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  1. Tubes for Instrument Amps (86)

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  1. Top Rated
    Groove TubesGold Series GT-12AX7-R Preamp Tube Groove TubesGold Series GT-12AX7-R Preamp Tube
    $19.99
    MSRP:
    $24.99 (save 20%)
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  2. Best Seller
    JJ Electronics12AU7 / ECC82 Preamp Vacuum Tube JJ Electronics12AU7 / ECC82 Preamp Vacuum Tube
    $13.99
    MSRP:
    $14.30 (save 2%)
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  3. Top Rated
    Tung-Sol6V6GT Matched Power Tubes Tung-Sol6V6GT Matched Power Tubes
    Starting at $35.99
    MSRP:
    $54.73 (save 34%)
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  4. MullardEL34 Tube MullardEL34 Tube
    Mullard EL34 Tube

    Starting at $58.99
    MSRP:
    $137.92 (save 32%)
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  1. Top Rated
    Groove TubesGold Series GT-12AT7  Preamp Tube Groove TubesGold Series GT-12AT7  Preamp Tube
    Groove Tubes Gold Series GT-12AT7 Preamp Tube

    Tested under extreme listening conditions and guaranteed to be free of excess noise and microphonic ring.

    $19.99
    MSRP:
    $24.99 (save 20%)
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  2. Best Seller
    Tung-Sol6L6GC STR Matched Power Tubes Tung-Sol6L6GC STR Matched Power Tubes
    Starting at $36.99
    MSRP:
    $65.54 (save 44%)
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  3. Best Seller
    Groove TubesGT-12AX7-R2 Preamp Tube Groove TubesGT-12AX7-R2 Preamp Tube
    Groove Tubes GT-12AX7-R2 Preamp Tube

    A great choice for a phase inverter tube.

    $19.99
    MSRP:
    $24.99 (save 20%)
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  4. Top Rated
    Groove TubesGold Series GT-6L6-CHP Matched Power Tubes Groove TubesGold Series GT-6L6-CHP Matched Power Tubes
    Groove Tubes Gold Series GT-6L6-CHP Matched Power Tubes

    The Gold Series GT-6L6-CHP is a Groove Tubes' exclusive design, delivering true high-performance. It is a 6L6...

    Starting at $64.99
    MSRP:
    $139.99 (save 7%)
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  1. Best Seller
    RubyEL34 Matched Power Tubes RubyEL34 Matched Power Tubes
    Ruby EL34 Matched Power Tubes

    Formidable output and rugged construction!

    Starting at $34.99
    MSRP:
    $96.00 (save 40%)
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  2. Best Seller
    Groove TubesGold Series GT-6V6-S Matched Power Tubes Groove TubesGold Series GT-6V6-S Matched Power Tubes
    Groove Tubes Gold Series GT-6V6-S Matched Power Tubes

    The Groove Tubes GT-6V6-S Duet is a high-output 6V6 with an aggressive tone and is capable of handling plate...

    Starting at $59.99
    MSRP:
    $139.99 (save 14%)
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  3. Best Seller
    Groove TubesGold Series GT-6550-R Matched Power Tubes Groove TubesGold Series GT-6550-R Matched Power Tubes
    Starting at $129.99
    MSRP:
    $279.99 (save 11%)
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  4. Best Seller
    Groove TubesGold Series GT-EL84-S Matched Power Tubes Groove TubesGold Series GT-EL84-S Matched Power Tubes
    Groove Tubes Gold Series GT-EL84-S Matched Power Tubes

    This Groove Tubes Gold Series GT-EL84-S power tube comes in duet and quartet sets. This European version with...

    Starting at $54.99
    MSRP:
    $59.99 (save 8%)
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  1. Electro-HarmonixEL34 Matched Power Tubes Electro-HarmonixEL34 Matched Power Tubes
    Starting at $30.99
    MSRP:
    $101.64 (save 40%)
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  2. Best Seller
    SovtekEL84 Matched Power Tubes SovtekEL84 Matched Power Tubes
    Starting at $20.99
    MSRP:
    $61.42 (save 33%)
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  3. Top Rated
    JJ Electronics12AT7 / ECC81 Preamp Vacuum Tube JJ Electronics12AT7 / ECC81 Preamp Vacuum Tube
    $9.95
    MSRP:
    $15.00 (save 34%)
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  4. 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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  1. 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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  2. 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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  3. Best Seller
    Groove TubesGold Series GT-5AR4/GZ34 Rectifier Tube Groove TubesGold Series GT-5AR4/GZ34 Rectifier Tube
    $29.99
    MSRP:
    $34.99 (save 14%)
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  4. 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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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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