Heil Sound Pro Set 3 Headphones

The Pro Set 3 is a closed-back dynamic headphone built for podcast, recording, front-of-house, monitor, and broadcast work, where audio clarity and a balanced frequency response matter more than a consumer bass boost. Its 40 mm neodymium drivers deliver a wide 10 Hz to 22 kHz response with 102 dB sensitivity.

A phase reversal switch is the feature that sets it apart: engaging it runs the speakers out of phase, which reduces listener fatigue on long sessions and helps a live engineer monitor accurately in loud, noisy environments where phase cues can mask problems. The cable terminates in a 1/8 inch plug with an included 1/8 to 1/4 inch adapter, and the whole headset weighs 198 grams.