Mullard KB/D
CV4004 M8137 ECC83 12AX7 Valve Tube
Old Logo, Dual Printed
Grey Box Plates & Halo Getter
Fully Tested on AVO VCM 163
Ia 1.15/1.35 - Gm 1.3/1.4
100% Book Spec = Ia 1.2 - Gm 1.6
Used, Clean, Supplied in Mullard Box