Pair of DuMont 12AU7 Tubes - NOS NIB - Amplitrex Tested

See test scores on last picture

All tubes are tested and/or matched on the Amplitrex AT1000 digital tester, in Fixed Bias mode.

Buy with confidence - I accept 30 Day returns.

For best results - before you install your tubes be sure that your power is off, that the tube sockets are tight and cleaned periodically with a product like Detoxit 100%.