2020 Editors’ Choice: Power Amplifiers $10,000 – $20,000

Air Tight ATM-1S $10,000 JM has been delighted to have this stereo tube amp in her reference system. No matter what style of music she played, no matter what speakers she paired it with, the Air Tight ATM-1S delivered the sonic goods with naturalness, beauty, and ease, while also throwing a remarkably deep and wide soundstage. This 60Wpc stereo amp also proved to be more versatile than expected, driving a remarkable array of loudspeakers—from Air Tight’s Bonsai single-driver stand-mounts to Monitor Audio’s Gold 300 floorstanders and Platinum PL500 flagships (at reasonable SPLs)—to great effect. A creation from the celebrated Jap-anese …