The AH4X4 is designed to be used for everything! Gigs, parties, conferences, at home, work, indoor events, outdoor events, the list is endless. You’ll never have a dull moment, connect your music via Bluetooth! Enjoy up to 24 HOURS of continuous battery power use! The Intelligent Power Management can switch between Regular and ECO power modes to get the upmost performance usage from the batteries: 3 x Lithium ION cells or 8 x AA batteries can be used. Alternatively, the AH4X4 can be used direct from a power supply where mains power is available. The AH4X4 is the perfect solution, meticulously designed for the ease of use you need, just plug in and go, wherever you may be, you will know that the AH4X4 will meet your demands.