Mullard Blackburn

Yellow Print ECC83 12AX7 Valve Tube

Short Grey Plates, Halo Getter

I62 B4D4 Blackburn Code in the Glass

Fully Tested on AVO VCM 163..

Ia 1.3/1.25 - Gm 1.7/1.8

100% Book Spec = Ia 1.2 - Gm 1.6

Used, Supplied in White Box