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  1. RCA Grails 7025 12AX7A Matched Pair Audiophile Tubes Tests NOS

    Pure audiophile bliss: Effortless clarity with a “golden glow”—mids that wrap around vocals like velvet, highs that extend without grain, and lows with grip and texture that reveal layers in complex mixes.

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  2. NOS Brimar/ Raytheon Matched Pair 12AX7 Audio Tubes Fat Ring Getters

    NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.

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  3. Nos Matsushita ITT ECC83 Japan Holy Grail 12AX7A audio Tube

    NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.

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  4. GE 12AX7 1950's Long Gray Plate Tubes PLATINUM MATCHED on AT1000 ECC83

    Triple Platinum Matched on Amplitrex AT1000. Amplitrex AT1000 Test Results 90%+ GM = Within NOS Specs 90%+ EM = Within NOS Specs. All tubes are tested with the Audiophile in mind for SHORTS, GAS, MUTUAL CONDUCTANCE and NOISE (large tube lots are not tested for noise).

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  5. Mesa Boogie 12AX7-A Russian 2 Amplifier Valve

    Variant: Russian 2 production. Russian 2 version with stable, musical gain.

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  6. NOS Pair RCA 12AX7A ECC83 12AX7 USA TUBES Original HIGHEST EMISSIONS TV7 Tested

    This pair tests very strong. Fully tested on a TV7BU. Average new is 48.

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  7. Amperex Bugle Boy Red Tip 12AX7 ECC83 D Foil Grey Plate Tube Holland NOS

    You are buying an Amperex Bugle Boy Red Tip 12AX7 ECC83 D Foil Grey Plate Tube Holland NOS. Great Silkscreen. Measure in my TV-7D/U 47/48.

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  8. SYLVANIA 12AX7 Long Gray Plate Tubes PLATINUM MATCHED on AT1000 ECC83

    Triple Platinum Matched on Amplitrex AT1000. Amplitrex AT1000 Test Results 90%+ GM = Within NOS Specs 90%+ EM = Within NOS Specs. All tubes are tested with the Audiophile in mind for SHORTS, GAS, MUTUAL CONDUCTANCE and NOISE (large tube lots are not tested for noise).

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