Unique cable construction with unbreakable connectors! Pulse Sound Engineering. Pulse Premium Series is designed with PSE Connector Technology – a connector technology specifically developed by Pulse engineers to endure heavy use over long periods. The strain relief on the connectors is molded in one piece, which protects the cable and guarantees a long lifespan. The design and choice of components have been made with care to ensure these cables remain reliable even after long-term use. The cable is soft and flexible with signal conductors and shielding made of OFC (Oxygen Free Copper). Dense, effective copper shielding eliminates interference. This technology ensures an exceptionally clean and interference-free signal.