Profile: XP Audio, Inc. is a manufacturer of sound equipment and musical instruments. Our brands include Motion Sound™, Forge™, Bolt™, Morpheus™.Our bass tube preamp head has low cut with 20Hz to 80Hz frequency select and in & out switch with LED indicator. The MS-360/1 series 360-degree powered keyboard speaker is omni-directional, allowing it to recreate the room-filling sound of the original keyboard, such as a grand piano, acoustic guitar and organ, as it is heard in an un-miked live setting.