Channel Your Sound. You've positioned your microphones, set your levels and everyone's ready to record. Now, you need a way for each performer to hear themselves. That's where the Samson QH4 comes in... The QH4 is a 4-channel headphone amplifier designed to distribute your audio to up to four individual headphones, each with its own volume control. Its compact design is perfect for use with any studio or desktop workstation, as well as with your laptop or smartphone when you're recording on the go. Features: SAMSON QH4 4-Channel Stereo DJ Studio Monitoring Headphone Amplifier Amp 4-channel stereo headphone distribution amplifier Four independent 1/4' stereo headphone channels Individual volume control on each headphone channel Two balanced 1/4' input connectors Stereo 1/8' Aux input and output Master Mute and Mono-summing switche Samson SR850 Professional Semi-open Studio Reference Monitoring Headphones Ideal for professional recording and hi-fi monitoring Transparent response with airy highs and pronounced depth Over-ear, semi-open-back design with velour cushioning Large 50mm drivers with rare earth magnets Adjustable headband 10Hz 30kHz frequency response 32 Ohm impedance 1/4' adapter included