The IK Multimedia iRig Micro Amp Battery-Powered Guitar Amplifier has a surprising amount of power. It’s louder than you think it will be, and it also has three custom-voiced analog channels. These include clean, drive, and lead to give you the sound you really want. This guitar amp is also super easy to use because you can connect it to your smartphone. Using the AmpliTude CS app, you get access to ten amp and 26 stompbox models. If you use AmpliTude 4 on your computer, this portable amp provides nine amp and ten stompbox models. And you’ll be surprised at the sound coming from this battery-powered amp. When it’s on batteries, it emits 7.5W sound. However, when you have it plugged in, it can be as loud as 15W RMS. That’s pretty impressive coming from a single four-inch speaker.