Contextual Info: Ordering number : EN5662 Monolithic Linear 1C LA4592W ISA W O l 1.5-V Preamplifier + Power Amplifier for Headphone Stereo Products Overview The LA4592W is a single-chip 1.5-V headphone stereo system IC. The LA4592W adds a variety o f functions, including a switch amplifier for end product audio quality