Mullard Blackburn

ECC83 12AX7 Valve Tube

Short Grey Plates & Halo Getter

I61 B9K Blackburn Code in the Glass

Fully Tested on AVO VCM 163

Ia 1.5/1.5 - Gm 1.9/1.2

100% Book Spec = Ia 1.2 - Gm 1.6

Used, Supplied in White Box