The Katana 100/212 supports 55 sweet BOSS effects, and you can load up to 15 of them for instant access. The amp's Booster/Mod, Delay/FX, and Reverb controls give you easy one-knob access to each effects type, with a color-coded button to switch between preset effects. To completely customize your effects and amp settings, connect the Katana 100/212 to your computer via USB and load up the Tone Studio software. Create your own setup, or download setups created by pro guitarists at the BOSS Tone Central website. Best of all, the Katana 100/212 can store two custom amp and effects setups for instant recall, effectively making the Katana 100/212 a versatile two-channel amplifier.