For sale: TRIAL SINGLE INPUT PREAMP. I purchased this used six months ago at a musical instrument store in Shibuya. I only tested it about twice in the studio, and haven't used it since. (Never used live) Operation has been confirmed, and it works without any crackling or noise. You can use it without any problems. This is a sale of the main unit only, and there are no boxes or accessories. Also, there are traces of Velcro on the back of the unit. Although there is a general feeling of use, there are no problems with the operation. Please purchase only if you understand that this is a used item. If you have any questions, please feel free to comment. Type... Acoustic Guitar