Misc preamptubes

Medium-Mu twin triode driver tube. 3.5 watts dissipation per plate.

Dissimilar twin triode preamplifier tube used in vintage Ampeg amplifiers. This tube is 1/2 12AX7 and 1/2 12AU7.

Triode-pentode used in low power hi-fi amplifiers.

ECC802S is a long plated 12AU7 medium gain pre-amplifying double triode. Long plate provides a very rich and full sound from the deep bass to the high end.

COMBINATED DOUBLE TRIODE
ECC832 is 12DW7 pre-amplifying double triode. It combines 12AX7 and 12AU7, where the 12AX7 is used as 1st stage and the 12AU7 as 2nd stage.

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...).

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...).
With Gold-Pins

PENTODE

EF806S is a substitution for the EF86. It is a 9-pin pentode often used in microphones and in some amplifier designs can also be used on pre-amplifying stages.

• Original SED NOS EF86
• NOS
• Made in Russia

Sovtek 6C45-Pi