It's sneaky great. My American Sound is my "amp". I put it in one of the effects loops of my Line 6 HX Effects so I can use comp/drive/wah/some modulations in front of it and delays after. On a related note, I can't recommend Joyo's Cab Box enough as a complement to the American Sound (or any of Joyo's "amp in a box" pedals). The American Sound's "speaker sim" is more like a gentle EQ curve rather than an actual cabinet simulator. Pairing it with an actual cabinet-power amp-and-mic simulator and IR loader like the Cab Box makes the American Sound a bona fide preamp on par with preamps that cost hundreds more.