Rockboard HA 4 4-Channel Headphone

Rockboard HA 4 4-Channel Headphone, Headphone Amplifier, Compact headphone amplifier system for stage and studio applications, Four separate stereo amplifiers, Separate volume control for each output, Suitable for all types of headphones, Best sound quality at all volumes, High-quality components and robust design with metal housing, 12V DC power supply included (2.1 x 5.5 mm coaxial power plug, centre negative), Input: 1 x 6.35 mm (4/1") TRS socket, Output: 4 x 6.35 mm (4/1") TRS socket, Signal-to-noise ratio: 82 dB, Total harmonic distortion: 0.009 %, Frequency response: +1 dB / -2 dB at 20 Hz -22 KHz, Gain: 20 dBu, Dimensions: (L x W x H): 102 x 58 x 45 mm, Weight: 182 g ...