Groove Tubes 6L6 Duet (Russian)

For an aggressive classic rock sound, the 6L6 Duet is your tube. It's the tube of choice for most medium-powered Fender amps.
A medium-output power tube (generally 20-25 watts) often used in Fender professional amplifiers including the Fender Bassman, Bandmaster, Concert, Dual Showman, Hot Rod Series, Pro Series, Super Reverb, Tremolux, Twin, Vibrolux, Super-Sonic, Blues Deluxe, Blues DeVille and others. Available in many variations, its response is round, with a pronounced mid-range character; strident and chesty with a super-bright and clean, powerful punch. Perhaps the most recognized signature tone for U.S. guitar music of all styles from the '60s onward.


- Made in Russia
- Medium Output Rating
WARNING: Cancer and Reproductive Harm -
Dimensions and Weight in Packaging
Matched Duet
Shipping Weight: 0.5 lbs
Shipping Dimensions: 7 x 5 x 3 in
Manufacturer Part Number (MPN): GRO 6L6BD
Groove Tubes Warranty Groove Tubes offers a warranty of six months on all preamp tubes and three months on all power tubes.
If you have additional warranty questions, please contact the manufacturer at 800-459-5687
(10 ratings)
Submitted March 31, 2004 by a customer from
"If you own a tube amp you owe it to yourself to try Groove Tubes as an addition to your over all TONE TUBE SETS!!!!!!!"
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Wish I had a brochure of all the products so I would know what other products I could purchase
It sounds just like it was graded to be. It will never be an RCA BLACK PLATE or an old 5881 because it can't. Good for old rock sounds. I use Fender Twin reverb 1973 and a 1484 Silvertone Twin Twelve 1965 Not sure of what will make it better but the system works on grading and that is all it supposed to do and give you better and more consistent reliability and it DOES just that!
Purchase a variety of grades for compression. I wish you could purchase these at more local shops for a decent price. I wish you could purchase mixed hardness sets for a variety and a price break. I wish it had the wattage capability for the tube set you buy.
Great guarantee, best in the business period! Product in perfect condition each time you get them.
Compared to the new old stock, you are really just paying for warranty, service and consistent quality grading. Most of the tubes are made in russian and china, they are tightly tested and graded so the customer does not take a risk.. GREAT IDEA!!
Manufacturer Support
GT is the best to deal with when it comes to tube purchases period. No JUNK ALLOWED the others are I hope I get lucky and get a good set and hope they last and sound good. With Groove you know what you are getting.
The Wow Factor
Great look, everything about a tube you could want labeling is perfect, it shows the quality dedication to the actual product.
Musical Style:
All styles, self styled guitarist, instrumentalist guitar player-Classical, Jazz, rock , heavey,
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