Proel DHPA115 3.5mm Jack Female (Stereo) - 3.5mm Jack Male (Mono)

It's a stereo to mono converter if you're going in...or a mono to stereo (dual mono) splitter if you're coming out. In other words...the mono 'tip' combines with the stereo 'tip and ring'. For those who are unsure, this adaptor does NOT take a balanced jack signal and put it into an unbalanced connector correctly. Metal construction with ABS covering. 6.3mm Jack Female (Stereo) - 3.5mm Jack Male (Mono).