Replacement Valve Kit for Mesa Boogie Express Plus 5:25 (4 x ECC83 1 x Balanc...
1 xPremium Grade JJ Balanced ECC83 preamp valve for the phase inverter in position V4 (the fourth valve from the input jack). One of the team will be delighted to get back to you. We have over 30 years of experience we are sure we can help.