A huge range of pre-amp, input valve, phase splitter and driver valves. B9A (9 pin) & B7G (7 pin) listed here. Such as the 12AX7, ECC82, 6AU6 and 6922 to name a few. 6N1P double triode ValveA miniture, small signal dual triode, sutiable for voltage amplifier and driver stage application. 6N2P double triode ValveThis valve was designed for low frequency amplification, a double triode. 7199 triode/pentode ValveA popular triode, output pentode enclosed in one envelope. ECL82/6BM8 triode pentode ValveA popular triode, output pentode enclosed in one envelope. 6H30 / 6N30 double triode ValveWidely used double triode. Sometimes called the 6H30, 6N30. PCC88 double triode ValveB9A double triode valve, similar to a 6992/ECC88 but with a 7.6Vac heater. EF86 pentode ValveExcellent small signal pentode. Very popular as an input valve. ECF80 triode/pentode ValveTriode section and pentode section in the same envelope. ECC99 double triode ValveDouble triode driver valve, can be used in place of 5687, E182CC, 6840 and 6BC7. 6CG7 double triode ValveThe 6CG7 valve is a general purpose medium mu double triode valve. ECC81/12AT7 double triode ValveVery popular medium-mu twin triode. Same as a 12AT7. ECC82/ECC802/12AU7 double triode ValveA very popular twin triode valve. Same as 12AU7. 12AY7 double triode ValveA medium-mu double triode. Electro-Harmonix make 2 types. 12AX7/ECC83 double triode ValveVery popular twin triode valve. Numerous makes and types available. 12BH7 double triode ValveA medium-mu twin triode originally designed as a driver in TV sets. 5687 double triode ValveThe 5687 is a miniature, medium-mu twin triode for use in general-purpose. amplifier applications. 6C45P triode ValveSingle triode device used for wide band amplification 5751 double triode ValveThe 5751 is equivalent to the ECC83 but has a lower mu figure than the ECC83/12AX7. 6AU6 pentode Valve, B7GThe 6AU6 is a small RF pentode in a 7-pin miniature envelope. 6189 double triode ValveThe 6189 is an ECC82/12AU7 equivalent valve. Designed for long life. 6922/ECC88/E88CC double triode ValveA medium-mu twin triode. Equivalent to the ECC88.E88CC, 6DJ8 and 7308 valve