I am selling this speaker selector because I no longer need it due to reorganizing my equipment. I have changed it from a bundled sale to a single item. It's convenient for switching between speakers. Sometimes the contact in the A/B switch section is poor, and the sound on one side may be low, but it works fine after clicking it a few times. I used it as is. Therefore, it is considered a junk item. *Returns are not accepted.* NFJ Speaker Selector