Sylvania 6350 - U.S. Made 1960's vintage. The coolest stuff for VTL amplifiers. Most of them are branded Sylvania, some are branded for IBM. Super selected and screened to get the best of the best.

Label and box may vary from picture above.

The 6350 is an American military uprated version of the 12BH7A. They are different and cannot be substituted.

The 6350 has a different pinout to the 12BH7A.