Original Genalex Gold Lion ECC81/12AT7 tubes are considered among the best 12AT7 types ever made. They are hard to find and when they are available, they are expensive. Tested on a Hi End Maxi-Preamp II tester for Gain (Mu), Transconductance (Gm), and Noise (dB), a gain of <50> is the expected result for NOS in this instance,Price is for one matched pair tubes ( 2 Tubes ).
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