Groove Tubes GT-12AT7 Preamp Vacuum Tube

OUR PART #: GT-12AT7 MFR #: 5550112400

Copied to clipboard

This tube is used widely in most of the US-made amps and, in particular, the Fender amps. ...Read more

Groove Tubes GT-12AT7 Preamp Vacuum Tube Image 1
Groove Tubes GT-12AT7 Preamp Vacuum Tube
No longer available at Full Compass
We've left this page up for reference only.

Questions? Contact our
Sales and Service Pros for expert
advice and package pricing.

800-356-5844

Email customer service

Product Overview

This tube is used widely in most of the US-made amps and, in particular, the Fender amps. Fender amps with reverb use two 12AT7s - one for the reverb drive stage, and one used as a phase inverter to drive the push/pull output stage.

The 12AT7s make-up is very similar to the 12AX7 and can be substituted for a 12AX7 in a pinch, although it won't sound very good. Some players do prefer to use the 12AT7 in the driver stage in 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 our GT-12AT7 is selected for durability. Our tube will some times bear the number 6201 as well as 12AT7. This is a special (and more expensive) production run with a rugged construction. The GT-12AT7 is tested under extreme listening conditions and guaranteed to be free of excess noise and microphonic ring.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

FAQ

Product FAQ

Question:
What do I do if my item still doesn’t work or has additional problems?
Answer:
In most cases if your item has the same symptom or new symptoms it’s because the fault was originally misdiagnosed. Please be aware that we cannot be responsible for damages because of a misdiagnose......

Answer:
In most cases if your item has the same symptom or new symptoms it’s because the fault was originally misdiagnosed. Please be aware that we cannot be responsible for damages because of a misdiagnosed fault, incorrect installation, or incorrect operation of your device.

If you’re not confident in your diagnosis it may be best to take your item to a qualified technician.

Question:
The part I purchased is defective or failed soon after my purchase. Does it have a warranty?
Answer:
Possibly - some spare parts come with a warranty, typically with a shorter duration than the standard warranty for finished goods. In some cases manufacturers sell spare parts “as is” or won’t ......

Answer:
Possibly - some spare parts come with a warranty, typically with a shorter duration than the standard warranty for finished goods. In some cases manufacturers sell spare parts “as is” or won’t consider an item eligible for return if the part isn’t installed by an authorized center.

If you’re concerned about the duration of a spare part warranty please contact us before placing your order. Be aware that if you install a part to repair an item that’s still under the manufacturer’s warranty you may void the warranty in your item by performing unauthorized repairs.

Question:
Can you help me diagnose my item?
Answer:
In most cases it’s impractical to attempt a diagnosis without an item present along with the appropriate test equipment. If you’re not confident in your ability to diagnose the fault of your item;......

Answer:
In most cases it’s impractical to attempt a diagnosis without an item present along with the appropriate test equipment. If you’re not confident in your ability to diagnose the fault of your item; it may be best to take your item to a qualified technician.
Question:
Am I ordering the correct part?
Answer:
Check the product description to ensure your model is listed as compatible. Parts from the same manufacturer may seem compatible with your item but that isn’t always the case. If you find a ......

Answer:
Check the product description to ensure your model is listed as compatible. Parts from the same manufacturer may seem compatible with your item but that isn’t always the case. If you find a part that appears to be a match for your item but your model isn’t listed - please contact us so we can confirm compatibility. It is possible that a part can fit more models than we have listed.

Parts appearance may vary from the original component depending on the manufacturer the vendor uses. Please be aware that we cannot be responsible for damages because of installation of an incorrect part. Unopened, uninstalled parts can be returned within 30 days.

Question:
Can I return a service part once it has been installed?
Answer:
Installed service parts are non returnable, unless they are defective. All defective returns are exchange only - no money will be refunded.
Question:
¿Puedo regresar una parte de servicio una vez que se ha instalado?
Answer:
Las partes de servicio instaladas no son retornables, a menos que estén defectuosas. Todas las devoluciones defectuosas son solo de intercambio, no se reembolsará el dinero.