How to Bias a Tube Amp 5881 Tubes For Sale
6L6 / 5881 / KT66 / 7027 / EL37 | TubeDepot.com WARNING - Stored Electrical Energy inside your amplifier! DO NOT Touch anything that you do not understand and have tested Current 5881 options. | Marshall Amp Forum Harman-Kardon A300 amplifier 6L6GC/5881 modification test Unfortunately, upon further testing, this modification wasn't successful as the power transformer began to get too hot, maybe due New SOVTEK 5881 tubes biasing in my JCM900 ...