Korpa 
A medium-output power tube (generally 20-25 watts) often used in Fender® professional amplifiers including the Bassman®, Bandmaster®, Concert, Dual Showman®, Hot Rod™ Series, Pro Series, Super Reverb®, Tremolux™, Twin Reverb®, Vibrolux®, Super-Sonic™, Blues Deluxe™, Blues DeVille™ and others. Available in many variations, its response is round, with a pronounced midrange 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.
Great dynamics and a very sweet, punchy tone with enhanced power rating and performance. More brilliant top end and a very full, pronounced and round low-frequency output. A solid replacement for stock performance.
Features
Matched duet or quartet of 6L6-S tubes rated medium power range
Power output of roughly 20-25 watts
Bright and clean with a powerful punch
Used on many classic and modern Fender amplifiers
Made in Slovakia
