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  1. Tubes for Instrument Amps (86)

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  1. Best Seller
    Groove TubesSAG-MHG Marshall High Gain Preamp Tube Changing Kit Groove TubesSAG-MHG Marshall High Gain Preamp Tube Changing Kit
    Groove Tubes SAG-MHG Marshall High Gain Preamp Tube...

    Contains 2 SAG ECC83S and 1 AX7-MPI tubes optimized for the preamp stage of Marshall-style amps.

    $79.99
    MSRP:
    $99.99 (save 20%)
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  2. Best Seller
    Groove TubesGT-12AY7 Select Preamp Tube Groove TubesGT-12AY7 Select Preamp Tube
    Groove Tubes GT-12AY7 Select Preamp Tube

    Early 70's vintage gain levels with a returned wider frequency response.

    $19.99
    MSRP:
    $24.99 (save 20%)
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  3. 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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  4. Best Seller
    Groove TubesSAG-AX7-MPI Matched Phase Inverter Tube Changing Kit Groove TubesSAG-AX7-MPI Matched Phase Inverter Tube Changing Kit
    $24.99
    MSRP:
    $29.99 (save 17%)
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  1. Best Seller
    JJ Electronics5AR4 / GZ34 Rectifier Vacuum Tube JJ Electronics5AR4 / GZ34 Rectifier Vacuum Tube
    $19.01
    MSRP:
    $23.50 (save 19%)
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  2. 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:
    $69.99 (save 7%)
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  3. 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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  4. Best Seller
    Sovtek5881WXT Matched Power Tubes Sovtek5881WXT Matched Power Tubes
    Starting at $40.99
    MSRP:
    $98.96 (save 19%)
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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. 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:
    $49.99 (save 20%)
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  3. 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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  4. 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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  1. Groove TubesGold Series GT-12AU7 Preamp Tube Groove TubesGold Series GT-12AU7 Preamp Tube
    Groove Tubes Gold Series GT-12AU7 Preamp Tube

    Hand-selected for musical quality.

    $21.99
    MSRP:
    $24.99 (save 12%)
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  2. Best Seller
    Groove TubesSAG-FST Fender Soft Touch Preamp Tube Changing Kit Groove TubesSAG-FST Fender Soft Touch Preamp Tube Changing Kit
    Groove Tubes SAG-FST Fender Soft Touch Preamp Tube Changing...

    Contains 2 selected lower gain, slow rise-time 12AX7C tubes optimized for the preamp stage of Fender...

    $79.99
    MSRP:
    $99.99 (save 20%)
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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
    Tung-Sol6550 Tube Tung-Sol6550 Tube
    Tung-Sol 6550 Tube

    Starting at $74.99
    MSRP:
    $99.86 (save 25%)
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  1. Best Seller
    Svetlana6550 Tube Svetlana6550 Tube
    Svetlana 6550 Tube

    Starting at $73.99
    MSRP:
    $215.96 (save 47%)
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  2. 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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  3. Groove TubesSAG-AT7-MPI Matched Phase Inverter Tube Changing Kit Groove TubesSAG-AT7-MPI Matched Phase Inverter Tube Changing Kit
    $24.99
    MSRP:
    $29.99 (save 17%)
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  4. Best Seller
    Sovtek12AX7WC Preamp Tube Sovtek12AX7WC Preamp Tube
    $16.09
    MSRP:
    $20.82 (save 23%)
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For many musicians, there's no question about it: tubes are the best way to go. If you're here looking for tubes, you're probably in the same boat. Fortunately, there are plenty of tubes available for your instrument amps, from vintage models dating back to the tube's golden era all the way to modern amps that stick to tube-based circuitry for that irreplaceable character they can add to your sound. Generally, the most crucial tubes in your amplifier are the preamp tubes. Responsible for handling the raw signal from your instrument and pedals, the preamp section not only gives a power boost, it also defines the overall tone and gain of the sound. Because the preamp tubes are so central to the amp's function, changing them has a big impact. If you want to learn about all the different sounds your amp is capable of, experimenting with various preamp tubes is a great place to start. In an amplifier with more than one preamp tube, pay special attention to the very first one, nearest to the input—it's in the point position, and that means it's going to have the greatest effect of any one tube on the sound that eventually comes out of the amp. Power tubes come later in the amplifier's circuitry, and their job is to kick up the power level of the signal so that it can drive those big speakers. With this role to fill, power tubes don't quite have the same impact on your sound as preamp tubes—but that isn't to say they have none. If your preamp tubes were coffee, the power tubes would be cream and sugar: they don't create the 'flavor', but they sweeten it to taste. Depending on your amplifier, you may also have rectifier tubes to customize. Many tube amps use solid-state rectifiers, so you're most likely to need one of these tubes if you're using a vintage amp or a strictly all-tube model. Rectifier tubes can be difficult to classify because they don't have a direct impact on your sound. The rectifier determines the voltage that goes to the other tubes, and those tubes will give a slightly different sound at different voltages. But rectifier tubes do have one quirk that plays into your sound: when you come in strong on the attack, the tube will drop the voltage, giving a distinctively soft lead-in that builds to a swelling note as the voltage goes back to normal. When you're choosing your rectifier tubes, it's this characteristic that you're looking for. If you have a hybrid amplifier, you may only have preamp tubes—or maybe you have an antique amp that needs all three. It all comes down to what you need, whether you're fine-tuning your sound or just stocking up on replacements of your favorite tube.

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