Pair of mid power GT-6L6-CHP Groove Tubes, often used in Fender amps. Its response is round, with a pronounced mid range character. It's a bright, clean sounding tube with punch. Perhaps the most recognized guitar sound in all styles from the 1960s onwards. These Groove Tubes have a unique black plate design (carbonized nickel) with wings to dissipate heat. High performance design, offers 30 watts (standard for 6L6 is 20-25 watts).