Electro-Harmonix 6CA7EH

10 Reviews

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USD $‎24.95
Designed to the exacting specifications of the Philips 6CA7 tube, this classic tetrode returns to life in a big bottle design. The Electro Harmonix 6CA7 is built to withstand today's high-gain amps while still retaining the detailed tone and component integrity of the original. The 6CA7-EH A direct replacement, with military reliability, for any EL34.

From our review, "These tubes sound every bit as good as the old EI tubes and are probably my favorite tubes for Hiwatt guitar amplifiers."

Other Electro-Harmonix tubesEL34 Tube Types

Additional Information and Downloads

EL34 Tube Review

Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System

Electro-Harmonix 6CA7EH Datasheet (PDF)

Download Adobe Acrobat PDF reader

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

10 reviews

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These tubes are remarkable for money and last a long time.

It should be noted that although they work well in an amplifier designed for EL 34's they are constructed differently.

I like them


Excellent in Orange Rockerverb MKIII


These have been fantastic tubes, and I absolutely love these in my Orange. I'll be sticking with these instead of the EL34's I was using before.

Mini Silver Jubilee? get these!


These were recommended by others for use in a Marshall Mini Silver Jubilee. Excellent, just what I was looking for. Gives the amp more of a Big iron sound like the original Jubilee series.

Classic Rock Tube


Have a octet of these in my Primaluna Dialogue HP amp. Much more high and mid information with a tighter low end than the EH EL34's. They took about 50 hours to really come around, but worth the wait. A bargain price with performance that shines, at least in my hi-fi amp. Been running them 10+ hours nearly daily for 8 months - no problems at all & sound great. A unique sounding tube, I listen to classic rock from cd-sacd's with PL Dialogue Premium tube pre-amp & Aurum Cantus M102SE's with ribbon tweeters and they just SING & POP! I've tried KT88's & 6550's and these IMO sound much more balanced & musically satisfying. I've been told these are mainly for guitar amps, but in my system they have found a home. Check 'em out in your hi-fi rig, I think you'll agree. by the way, the preferred series 5AR4 rectifier tubes are excellent in my pre-amp, best I've tried! Mike

It’s like an EL34 and 6550 had a baby and that baby kicked all sorts of ass.


Beefy, full tone. Brought my amp back to life.