Monster MCL MST2MF Dual 1/4 Mono Female to Single 1/4 Stereo Male Cable Adapter (Discontinued by Manufacturer) Y-Adapter designed to link 1/4 St Male to (2) 1/4 Mono Female 24K gold plated connectors to minimize corrosion Exclusive rugged molded strain relief for lasting protection even after repeated use Features die cast barrel and protective shielding to block out RF and electrical/electromagnetic interference Advanced construction includes high-purity copper content