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Vacuum Tube - 6L6, Electro-Harmonix

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Item ID: 004727
Starting at: $21.75
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Superior power Beam tetrode with large plate dimensions and improved grid structure for increased power handling capabilities. Excellent tone and performance compared to most other 6L6 or KT66 types.

  • Modeled after the vintage RCA 6L6GC "blackplate"
  • Mica spacers with metal springs eliminate tube rattle and microphonics
  • 5881/KT66 equivalent
Apex Tube Matching
Matched versions of this tube use Apex Matching
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Apex Matched PairT-6L6-EH-MP609722128414
Apex Matched QuadT-6L6-EH-MQ609722128421

RoHS Compliant

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Specifications, Files, and Documents

Product Reviews

5.00 out of 5 based on 6 reviews
5 out of 5

Excellent tube, finished my restore

- October 31st, 2018
5 out of 5

CE did the responsible action to replace a quad set when one tube lost a heater. In fact, they also replaced free of charge a second time when a heater went out again on the replacement set. Good service, peculiar incident.

- June 1st, 2017
5 out of 5

Very good

- February 10th, 2016
5 out of 5

Product meets with my expectation. I was looking for detail, warmth and responsiveness. I picked the 6L6 as substitute for the stock EL34 on my amp which lacked those characteristics particularly on the clean setting. The first brand of 6L6's that I picked up however developed this noticeable "rattle" after just a few hours of playing. This only shows up when particular notes were played on the guitar and was not present when I put the EL34's back. After some research, I decided to go for the EH brand 6L6's because of the internal construction that looks like it specifically addresses the problem I was having, in addition to it's ability to reproduce the notes exactly as I wanted; warm and detailed. So far I have not been disappointed. The valves reproduce the notes just as I expected across the fret board without introducing unwanted sounds.

The Tech Corner on Antique Electronic Supply website was a great resource that helped tremendously in the decision making process.

- July 20th, 2015
5 out of 5

This has become my universal go-to 6L6GC , and the reason is simple , Russian power tubes just seem to be more robust , and they handle higher voltages than Chinese or even JJ's . I'm guessing the Groove Tubes California made new/old GE version is superior , but costs considerably more.

- February 4th, 2015
5 out of 5

Love EH power tubes

- November 26th, 2014

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