Matched pair of 6L6 tubes in "Medium" power range. 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, 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. Exclusive GT design. This black-plate (carbonized nickel) design features extended heatsink wings. Has strong and focused output, and is highly recommended for enlivening any stock Fender or Marshall that uses a standard 6L6. High-performance design delivers 30 watts, with very high performance/headroom. An outstanding replacement for any tube amp with 6L6 power tubes.