General
The EVH ECC83/12AX7 Tube Kit Pair bundles up two preamp valves, making it an ideal pack for upgrading the sound of valve-driven guitar amplifiers, including the EVH 5150 III amp head. Each valve has already been extensively tested for microphonic noise, hum, build and function to guarantee the best quality and performance the moment it meets your preamp section and, since these valves feature an exceptional 9-pin triode design, they've been specifically set up for modern high-gain amplifiers. Install these tubes and what you get in return is tight, powerful and bright yet warm output - ideal for upgrading the sound of an older vintage model or a new model fitted with standard preamp valves.
