For the past few years I've been listening to many products from Line Magnetic through many different sets of speakers. And although these amplifiers are versatile enough to drive almost everything, they always sound better paired with high efficiency speakers.
I owned the big LM219ia and it was connected to Zu Audio Omen Def most of the time. Other good matches that I experienced (my own and at friends and dealers places) were with Omega speakers, Audio Note, Reference 3A, ATC, Tannoy and DeVore. But the brand I've seen more times associated with Line Magnetic amplifiers is Zu Audio.
I owned the big LM219ia and it was connected to Zu Audio Omen Def most of the time. Other good matches that I experienced (my own and at friends and dealers places) were with Omega speakers, Audio Note, Reference 3A, ATC, Tannoy and DeVore. But the brand I've seen more times associated with Line Magnetic amplifiers is Zu Audio.