The Whirlwind HATT-AES is an active headphone amplifier that converts a digital AES3 stream into a high fidelity, low distortion stereo headphone signal optimized for modern 32 Ohm headphones. Sample rates from 32 kHz to 192 KHz are recognized by the HATT-AES D/A converters. Features include an analog 3.5 mm TRS stereo input jack, analog signal present LEDs, and a buffered AES loop-thru output.