Groove Tubes E34LS Tube Quartet (EL34)

This long-lasting tube boosts your sound giving you maximum tone and power. It's perfect for the modern rock guitarist.

This exclusive GT design features special "heat wings" attached to plate for more power, longer life, and better tone. The 1st choice of Matchless and many pro players including Billy Gibbons, Joe Perry, and Joe Walsh, these tubes are very dynamic, and produce a big bottom. The most powerful in their class.

EL34 Type (typical power ranges from 25 to 38 watts)

This is the Classic pentode power tube used in Marshall, Hiwatt, Laney, and similar Euro type amps. These tubes have a big bottom and a crisp top end that get crunchy when pushed hard. It also has sort of a hollow midrange response. These are the choice of the modern rockers, a la British Rock and Heavy Metal.

The Groove Tubes Warranty

Preamp tubes: Warranted to be free of burn out, excessive noise, or microphonics for 180 day from date of purchase.

Power tubes: Warranted to be free of burn out for 90 days from date of purchase. If one tube fails, the whole set will be replaced to ensure proper matching.

GT-Solid Rectifiers and Substi-tubes: Warranted for 3 years from date of purchase.

Dimensions and Weight in Packaging
Base Item
Shipping Weight: 1 lbs
Shipping Dimensions: 7 x 4 x 4 in
Manufacturer Part Number (MPN): 5550113548

For support or warranty questions, please contact the manufacturer:
Phone: 800-459-5687

Reviewers gave this product an overall rating of 5 out of 5 stars. (12 ratings)
Submitted October 9, 2007 by a customer from

"New amp for 100USD"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
If you have a Matchless-you need these.....
My Matchless Chief has a new life. The original tubes-which were also Groove Tubes of the same model were spent. Nine years was way too long-I bought the amp on eBay and thought-my VHT blows this away-now with the new tubes-it's the other way around. What tone! These need changing on a yearly basis if you play out or play a lot.
What can you say-it's not about features-it's about tone....
Ease of Use
Plug and play-
I'm going to put as many miles on these as I can-then buy a new set. I'll save the trouble and buy a new set now.....
Expensive-so was the amp

Musical Background:

professional musician, recording engineer

Musical Style:

rock, blues, jazz, country, what pays
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