The HeadAmp Blue Hawaii electrostatic amplifier is a terrific match with the Dan Clark Audio Corina. The sound seems more realistic than with dynamic headphones. There is a wide sense of space, focused presentation of instruments, and a timbre closer to live instruments. The Blue Hawaii has plenty of power to drive the Corina, and the build quality is exceptional. Beware this amp and power supply generate a lot of heat, so plenty of space is required. I'm very happy with my purchase from Bloom Audio.