Description
Here for sale is a pair of long smooth plate Telefunken ECC83/12AX7 tubes. These tubes have smooth tops and "O" getters. Both test strong on an Amplitrex AT1000 with good microphonic performance and a close gain match (Within 6% for Gm on the triode 1 and near perfect match on remaining parameters) Great tubes for stereo high fidelity circuits. These are both Fisher pulls. They have the same internal construction but the codes on the bottom and the lettering are different.Test Data:
- Test Parameters - 12AX7 Setting, Fixed Bias, Automatic
- Result Format - Plate Current % of NOS Target / Gm % of NOS Target, Microphonic performance rated on a subjective 1-5 scale, (1) being unacceptable, (5) being near perfect.
- Tube 1 Triode 1 - 75/87 - Microphonic Test 5/5
- Tube 1 Triode 2 - 100/106 Microphonic Test 4/5
- Tube 2 Triode 1 - 75/93 Microphonic Test 3/5
- Tube 2 Triode 1 - 100/106 Microphonic Test 4/5
Payment
Accepted, along with all eBay approved payment methods. - Payment required within (3) days of purchase or auction close.
Returns
No return offered for this listing.Shipping
Item usually ships within (3) business days of cleared payment. Note: This item may be eligible for international shipping either directly or through the eBay Global Shipping Program. If you are a buyer from outside of the US please contact me for additional details.