New Matched Quad (4) TAD 7025 / E83CC-Cz / 12AX7 High Grade Vacuum Tubes

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New Gain Matched Quad of Tube Amp Doctor 7025 / E83CC-Cz (12AX7 / ECC83) Highgrade Vacuum Tubes

A specially selected tube for the emphasis of warm tones, lows, mids, overdrive and even highs. The A-Frame construction makes this an exceptionally low noise tubes, perfect for high gain applications.

Tested & screened for the following by TAD & double checked and/or matched by us. This tube was specially selected as high grade by TAD.

-      Low Noise Test

-      Microphonic Test

-      Gain Test

-      Sonic Tests

-      Shock Tests

-      Listening Tests

-      Balanced Output Test

Testing and/or Matching

Tested and/or matched at full operating voltage with regulated power supply on a MaxiPreamp tester for both gain (Mu) and general mutual transconductance (Gm). Our goal is to match within 5% with an upper limit of 10% (15% is the industry limit to consider a set).

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