Thank you for viewing. This is a used, near-mint 3.5mm analog audio selector from SONY. I used it about 4-5 times after purchase, and it has been stored since then. I have confirmed that audio input and output are possible on all terminals. As this is a used item, there may be scratches and scuffs from normal use. Please check the condition in the photos. Due to the age of the product, it is sold without warranty. An AUX cable is included as a bonus. Everything in the photos is included, and there are no manuals, etc. Please consider this with your understanding. - Brand: SONY - Model: SB-A40 - Number of input terminals: 4 - Number of output terminals: 1