For a semi-acoustic guitar, there are a lot of manufacturers that would help you get the best amplifier. However, if you want to have your hands on some of the best, then we ask you to have a look at amplifiers produced by Boss, Fisherman, Fender, and Yamaha. They are some of the best amplifier manufacturers. So, have a look and check at their amps, and you will find the best out of the rest.