Amperex 7643 / ECF80

2 Reviews
SKU: AM-7643

Availability: Usually ships within 24 hours.

USD $‎29.95
The Amperex 7643/ECF80 tube is a vintage NOS tube from the early '80s. Made in Great Britain at Philips Mitcham factory, they have gold pins and a dimpled disc getter. This tube can substitute for the common 6BL8 and is a great choice for vintage McIntosh MR-67 tuners. Also great in the Dayton Audio HTA20BT.

Additional Information and Downloads

What does "NOS" mean, anyway?:

Commonly known as "NOS," the term New Old Stock simply refers to tubes that were made years ago but have never been used. Much like antiques, "NOS" tubes are currently not being manufactured and this means their supply is dwindling while the price continues to rise.

For most NOS tubes we have a variety of brands available. Typically these are the common brands such as RCA, Sylvania, GE, Raytheon, etc. However, there are instances where lesser known brands are in stock. If you have a particular brand you prefer you can simply request it in the Order Comment box when you place your order.

Warranty Information and Return Policy

Warranty 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

2 reviews

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Amperex 7643 / ECF80 | Excellent


Excellent sounding AM-7643 tubes.

Very precise. Cymbals sound like never before.

Has turned my amp into something special.

Amperex 7643 / ECF80 | Amazing highs.


Wow, these AM-7643 tubes have turned my audionote amp into something special.
I have never heard cymbals so precise. Absolutely incredible.