Built-in Tube Screamer circuit injects classic stompbox distortion and drive into your ampAll-tube amplification combined with a genuine Celestion speaker provides timeless toneDual-mode power switch lets you drop down to 5-watts for small gigs, recording, and moreBuilt-in Tube Screamer circuit injects classic stompbox distortion and drive into your ampThe TSA15 gives you the sound of real TS9 Tube Screamer distortion/overdrive pedal built right into its preamp section. Why put a tube-style distortion effect in a real tube amp? Actually, the ultra-popular Ibanez TS9 Tube Screamer is one of the few distortion stompboxes you’ll find in front of tube amp stacks played by major-league guitarists. That’s because it sounds great and does a phenomenal job of pushing tube amps past the breakup point. Add to that a built-in 6dB boost switch, you can instantly launch the TSA15’s Tube Screamer tone into high gear for even more classic overdrive goodness.All-tube amplification combined with a genuine Celestion speaker provides timeless toneIgnore the built-in Tube Screamer circuit for a second and simply consider the Ibanez TSA15 as a tube guitar amplifier. What you’ll find is an all-tube design that combines a pair of 12AX7 preamp tubes and a pair of 6V6 power tubes – a tried-and-true recipe for classic tube-amp tone. Now add in the TSA15’s 12″ Celestion Seventy80 speaker, and you couldn’t ask for a more classic style of guitar amplifier.Dual-mode power switch lets you drop down to 5-watts for small gigs, recording, and moreThe Ibanez TSA15’s dual-mode power switch lets you get full tube-amp sound at manageable volumes. In addition to its regular 15-watt pentode mode, this features lets you drop the TSA15 into 5-watt triode mode. At five watts, the TSA15 gives you the perfect volume for playing smaller venues, practicing, and recording. More importantly, it also drops your headroom, so you get the same tube breakup and overdrive as you would if you were playing at the full 15 watts, only quieter.Ibanez TSA15 Tube Screamer Series Combo Guitar Amplifier Features: