Mullard KB/QDD, British Made

CV4003 M8136 12AU7 ECC82 Valve Tube

Military Box Plates, Halo Getter, Dual Printed

631 R7H2 Code in the Glass

Fully Tested on AVO VCM 163

100% Book Spec = Ia 10.5 - Gm 2.2

Ia 11.2/12.2 - Gm 2.2/2.3

New Old Stock, Supplied in White Box