Here's an affordable rechargeable amp that we like for acoustic instruments. The Aroma AG-40A is a rechargeable amplifier that also doubles as a micro PA and monitor. Compact with a clean design the AG-40A features an 8-inch full-range speaker that gives your acoustic and vocal a natural sound as well as built-in rechargeable lithium battery so you can take it on the road with you.
A handy indicator on the back lets you know how close the battery is to empty so you'll never get caught short-handed and it also features a top-hat insert so you can mount it on any standard PA speaker stand. This amplifier has two inputs so you can plug in your microphone and guitar at the same time, perfect for regular gigs as well as busking outdoors. The guitar input has a pickup selector button so you can adjust depending on if you have active or passive pickups. The Microphone input has both regular jack as well as XLR inputs so you're ready for any situation.
You also have Aux In and Outs if you want to add anything additional and alongside the built-in CSR Bluetooth 4.0 functionality this amp gives you a plethora of options for connectivity. The Guitar channel has Volume, Bass, Treble and Reverb controls for tonal sculpting of your acoustic and these are matched on the Microphone channel to give you complete control over your sound. The Notch settings are designed to help you fight feedback which is a really useful feature, as experienced players will know when playing live hollow body guitars are prone to causing feedback at high volumes.
Great video review here from Dawsons in the UK: