I'm decluttering. No issues with sound. There are no noticeable stains. It has enough volume for use in a gymnasium. The included accessory is the power cable. There is no instruction manual. - Brand: Hartke - Model: A35 - Functions: BASS, MID, TREBLE, BRIGHT, LIMITER, CD, PHONES - Handle: Top handle Shipping will be via Yamato Takkyubin. Thank you.