AKG HP4E 4-Channel Headphone Amplifier

4-Channel Headphone AmplifierTHE IDEAL COMPACT HEADPHONE AMP For small and medium studio applicationsThe HP4E professional headphone amplifier features two stereo input and four stereo output channels of high-quality audio. Designed for ease of use, convenient switches on the front plate enable you to select your designed input. Each channel features both a 1/8" (3.5 mm) and 1/4" (6.3 mm) headphone output for easy connectivity - no adapters required. Housed in a sturdy metal chassis, the HP4E is an ideal headphone amp for any recording session.Features: Small footprint with 4 totally independent stereo high-power amplifiers in half 1 RU package Carefully selected components for high quality audio even at extremely high volume levels Two stereo inputs for full flexibility with independent selection of input for each output Two outputs per channel with each a 1/4" (6.3mm) and 1/8" (3.5mm) stereo socket so no adapter is needed Rugged construction with strong metal housing to withstand rough working environments Specifications: Design: 4-Channel Headphone Amplifier Input: 6.3 mm (1/4") socket - unbalanced Input impedance: 100k Ohms Output: 3.5 mm (1/8") socket and 6.3 mm (1/4") socket per channel Output impedance: 11 Ohms Audio frequency bandwidth: 20 to 20000 Hz Max. output level: 220 mW Distortion: <0.05% Signal to Noise: better than 85 dB-A Net weight (incl. power supply): 760 g