I am selling an audio-technica AT-SL37 OPT optical digital selector. This selector allows you to connect optical digital cables in a "3 input → 1 output" or "1 input → 3 output" configuration and features a locking mechanism. The unit only, no box or manual included. There are no noticeable scratches or stains, but please understand that this item has been stored at home before purchasing. Brand: audio-technica Model: AT-SL37 OPT Input/Output Terminals: Square optical jack x 4 Weight: 170g External Dimensions: H approx. 28 mm x W approx. 135 mm x D approx. 83 mm *Passive type, no power supply required #audio_technica #audio_technica #selector #optical_digital_selector #audio #cable