Mullard 12AX7 / CV4004usedMullard  12AX7 / CV4004Unused, platinum-grade NOS Mullard tubes bought from Upscale Audio less than a year ago. I sold the amp I was planning to put them in, so can no longer use the tubes. Paid $752. Upscale tested, gra...450.00

Mullard 12AX7 / CV4004 [Expired]


no longer for sale

Unused, platinum-grade NOS Mullard tubes bought from Upscale Audio less than a year ago. I sold the amp I was planning to put them in, so can no longer use the tubes. Paid $752. Upscale tested, graded and cryo-treated. 
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