LS1a The LS1a offers our LS1 series quality at a reduced price. All LS1s embody our vision that ultimate sonic transparency can only be reached by integrating all components of the playback chain into one system. Only then, we have full control over the interaction of electronics, loudspeaker units and the acoustic behaviour of the cabinet. Grimm Audios deep knowledge about circuit design and component choice can then be optimally exploited. The LS1a possesses all the essential qualities and therefore performs at a true reference level in all key areas.