Chord Alto Professional Headphone Amplifier

Chord Alto The Alto is a high-performance pro audio headphone and nearfield monitor amplifier, designed to meet the demands of today’s high-resolution audio environments. It can power up to four pairs of headphones simultaneously, featuring two 3.5 mm and two 6.35 mm outputs on the front panel. With 50 watts per channel for nearfield monitoring, it delivers ample power for both speaker and headphone setups. Designed for easy integration into 19-inch rack systems with a 1U height, the Alto includes both balanced and unbalanced inputs, along with a pair of balanced XLR outputs for bypass or external monitor control. Specifications Dimensions: 200 mm (W) x 44.45 mm (H) x 215 mm (D) Frequency Response: 6 Hz – 60 kHz Output Power (Speakers): 50 W into 4 Ω Output Power (Headphones): 2250 mW into 100 Ω Signal-to-Noise Ratio: 119.6 dB THD (Speakers): 0.003% into 4 Ω THD (Headphones): 0.001% into 100 Ω Input Max Voltage: 6 V RMS Output Max Voltage: 15 V RMS Operation Voltage: 80–250 V AC (auto-switching) Crosstalk: -95 dB Chord Alto User Manual