Keyboard amplifiers have different applications. On the one hand, they are used to support the often very small internal speakers, but on the other hand, they can also be used to make keyboards or synthesizers that do not have internal speakers audible. The size and power of the keyboard amplifier depends on the area of application. For the living room at home, a small and compact version is certainly sufficient. But if a keyboard player wants to hold his own in the rehearsal room or use the amp as a monitor on stage, the power and speaker size should be somewhat larger. The Leslies from Hammond, which are used almost exclusively for amplifying vintage organs, occupy a special position. Of course, we have Hammond Leslies in our programme as well as keyboard amplifiers from Korg, Laney, Roland and Yamaha.