Woo Audio

Grado Signature HP100 SE

The Grado Signature HP100 SE is an open-air, dynamic over-ear headphone with individually machined, specially treated aluminum housings in a space grey finish and G-cushions. Its newly engineered 52 mm drivers use a paper-composite cone, rare-earth-alloy high-flux magnetic circuit, and lightweight copper-plated aluminum voice coil; rated performance includes a 3.5 Hz–51.5 kHz frequency response, less than 0.1% THD at 100 dB, 117 dB SPL/1 mW, and 38-ohm nominal impedance. It features a redesigned padded headband with stainless steel height rods, 12-conductor detachable cables using 4-pin mini XLR headphone connections and a 6.3 mm source plug, and is hand-assembled in Brooklyn, USA.