Unused, new Naturverb for acoustic guitars. I've used the Naturverb for classical guitars, and as the name suggests, it provides a natural reverb, making playing more enjoyable. I acquired this one for use with steel-string guitars, but I've since obtained a smart guitar, and the ease of use has reduced my frequency of playing traditional guitars. I don't anticipate using it in the future, so I'm putting it up for sale. It's unused and new, so the outer box, instruction manual, and coupon are included. Shipping is free. Thank you.