EL34 50/50 Valve kit for Marshall amplifier 12AX7/ECC83 12AT7/ECC81
Marshall 50/50 amp Valve Kit. EL34 quad factory matched to within 1mA anode current. “I find the Shuguang EL34-B to be a very warm sounding tube with a magic midrange. Highs are excellent, but not to sharp.