YAMAHA CH-10M 中古 Chorus Effect Pedal Functionality confirmed. This chorus effect has a subtle sound. Depending on the settings, it can also produce a phaser-like or tremolo-like atmosphere. It's not flashy, but unlike recent digital modulation effects, it has the unique character of analog. BOSS effects from this era are, of course, excellent, but YAMAHA's effects are also wonderful and it's a mystery why they aren't more popular. I'm selling this as part of a decluttering effort, as I own another one. The rubber sheet on the back, covering the battery compartment, is missing. There are traces of sticker removal on the surface with the power jack, and some adhesive residue remains. In addition to the above, there are many scratches. This is a very old item from around 1980, so please check the images and consider purchasing only if you understand that it is an old, used item. Functionality has been confirmed, so there are no issues with use, but since it is old, I will consider it as junk.