The Presonus HD9/ HP4 Pack is an HP4 4-channel headphone amplifier with four HD9 closed-back headphones, and is designed to deliver personal monitoring for up to four musicians, artists, or podcast guests in home, project, or commercial studios. The foldable, rotatable headphones utilize 45mm neodymium drivers to produce a frequency response of 10 Hz to 26 kHz. Connect them to the high-power, front-panel 1/4" headphone outputs of the HP4, which also offers left and right 1/4" output jacks for connection to studio monitors. The headphone amp accepts a stereo feed via 1/4" inputs and features an adjustable headphone level per channel, switchable mono/stereo operation, adjustable monitor level, and a monitor mute switch.
Presonus HP4 4-Channel Headphone Distribution Amplifier
The Presonus HP4 answers the need for a headphone distribution amplifier with professional specifications in a small package at an affordable price. It is designed with four discrete headphone outputs on the front panel, each with its own volume potentiometer and 150mW of amplification per channel.
The HP4 also features adjustment capability for control-room monitors with a separate volume control, monitor mute switch and mono switch, thus giving you an extremely powerful monitoring solution at an amazingly low price.
Presonus HD9 Professional Over-Ear Monitoring Headphones (Closed Back) – 4 Units Included
The Presonus HD9 is a pair of professional-quality monitoring headphones, which deliver loud, clear, and clean audio, while minimizing listening fatigue. The HD9 sports 45mm dynamic, neodymium drivers with high-power handling (900mW per channel into 40 Ohms) and an extended frequency response from 10 Hz to 26 kHz for accurate bass response and precision mixing.
The closed-back, circumaural design keeps the sound inside the ear cups for isolation while tracking, while the adjustable headband and comfy earpads are designed for long listening sessions. The single-sided cable is 10' long to provide plenty of slack, giving you freedom to move about your workstation or console. The 1/8" stereo plug connects to a variety of professional audio devices. The PreSonus HD9 ships with a gold-plated 1/8" to 1/4" adapter and a storage bag.
Fit and Comfort
Connection and Storage