JJ Electronic ECC99/GP (Gold Pin)
ECC99 is a 9-pin double triode usually used as a driver for directly heated power triodes (i.e. 300B and 2A3), but in some applications can be used as power tube (headphones amps, small power amps). This tube features a rugged construction and is also available with gold pins. This tube can also be a functional replacement for 5687, E182CC, 6840, and 6BL7 tubes.