I am selling this item to organize my collection. Operation has been confirmed on all functions except REC. It is a Class A amplifier from Luxman, and it produces a clear and pleasant sound. The exterior is in excellent condition, with virtually no scratches, stains, peeling, or cracks. Also, most used items have the bronze color of the dials faded due to aging, but this unit retains its beautiful color. It is a simplified version of the 570, with a turnover function, allowing you to enjoy your preferred sound. I believe it's rare to find a unit that maintains this kind of appearance and functionality. I hope that a LUXMAN fan who is looking for this item will take it over.