Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mono splitter, not described as such

Be careful with this item. It splits the left and right channels instead of providing stereo through on both inputs. Fortunately I can find another use for it, but I imagine most people won't. If you're looking to bounce a signal out to two sets of headphones or another stereo application, look for something that is specifically described as a stereo splitter.