This is a small Eden-made bass amplifier, the Micro Tour. It may already be discontinued. The AC adapter is not the original, but a general-purpose one, though it has sufficient capacity. (15V x 0.4A = 2W) The AC adapter cord is 1.8m long. It can also be battery-powered. It uses a lot of batteries, 8 AA batteries. It's sufficient for home practice or small live performances. A compact and portable mini amp with volume and tone control. - Model Name: MICRO TOUR MINI AMPLIFIER - Input: INPUT - Volume Control: VOLUME - Tone Control: TONE - Headphone Jack: HEADPHONE Thank you for looking.