Presonus HP4 Headphone amplifier

Compact four-channel headphone amplifier that delivers clear and clean sound with a wide dynamic range, equipped with four screaming-loud (150 mW per channel) stereo 6.3mm headphone outputs on the front panel. It provides headphone level control and mono summing switch for each channel, and monitor level control and mute switch. It also allows for daisy-chaining multiple units via two balanced 6.3mm line outputs (monitor outputs). Its chassis is rack-mountable into 1/3U rack (with standard rack tray, not included) and equipped with sealed, detented, metal rotary controls. Dimensions: 44.45 x 139.7 x 139.7 mm. eight: 2.27 kg.