Mullard 12AX7long plate, square getterusedMullard 12AX7 long plate, square getterOne closely matched pair 1950s Mullard 12AX7 tubes with long plates, square getters and mC1 production codes (B7F and B7K). Tested by Tyler at TC Tubes with Amplitrex AT 1000. See photo for test ...200.00

Mullard 12AX7 long plate, square getter [Expired]


no longer for sale

One closely matched pair 1950s Mullard 12AX7 tubes with long plates, square getters and mC1 production codes (B7F and B7K).  Tested by Tyler at TC Tubes with Amplitrex AT 1000.  See photo for test results.  % is % of value compared to expected value for new tube.  Tubes not used since testing.  These tubes are very rare, and very desirable; see description and price ($525 per matched pair) from Brent Jesse (audiotubes.com).  Free shipping to continental USA.
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