Woodbrass HA4-2 4-channel Stereo Headphone Preamp The Woodbrass HA4-2 is a compact and robust 4-channel headphone preamp designed to deliver clear, powerful amplification without hiss or distortion. Perfect for studio use, recording or mixing, it allows multiple users to listen simultaneously with independent volume control. Key features Audio quality: Transparent amplification without signal alteration. Flexible: 4 independent channels with individual volume control. Practical: 3.5 mm and 6.35 mm jack outputs on each channel, no need for adapters. Compact: Less than 15 cm wide, it fits easily into any workspace. Durable: Robust metal casing for maximum longevity. Features: 4-channel headphone preamp with rotary volume control per channel. LED indicators: Green (signal) and red (clipping) on each channel. Red LED power indicator. Base fitted with non-slip feet. Audio inputs: RCA left/right + 3.5 mm stereo mini-jack. Input impedance: 22 kOhm. Stereo/mono mode via conversion knob. Maximum gain: +22 dB per output. Maximum output level: 4 x 100 mW. Output impedance: Minimum 16 Ohms per channel. Output connectors: 4 x 6.35 mm stereo jack + 4 x 3.5 mm stereo jack. Bandwidth: 20 Hz - 20 kHz. Signal-to-noise ratio: >98 dB. Power supply: 12V DC 300 mA adapter included. Dimensions: W 12.8 x H 5 x D 8.3 cm Weight: 343 g (516 g with power supply)
en 
