GearNuts Essentials Make Your Axe Rock!

Just so you know: the Groove Tubes tubes and sets we sell are all "Mediums." That's in the 4 to 7 range on Groove Tubes' scale. Sorry, we cannot take returns on tubes.

Groove Tubes has been manufacturing, importing, and grading quality power tubes for two decades. No stranger to GearNuts, Groove Tubes founder and energy source Aspen Pittman has paid us numerous informative (and always entertaining) visits through the years. His tireless pursuit of perfect tube tone has resulted in Groove Tubes' reputation for consistency and premium quality. Want proof? Fender tube amps now include Groove Tubes as standard toys, and true tube aficianados worldwide swear by the tubes and pro audio products Groove Tubes makes. For premium tube tone, go with Groove Tubes!

The GT-E34LS Power Tubes Duet features an exclusive Groove Tubes design with special "heat wings" attached to the plate for more power, longer life, and better tone. This E34 has a big bottom, and it's totally dynamic in addition to being the most intense tube in its class. The GT-E34LS has an exclusive specially modified power pentode with 15 percent more power and awesome overall tone. Big heat sinks attached to the plates keep this one from "sagging" at full power, keeping the bass tight and treble crisp. It's the choice of legends such as Billy Gibbons, Joe Perry, and Joe Walsh. This is the group of two, also sold in groups of four.