Mini diffuser for ampLUG turns any of the VOX amPlug "headphone amps" into a mini-stack AMP table! - Output power: 0.7W - Speaker: VOX Original 3 x 1 - Power supply: 9V battery (6F22, 6LF22/6LR61) or AC adapter (sold separately) - Power consumption: 55 mA - With alkaline batteries: about 10 hours - With zinc carbon battery: about 3 hours - Dimensions (L x W x H): 96 x 56 x 103 mm / 3.78 x 2.20 x 4.06 inches - Weight: 296 g (without battery) / £0.65 - Accessories included: 9V Zinc Carbon (6F22) - Option (sold separately): 9V AC adapter - NOTE: AC30 in the photo is for demonstration purposes only and is not included