This is the Lyra, a DI and preamp for acoustic guitars made by Playtech. I recently purchased it used and have only used it at home, but I am selling it due to various circumstances. It's used, but it's in like-new condition with hardly any scratches. Overall, I think it's a very well-made effects unit. If you're looking for a good, affordable preamp, how about this one? Operation has been confirmed with both batteries and an AC adapter. In addition to the main unit, the original box and instruction manual are included. Thank you.