I consulted with the staff and purchased this at the Oyaide Denki store in Akihabara. When I connected it to a digital guitar amplifier and played, the sound became louder, and the sound quality clearly changed. However, because it's not the sound I prefer, I will dispose of it. Length: 1.1 meters (excluding terminals) The cable is thick and stiff, so I think the actual usable length for wiring will be shorter.