For the last 25 years, legendary electrostatic loudspeaker manufacturer MartinLogan has been refining the hybrid design of its speakers, which typically feature a curved electrostatic panel mated to a cone woofer. The newest evolution of this design, the Montis, manages to achieve flagship-grade audio quality—thanks to technologies borrowed from the company’s famed ESL line, which includes the $24,495-per-pair CLX—in a more compact package that looks as salient in an art gallery as it does in the finest listening room.