09
Août
Two Mullard The Fisher 12AU7A Tubes Tested Strong TV-7/U K61
Two Mullard 12AU7A tubes, marked The Fisher. Date codes K61 R01 and K61 R91. Last 3 digits hard to read, R is good, other 2 not sure. Tubes =...
08
Août
2 GE General Electric 12AU7A Red Label Tubes Copper Posts Matched D/C’s Tested
Up for sale are 2 GE General Electric 12AU7A Red Label Tubes. Nice intact labels; matched date codes = 64-13/188-5.
08
Août
NOS Matched Pairs Sylvania JAN 5814A / 12AU7A Gain GM Noise Tested USA
Each tube has been individually tested on a Maxi-Preamp II and the pair has been carefully matched for The price is for one matched pair of two tubes. Exact...
08
Août
NOS Amperex 12AU7A ECC82 Mullard Blackburn B3H4 1963 Tube Low Noise Tested
Microphonics are excellent — almost zero microphonics. Noise: 85.7 / 85.6 dB. Tested strong and closely balanced.
08
Août
Pair New Golden Dragon ECC82 12AU7A Matched Pair
Pair New Golden Dragon 12AU7A/ECC82. Tube 2: 107/111.
08
Août
Psvane T-II 12AU7-T Matched Pair Triple Mica Gold Pin Strong Tested Low Noise
Both tubes test strong, balanced, and closely matched. The mA/V readings are especially tight, making this a nice pair for stereo hi-fi use or anywhere a well-matched 12AU7 /...