The PreSonus HP4 4-Channel Headphone Amplifier is an affordable, yet powerful monitoring solution. Featuring four discrete headphone outputs with individual volume potentiometer and 150mW of amplification per channel, the HP4 provides sound that’s clear and clean with a wide dynamic range and super loud. The HP4 lets you daisy-chain multiple units via monitor outputs and offers adjustment capability for control-room monitors with a separate volume control, monitor mute switch and mono switch. For ease of use, the HP4 provides simple front-panel access with a monitor mute switch and a push button mono or stereo operation. In a compact 1/3U rack-mount chassis, the PreSonus HP4 is your number choice. Accessory Bundle: Resident Audio R100 Professional Stereo Headphones – Closed-back headphones with a lightweight design and adjustable comfortable headband deliver studio sound quality with 20Hz-20kHz frequency response Fibertique Cloth – Designed with delicate fabric to safely and effectively clean the surface of electronic devices 3-Pin Jack to 6.35mm Stereo Plug Adapter Xpix professional-quality XLR Cable 3X Xpix ¼” TRS Cable