Siemens 12AX7 / E83CC

The late 1960s Siemens E83CC tubes in this precisely matched pair are premium quality 12AX7 / ECC83 tubes. They have gray plates and halo getters. Both tubes test as new and are matched for both current draw (mA) and transconductance (Gm).

This 1966 Siemens 12AX7 / ECC83 preamp tube has gray plates and a halo getter with dual support posts. The white label has the Siemens logo and the Munich factory code is etched in the glass. Tube tests as new with balanced sections and very low noise.

This rare 1958 Siemens 12AX7 / ECC83 preamp tube has long gray plates and a halo getter with dual support posts (mC5 series). The Munich factory code is etched in the glass. Tube tests good with very low noise.