This unusual 6922 variant (sometimes called the 6H30, 6N30 or 6N30P) is used in the BAT VK-50SE pre-amp by Balanced Audio Technologies. Sovtek has purchased the factory where they are made and is now importing them for BAT owners. Please note that this tube can not be used in place of 6922's in other pre-amps. It can only be used in equipment that is designed for it.
Known as the Super Tube and used by BAT in their Audio amps. Dual triode, excellent for use in Audio.