Warm Audio WA-2A Opto CompressorThe WA 2A is a high voltage, Class A opto compressor, using large core CineMag USA Transformers, four premium vacuum tubes, and the legendary Kenetek opto cell Though digital technology and software have made great strides in recent years; we still believe that nothing compares to the level of articulation, depth, realism, and responsiveness of a well built piece of analog gear. When you hear the bottom end presence and top end detail of quality