Solid and consistent performance; very sturdy and reliable. AKA 5881.
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®, TremoluxTM, Twin, Vibrolux®, Super-SonicTM, Blues DeluxeTM, Blues DeVilleTM 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.