TubeDepot supplies vacuum tubes for musical instrument amplifiers, Hi-Fi amplifiers, vintage vacuum tube recording gear and associated equipment. We provide tube sets for virtually any vintage or new production amp on the market. This set contains 2 JJ ECC803s / Hi-Performance 12AX7 Gold Pin Preamp Vacuum Tube
Item Tag: Preamp Tubes
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Mullard EF86 6267 Matching Pair Blackburn UK Preamp Tubes
We cannot be responsible for what tubes test in another tester. Matching 1961 date codes of.
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Pair (2) 1959 Amperex La Radiotechnique Chartres France 6BL8 ECF80 Preamp Tubes
Here’s a good pair of 1959 Amperex La Radiotechnique / Chartres France. 6BL8 ECF80 Preamp Tubes.
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2 NIB NOS Tektronix selected RCA 12AU7 tubes TV7 & AT1000 tested excellent
AT1000 test results 2 NIB NOS Tektronix selected RCA 12AU7 tubes. Minimum good 12AU7 per section-Gm: 1.40 mA/V, Ip: 6 mA. Nominal/new 12AU7 per section-Gm: 2.20 mA/V, Ip: 10 mA. Excellent testing and great sounding tubes.
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Tube Tuner/preamp Project
Preamp has no tubes. Tuner dial turns. All tubes included in Tuner. Cases are nice – no rust or corrosion.
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RCA 5692 preamp tubes premium 6SN7 tested strong and matched pair
One pair of RCA 5692 tubes. TV-7D/U tested at 100, 95 and 93, 90.
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Quad Set (4) TESTED STRONG Sylvania 1960 12AU7 / ECC82 Long Plate Preamp Tubes
You are buying a set of four tubes.
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(2) Siemens Smooth Plate 12AX7 ECC83 Vacuum Tubes O Getters Test NOS on TV-7B/U
Tube 1 tests at 54/58 and tube 2 at 52/54 with 32 being the minimum score for a good tube (with 65% life remaining).
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(2) Ten (Kobe Kogyo Corp) 12AT7 Preamp Tubes Made in Japan Test Strong Amplitrex
(2) Ten (Kobe Kogyo Corp) 12AT7 ECC81 Preamp Tubes Made in Japan. Tested on an Amplitrex AT1000.