I purchased this new and used it a few times. I used it by connecting it to the effects loop in the same way as a regular effector. It's called "Micro Drummer," but the sound is more like a click track. It's a good product as a rhythm trainer because it offers a certain degree of freedom in pattern and tempo settings. No box or warranty. The item in the photos comes with an aftermarket AC/DC adapter. I am selling this as an individual, so I cannot accept returns or exchanges. Please understand this beforehand. - Model Name: Micro Drummer - Color: Black - Controls: Volume, Tempo, Tone, Speed - Input Terminals: 1/4 inch jack - Output Terminals: 1/4 inch jack - Power: DC 9V