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Item # 100153385 | Customer Ratings: Ratings ( 3 Based on 2 reviews)

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Groove Tubes Gold Series GT-12AT7 Preamp Tube
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      Groove Tubes Gold Series GT-12AT7 Preamp Tube (100153385)
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Tested under extreme listening conditions and guaranteed to be free of excess noise and microphonic ring.

The Groove Tubes GT-12AT7 preamp tube is manufactured to the highest quality JAN spec. NOS, made in Russia for extremely long life. Used widely in most U.S.-made amps and, in particular, Fender amps. Fender amps with reverb use 2 - 12AT7s -- one for the reverb drive stage, and one as a phase inverter to drive the push/pull output stage. The makeup of the 12AT7 is very similar to the 12AX7 and it can be substituted for a 12AX7 in a pinch. Some players prefer the 12AT7 in the driver stage of a Marshall for a cleaner, brighter tone. (The driver or phase inverter is the 12AX7 located nearest the power tubes.) The 12AT7 is rarely used in a tone-generating stage, but rather in function stages, so the Groove Tubes GT-12AT7 is selected for durability.

Country of origin: Russia

Groove Tubes Gold Series GT-12AT7 Preamp Tube Features:

  • Tested under extreme conditions
    Guaranteed free of excess noise and squeal
    JAN spec.
    Military
    NOS
    Extremely long life

    Country of origin: Russia


Groove Tubes Gold Series GT-12AT7 Preamp Tube Specifications:

  • Country of origin: Russia


Groove Tubes Gold Series GT-12AT7 Preamp Tube

90 day warranty on power tubes, includes replacement of whole set if one tube goes bad.
180 day warranty for preamp tubes.
3 year warranty on SubstiTubes and Solid State Rectifier.
Check with M-Audio for warranty on GT microphones.

Get your gear covered!

Now you can get added warranty protection for your new gear. Pro Coverage steps in where the manufacturer's "normal wear and tear" ends. Our PRO COVERAGE program offers you UPGRADED COVERAGE if your product ever fails!

Pro Coverage includes:

  • Accidental damage protection (new gear only)
  • Expedited Repair
  • Free Shipping (for returns or repairs)
  • 100% Coverage for Commercial Use
  • Extended Return Period
  • Extended Price Protection
  • No Lemon Guarantee
  • Free Transfer of Coverage to a new owner
  • Repair Costs Covered for up to 3 years from date of purchase
  • Repairs Can Be Authorized Toll-Free by Phone or the via the web
Product Reviews
(Based on 2 reviews)
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Viewing Reviews 1 - 2 of 2 |
  • Terrible. Do not buy these.

    As reviewed by Anthony C. on 9/6/2011

    I was persuaded into buying these tubes instead of waiting for the JJ tubes I should've waited for. They sound so overly-mellow and flat with no punch. They are not bright like the salesman told me, and you can barely hear the high end in chords. Playing the higher strings is the worst, as they sound bare and empty. Not to mention that everywhere you read about Groove Tubes, it says they're just re-packaged and re-labeled (sometimes cheaper) tubes from other brands. Save yourself the stress and money... don't buy these.

    1 of 1 people found this review helpful.
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  • use the AT7 in the right position!

    As reviewed by Paul LaRocca on 7/4/2012

    It seems like the previous reviewer did not understand the use of the AT7 tube. It is used in the reverb channel or more importantly in the phase inverter position (the tube before the first power tube). The GT website even states this. It is primarily a functional tube (above) and not a tone tube to be used in V1 of V2. It is roughly 80% the power of an AX7. This tube does contribute more to feel than tone and is brighter and more pick sensitive when used as a PI. You can increase the Master volume and use it to overdrive the power tubes. I'm not a fan of GT but this is one of their best tested Russian tubes (still used as military standard) and durable tubes made to last. So use it correctly and you will get a softer, more articulated playing amp!

    1 of 2 people found this review helpful.
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