Groove Tubes GT-E34L-S Quartets (Rated 1-10)

BRITISH AMP TONE 101
The original power platform behind most high-powered British guitar stacks from the '60s onward. Output is generally between 20 and 25 watts, with pronounced mid-range punch, tight low end and crisp top end that breaks up relatively smoothly and gets a little crunchy when pushed hard. It provides a great voice that stands out in a band mix as the mids tend to power their way through an overall mix. Big brother to the EL84.

FEATURES
Quartet of E34L-S tubes rated from power range 1-10
Each quartet is matched and biased to a specific output level (R2, R7, etc.)
R1-R3 = Low: Early distortion, wide range, softer attack good for Rock and Blues solos.
R4-R7 = Medium: Normal performance, great dynamic range/attack and best all around rating type for all styles of playing
R8-R10 = High: Most dynamic range, most clean power/less break-up for power players, Jazz and bass amps