7643 / E80CF

1 Review
SKU: NOS-7643

Availability: Usually ships within 24 hours.

USD $‎19.95
Each
Replaces 7643 / E80CF tube types.  An upgrade for 6BL8 and ECF80 tube types, and the Chinese 6F1 tube.

Assorted brands in stock.

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

1 review

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A noticeable improvement over the stock tubes that came with the Hybrid amp. Worth every penny.

by -

Purchased to upgrade from the factory tubes (Chinese) that came with a Hybrid tube amp. No doubts regarding the fact that these tubes are quality and a major improvement over what was installed as OEM.

Service was top notch. Shipped fast and very well packaged.

They sound incredible. Improvement in the amount and depth of the bass output and top end. Sounds as though the sound stage is much wider than the stock tubes produced.

I would recommend to anyone as an upgrade. Worth the, in my opinion, low cost to get the HUGE improvement in sound.

Equipment used:
AMP - Dayton Audio HTA20BT Hybrid Tube Amp
Source: TEAC CD player with Bur-Brown DAC
Speakers: Klipsch Industrial La Scala (completely rebuilt and modified)
Power: Furman MTX8 Power conditioner