MK Powered Keyboard, Piano For Schools, Church, Studio MK-182 - Black. MK Keyboard, Piano For Schools, Church, Studio MK-182 This is the new large multifunctional keyboard of the MK keyboard series. The keyboard features a modern design with great surround sound thanks to the new technology of the 2 way speaker system. It also has a usb input so that we connect the music in mp3 format. It has an in set: organ; music stand,