-40%
12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%
12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%
12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%
12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%
12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%
12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%

12AX7 Mullard, I61, Copper Grid Posts, B0J = Blackburn 1960, TV-7 Test = 92%/92%

$ 29.04

  • Brand: Mullard
  • Country/Region of Manufacture: United Kingdom
  • MPN: 12AX7 / ECC83
  • Model: Codes: B0J & I61
  • Seller Notes: “This Mullard 12AX7 / ECC83 Tube Tests very good and balanced on my TV-7 Tester”
  • Type: Dual Triode (preamplifier)

Description

12AX7/ECC83 Mullard I61, Copper Grid Posts, Code B0J = Blackburn 1960, TV-7 Test = 92% / 92% Mullard Code B0J: Blackburn, 1960, October (see 2nd photo). Mullard Revision Code/Series Code is IB1. I used a stereo zoom microscope with LED ring light and even with this equipment, only a trace of the "1" in IB1 remains (just above the "J" in B0J ). This tube has copper grid posts (see 3rd photo). O-Getter and 14mm Plates. The paint on this tube is gone except for a partial "MADE IN GREAT BRITIAN" (see 1st photo). Tube tests good and balanced. Triode 1 : TV-7 Reading = 46 = 1150 umhos = 92% Triode 2 : TV-7 Reading = 46 = 1150 umhos = 92% Tube also test Good for Shorts and Gas FOR Reference: Minimum Good TV-7 test value for a 12AX7 is 32 (800 umhos). FOR Reference: Typical TV-7 test value for a New 12AX7 is 50 (1250 umhos). This Auction includes the following: ONE: Mullard 12AX7 / ECC83 Vacuum Tube, Codes B0J & I61 (the tube described and pictured). BUYER: We prefer to see payment within 2 days of purchase, and will ship this item within 2 business days after receiving payment. BUYER: If you are not happy with your purchase, please contact me before leaving a neutral or negative feedback. I will always work with you on a remedy.