I'm selling a used Chinese clone model F M155 preamplifier. I've used it for about a year, and it's in excellent condition with hardly any scratches. It's a line preamplifier with four inputs. It's well-built and always operates stably. It's a 115V model, but it worked fine with 100V. I think it pairs well with small vacuum tube amplifiers and transistor amplifiers. The sound quality is a matter of preference, but it's the type that expresses sound with rich colors. Accessories include a power cable (115V) and a power adapter cable. There is no original box, so it will be packed in cardboard for shipping. As stated in the description, please understand that this is a clone model before purchasing. Thank you for your interest.