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-ECC83S preamplifier tube represents the vintage "Euro" type tube, with medium to high gain and a linear frequency response. The GT-ECC83S offers a completely clear, even tone with good bass character. This tube type was long used as standard gear in Marshall and Vox amps. For those who change first stage gain preamplifier tubes to change the character of their amps (remember, this can be done in less than a minute without tools, adjustments, or a "tech"), the GT-ECC83S is definitely a must-have.