Description: Up for sale, a quad of Mullard I63 coded 12AX7 tubes. These came in the Sylvania boxes pictured. My best guess, these were pulled out of something because of the single tube failure and the Sylvania tubes likely went into the circuit. 3 of these test at least fair and will likely keep going for a while. The other is destined for the trash. I believe all have identical date/batch codes printed onto them, printing is pretty nice. The notes written indicate the emission/GM results for each side, each tube on an Amplitrex tester. Most folks consider 60-65% the good/bad pass line so these are close to both sides of that line. Each will be bagged with their test results to avoid confusion upon arrival. US bidders/buyers only please. This will ship tracked and insured. General notes regarding testing: tubes are tested using fixed bias which produces the most conservative results. The tester is fed 116.4v pure sine wave battery power which allows for extremely consistent test results. My wall voltage measures all over the map and consistency suffers a bit so I've unplugged. My test rig is pictured for reference.
Price: 95 USD
Location: Georgetown, Texas
End Time: 2025-01-17T16:14:44.000Z
Shipping Cost: 4.5 USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: Mullard
Type: ECC83
Model: 12ax7
MPN: Does Not Apply
Country/Region of Manufacture: United Kingdom
