The item pictured is a Pignose Legendary 7-100 portable guitar amplifier. It is a 5-watt portable practice amp known for its distinctive sound. The amplifier features a single volume control that also acts as the power switch. It is powered by six AA batteries or an optional 9V AC adapter. The case can be opened to access the speaker, which can be used to create a wah-wah effect. A preamp output jack allows the amp to be used as a preamp for a larger system or recording console.