Holy-grail Siemens & Halske Munich West Germany tubes. The rarest 2-getter support audio tubes ever made, with fast response, overwhelming detail, the most realistic bass, and overall perfection in a 12ax7 / ecc83 class tube.
The most rare of the West German 12ax7's! Double getter-supports - recommended for low microphonic applications. Great sounding West German workhorse tubes, reproduces sound with accurate tonality.
Superb choice for hifi preamps and guitar amps. The ecc83 double getter support design is a 12ax7 low-noise rated long-life tube made to last 10,000 hours or more.
- Tube 1 - 100% and 100%
- Tube 2 - 105% and 104%
- Tube 3 - 97% and 99%
- Tube 4 - 100% and 99%
- Tested on a calibrated Jackson 648-R - Auditioned in a Dynaco Preamp
- No shorts or leakage detected
- Excellent Tube Life Expectancy readings for all 4 tubes
- Super clean print, straight clean pins