2pcs matched New Valve Vacuum tube Russia EH 6550 Electro Harmonix 6550 EH replace KT88
2pcs matched New Valve Vacuum tube Russia EH 6550 Electro Harmonix 6550 EH replace KT88
2pcs matched New Valve Vacuum tube Russia EH 6550 Electro Harmonix 6550 EH replace KT88