA7, EL34, XF2MullardBranded AmperexECC33, FX1MullardBranded ValvoECC82, I61MullardBranded ValvoEL34, XF2MullardBranded PhilipsEL34, 6CA7, XF2MullardBranded Siemens12AU7, K61MullardBranded TungsramMore tubes branded MiniwattECC83Branded MiniwattDarioECC83, MC1ValvoBranded PhilipsMiniwattE90FBranded MiniwattECC40Branded PhilipsMiniwatt6189Branded MiniwattDario6SN7GT, R93MazdaBranded PhilipsMiniwattECC83 12AX7Branded MiniwattEL6Branded PhilipsMiniwattEL34Branded MiniwattDario4654, 4654KBranded MiniwattDarioPhilipsMore tubes branded DarioECC83Branded MiniwattDario6189Branded MiniwattDarioEL34Branded MiniwattDario4654, 4654KBranded MiniwattDarioPhilips12AX7SBranded RTCMiniwattDarioGZ32Branded MiniwattDarioGZ32Branded MiniwattDario4654Branded AdzamMiniwattDarioECC83, 12AX7, MC2R/T La RadiotechniqueBranded DarioMiniwattECC82Branded MiniwattDarioRTC