M665 features a retro chrome look reminiscent of the classic Shure 565. The M665 is similar in overall response to the M650, except the abrupt rise from 1 to 2 kHz in audio response on the M665 does not occur until after 2 kHz. Overall, this microphone has a little bit less higher frequency audio output plus a slightly flatter response from 100 Hz to 2 kHz than the M650. Similar to M650, but with less high-end punch and slightly better overall frequency response. Unique cardioid dynamic unidirectional element. Built-in spherical breath and pop filter on the element. Sounds great! $69.