The 12AT7 tube type is equivalent to the European ECC81 tube and can be used in any 12AT7 or ECC81 circuit. The Electro-Harmonix 12AT7WC-EH tube is great for phase inverters and reverb drivers.
Other Electro-Harmonix tubes12AT7 Tube Types
Additional Information and Downloads
Electro-Harmonix 12AT7A / ECC82EH Datasheet (PDF)
Download Adobe Acrobat PDF reader
Warranty Information and Return PolicyWarranty Period: 3 months
All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
by Mike Baum
I replaced a JJ in my phase inverter socket with this tube. There was such a difference that I pulled all the other JJs out of my amps. Such a difference! My power section sounded tired before but now it shakes the stage. It was like pulling the governor off a high performance engine. I wouldn’t say this tube did anything differently than the JJ, it just does everything the JJ does better. Highly recommend!