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  1. Power Tubes (45)

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  1. Best Seller
    SovtekEL84 Matched Power Tubes SovtekEL84 Matched Power Tubes
    Starting at $20.99
    MSRP:
    $61.42 (save 33%)
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  2. Best Seller
    Electro-Harmonix6L6 Matched Power Tubes Electro-Harmonix6L6 Matched Power Tubes
    Electro-Harmonix 6L6 Matched Power Tubes

    Large plate dimensions and improved grid structure mean increased power handling capabilities. Mica spacers...

    Starting at $35.99
    MSRP:
    $110.58 (save 36%)
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  3. Best Seller
    JJ ElectronicsEL34 Power Vacuum Tube JJ ElectronicsEL34 Power Vacuum Tube
    Starting at $20.90
    MSRP:
    $44.80 (save 24%)
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  4. Best Seller
    Electro-Harmonix6550 Matched Power Tubes Electro-Harmonix6550 Matched Power Tubes
    Starting at $60.99
    MSRP:
    $91.20 (save 33%)
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  1. Top Rated
    Tung-Sol5881 Matched Power Tubes Tung-Sol5881 Matched Power Tubes
    Starting at $40.99
    MSRP:
    $120.48 (save 33%)
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  2. Groove TubesGold Series GT-KT88-C2 Matched Power Tubes Groove TubesGold Series GT-KT88-C2 Matched Power Tubes
    Starting at $179.99
    MSRP:
    $399.99 (save 13%)
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  3. Best Seller
    Groove TubesGold Series GT-EL34-R Matched Power Tubes Groove TubesGold Series GT-EL34-R Matched Power Tubes
    Starting at $64.99
    MSRP:
    $139.99 (save 7%)
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  4. GenalexKT88 Gold Lion Power Tube Sets GenalexKT88 Gold Lion Power Tube Sets
    Starting at $119.99
    MSRP:
    $315.74 (save 26%)
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  1. Top Rated
    SvetlanaEL34 Matched Power Tubes SvetlanaEL34 Matched Power Tubes
    Svetlana EL34 Matched Power Tubes

    Refresh your amp with these pro-approved tubes.

    Starting at $28.99
    MSRP:
    $59.58 (save 51%)
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  2. RubyEL84CZ Premium Matched RubyEL84CZ Premium Matched
    Ruby EL84CZ Premium Matched

    The most powerful EL84 available!

    Starting at $21.99
    MSRP:
    $58.00 (save 31%)
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  3. Svetlana6L6 Tube Svetlana6L6 Tube
    Svetlana 6L6 Tube

    Classic Sylvania STR sound.

    Starting at $42.99
    MSRP:
    $64.23 (save 33%)
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  4. Best Seller
    Ruby6V6 Matched Amp Tubes Ruby6V6 Matched Amp Tubes
    Ruby 6V6 Matched Amp Tubes

    Super-high output!

    $29.99
    MSRP:
    $37.50 (save 20%)
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  1. Best Seller
    Groove TubesGold Series GT-6V6-R Matched Power Tubes Groove TubesGold Series GT-6V6-R Matched Power Tubes
    Starting at $39.99
    MSRP:
    $99.99 (save 20%)
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  2. Best Seller
    Tung-Sol6550 Tube Tung-Sol6550 Tube
    Tung-Sol 6550 Tube

    Starting at $74.99
    MSRP:
    $199.72 (save 25%)
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  3. Best Seller
    Svetlana6550 Tube Svetlana6550 Tube
    Svetlana 6550 Tube

    Starting at $73.99
    MSRP:
    $215.96 (save 47%)
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  4. Electro-Harmonix6V6EH Tubes Electro-Harmonix6V6EH Tubes
    Electro-Harmonix 6V6EH Tubes

    Great for Fenders!

    Starting at $23.99
    MSRP:
    $54.82 (save 56%)
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  1. Top Rated
    Tung-SolKT66 Matched Power Tubes Tung-SolKT66 Matched Power Tubes
    Starting at $77.99
    MSRP:
    $98.72 (save 21%)
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  2. Price Drop
    Groove TubesSilver Series ST-EL34-R Power Tube Groove TubesSilver Series ST-EL34-R Power Tube
    $22.49
    MSRP:
    $24.99 (save 10%)
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  3. BugeraEL84 Power Amp Tube BugeraEL84 Power Amp Tube
    $12.99
    MSRP:
    $19.99 (save 35%)
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  4. RubyA Tone Plug and Play Tube Adapter RubyA Tone Plug and Play Tube Adapter
    Ruby A Tone Plug and Play Tube Adapter

    Instant fat tone enhancement!

    $99.99
    MSRP:
    $150.00 (save 33%)
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It's hard to beat the warm, full tones of a tube-based amplifier. The electric guitar as we know it essentially grew up with these amps, and plenty of musicians prefer them for other instruments as well. With changeable preamp and power tubes, an amplifier gives you a great level of customization so you can tweak the voice of an electric instrument exactly the way you want it. Compared to preamp and rectifier tubes, the power tubes have a middling influence on how your amp sounds overall. In your amplifier, a power tube's role is to boost the signal's power level to a high enough point that your speakers can put out the volume you want. Being part of the signal path means that they do affect the sound, but since they're used for volume rather than tone, they have a more subtle effect than preamp tubes. So, why pay close attention to the power tubes? Simple: their effect may be subtle, but it's noticeable. The way your amplifier sounds is the result of the harmony between your preamp and power tubes. The same preamp will sound different with a change in the power tube. To put it metaphorically, think of the preamp tube as a steak and the power tube as a marinade— a steak will always taste like a steak but the marinade can definitely change the flavor. The preamp tube will always have its certain tone, but the power tube will give that tone a subtle fine-tuning. You might have to try a few different power tubes to find the variety that has the best interplay with your favorite preamp tubes. In the end, your sound will thank you for the effort. Once you know which tube works best for you, all that's left to do is stock up so you'll always have replacements ready to go.

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