The B1 bass module is a compact, lightweight enclosure that is easy to transport, set up and break down. Its small footprint takes up considerably less space than traditional bass cabs required for same performance. Interlocking feet let you securely stack up to four modules together on their sides. This powerful bass enclosure adds depth and impact to such instruments as bass guitars, drums, and low voices. Low-pitched wind or string instruments, guitars and keyboards can also benefit from the additional low-end output the B1 provides. Includes cable to connect module to power stand and slip cover. The B1 is compatible with Bose L1 models I, II, and 1S.