Our well-known and proven USB SERIES has now been fundamentally revised. The active under-seat subwoofer series, which has been successful since 2013, impresses with its small dimensions and yet powerful bass performance! Our USB series has developed into an extremely popular bass retrofit and has become a real problem solver in terms of bass, especially in the old & youngtimer and camper sector. The revised die-cast aluminum housing is equipped with the new ETON Stealth design and now offers even more rigidity and better cooling performance, while the driver, which has been revised in terms of efficiency, also ensures even more sound pressure!