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  1. Brimar CV492/ECC83 12AX7 KB/FD Half Box Plate Tested Valve Tube (K768)

    CV492 ECC83 12AX7 Brimar KB/FD grey Plate Used Old Stock Valve Tube Code 4A0/1573 1960 1573 = designation code for brimar cv492/CV4004 Hickok gm 1700/1900 mhos gm

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  2. ECC82/12AU7 Heath By Mullard Tube

    Tested for shorts and leaks. Good filament. Bottom pins have slight greenish corrosion as seen in photo.

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  3. Mullard ECC83 12AX7 1957 Square getter NOS NIB Tested On Avo CT160

    What you see is what you get. Sold as is.

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  4. Spactz Gold 10Pcs Gzc9-F B9a New 9Pin Plated Tube Sockets Ceramic Base Suitable For 12Ax7/12Au7/12At7 Size 12

  5. NOS Marconi/Osram MOV Hammersmith ECC83 / 12AX7 Valve/Vacuum Tube - (#184)

    The plate current is a bit low, but the transconductance very high. GM (mA/V) - 1.6. ia (mA) - 1.2. Data Book Specification. GM (mA/V) - 1.8. ia (mA) - 0.8.

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  6. 10Pcs Pcb 9Pin Ceramic B9a Vacuum Tube Socket Audio Hifi Diy Amps For 12Ax7 12Au7 12At7 Ecc81 Ecc82 Size 10

  7. Mullard CV4004 M8137 12AX7 Box Plate Valve Tube Used (V13)

    CV4004 M8137 ECC83 12AX7 Valve Tube. Mullard, British Made. Used, Supplied in White Box. Box Plates, Halo Getter.

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  8. 2x NOS MAZDA ECC83 Valves Tubes Eq 12AX7 CV492 B339 CV4004 M8137

    2x MAZDA ECC83 Valves. NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V). This valve has also been tested in amplifier without any noise. Ia1 = 1.45(mA), gm1 = 1.8(mA/V). Ia2 = 1.55(mA), gm2 = 1.75(mA/V).

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  9. 1957 Mullard 12AX7 / ECC83 mC1 Long Plate Red Tip (B7B) - THIS TUBE TESTS LOW

    26.2 / 31.1 B7B. And for good reason, it is objectively one of the most musical tubes ever produced, and can reproduce the human voice, especially female voices, with shocking realism. It’s been said that the Mullard sound can be most likened to a warm British jacket of the finest tweed.

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  10. Mullard 12AX7/ECC83, Matched Quad

    Matched Quad (4 tubes). Quad is matched within 10% for both gain and conductance. We stand behind our products. Signal Format: Analog. Date First Available: September 11, 2015. Is Discontinued By Manufacturer: No.

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