Not everyone can afford to own a roomful of amps. As guitar players we own one or two, and use them mostly at home. Now with Amp Simulator pedals you can try out all kinds different amps and guitar combinations without the neighbors complaining and your back hurting from lugging all those amps around! Amp Sims are designed to be plugged directly for recording or into a live PA system. They are meant to simulate a real amp, and the Joyo models are getting great reviews. Lots of customers are plugging them in direct or even putting them in front of their existing amps. Inexpensive and excellent sounding, they just make sense.