Vintage Pair Mullard Ecc83 12ax7 Amp Tube Tubes Date Match Long-plate Test No
VINTAGE PAIR MULLARD ECC83 12AX7 AMP TUBE TUBES DATE MATCH LONG-PLATE TEST NOS BLACKBURN TUBES. Test results: 44/46 & 50/46 reference goos is 32 being the min. Tested on tube tester TV7 military calibrated. Also tested in an amplifier and a preamp, for audio sound. Please feel free to ask questions. Please study all pictures.
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