TESTED GAIN (89.4, 94.9) RAYTHEON? FOR BALDWIN 12AX7A / ECC83 TUBE MADE IN JAPAN
TESTED GAIN (89.4, 94.9) RAYTHEON?. FOR BALDWIN 12AX7A / ECC83 TUBE MADE IN JAPAN. While performing an audio tap test on the Maxi Preamp through a guitar amp Triode A tested good when tapped, Triode B tested excellent when tapped.