Groove Tube 12AT7 Guitar Amplifier Tube GT12AT7 Tested w/ Original Box

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For your review and consideration- we present you with another fine Tube from the Amplifier collection at  Magdon Music!
Please read the description below and review the photos.  The exact tube pictured and in the description is the exact tube that you will be purchasing.  If there is something that you need to know that is not in this description- please message us before buying and we will be very happy to assist! 
*** Please note that our tubes are tech inspected before they go out the door! Buy with confidence from Magdon Music!
***Shipping is for the Continental USA (lower 48 only!) Magdon Music reserves the right to ship FedEx, UPS, or USPS- depending on your ship address/ship rates.

🎸 Groove Tubes GT-12AT7 Amplifier Tube

This premium Groove Tubes GT-12AT7 is a highly desirable, professional-grade preamp tube designed for use in guitar amplifiers where clean headroom, smooth response, and stable gain characteristics are essential. Known for its lower gain structure compared to a 12AX7, the 12AT7 is commonly used in reverb drivers, phase inverter positions, and tone-shaping circuits, making it a versatile choice for many tube amp designs. This unit is brand new and ready for installation.

⚙️ Features:

• Groove Tubes premium preamp tube

• GT-12AT7 (12AT7 / ECC81 type)

• Brand new condition

• Lower gain for increased headroom and clarity

• Ideal for reverb, phase inverter, and driver circuits

• Smooth, balanced response with reliable performance

• Used in many classic and modern tube amplifiers

📄 Specs:

• Brand: Groove Tubes

• Model: GT-12AT7

• Tube Type: 12AT7 / ECC81

• Configuration: 9-pin dual triode

• Gain Level: Medium-low

• Application: Guitar amplifier preamp / reverb / phase inverter

📦 What’s Included:

• Groove Tubes GT-12AT7 amplifier tube

🔍 Condition:

This tube is brand new and has not been used. Ready for immediate installation and performance.

💡 Why You’ll Love It:

A highly desirable upgrade or replacement tube, the GT-12AT7 delivers clean headroom, smooth tonal response, and reliable operation. Perfect for players and techs looking to maintain or fine-tune amplifier performance with a trusted Groove Tubes option.

***Flat rate shipping is for USA ONLY! (Lower 48 only!)***Returns accepted***Buyer pays two way shipping***A restock fee may apply

(SC8M.SO)tube IK

If there is anything else that you need to know about these tubes or if you would like an in-hand description or more photos- please feel free to contact our professional guitar department at Magdon Music.
***Please note that Magdon Music has showrooms full of gear- both new and used. Everything is not listed online.  If you are looking for something specific and do not see it online- please feel free to message us and we'll be glad to help!
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