Thank you for viewing. This is a VOLUME ADJUSTER - didi 02Type with screws, a mute and volume control device from Fue Kobo Aihara (Aihara Flute). I purchased this beautiful item with only a few uses, but I have never had the opportunity to use it, so I am offering it for sale. There are no particularly noticeable scratches, but please understand that this is a used item. No claims and no returns accepted. The purchase price was 25,000 yen at the time. How about it for soundproofing?