This is a small bass amplifier from Hotone. It's designed based on the sound of the Ampeg SVT. It has a 5W output, but because it's a class AB circuit, it has a different harmonic output compared to modern class D amplifiers, which is appealing. It also has a headphone output and AUX input, so you can use it for practice even without connecting to a speaker. I also used it for practice and as an effects unit or preamp. Although not this specific unit, the only downside of this series of amps is the popping noise that occurs when the power is turned on. The reason for selling is that I've upgraded my equipment. The condition of this unit is that it has only been used indoors and has no major scratches or stains. It comes with the original box and power cable.