Incredible sounding Amp !!! The stereo effects are almost surrond sound - and the amp modelling is PERFECT. MP3 input lets you download from the on-line library of tones, jamalong inputs. Check the price, specs and reviews on Amazon and Sweetwater. AS NEW condition. These units sell for $ 150 on amazon - why wait a few days and spend $ 50 more ?? ( ONLY reason I am selling is I am a stagehand with no work. )