The Ibanez Tubescreamer is one of the best overdrive pedals ever produced. The TSA15BK tube combo amp features a true Tubescreamer circuit and a 12-inch Celestion Seventy80 speaker. Ibanez Tubescreamer amps can create natural clean sounds, fat crunch tones, and even warm smooth overdrive tones with the modified TS9 circuit built right into the amp. Guitarists normally have to depend on a separate effect pedal to get the distinctive, warm overdrive sounds of a tube amp. No more! The new Ibanez TSA15BK Tube Combo has a genuine Tube Screamer circuit, built right into the front end, for all the warm tube overdrive punch and crunch you'll need. Includes foot-switchable function, with Tube Screamer Overdrive, Tone, and Level controls.