Phoenix Gold ZLOC4.4 ZD Series 4 Channel Converter Including Bass CubeZLOC4. 4 The 4 Channel ZLOC4. 4 Converter is the essential solution for enhancing your vehicles audio system. While many vehicles now come with integrated amplifiers, the original OEM system often falls short in terms of performance. The 4 Channel ZLOC4. 4 Converter emerges as a game changing solution, bridging the gap between OEM systems and aftermarket audio components seamlessly. Its primary mission is to address the inherent constraints of factory