The PreSonus HP4 four-channel headphone amplifier solves the common studio challenge of sharing audio between multiple listeners from a single source. This compact unit features four individual headphone outputs, each equipped with its own volume control, allowing musicians and engineers to set their preferred listening levels regardless of headphone impedance differences. The dual balanced 1/4-inch line inputs maintain signal integrity from your mixing desk or audio interface.
Studio flexibility comes standard with the HP4's monitor output and mute function, enabling seamless switching between headphone monitoring and studio speakers. The daisy-chain capability through the monitor output means you can connect additional headphone amplifiers when larger sessions demand more headphone feeds. At 150 milliwatts per channel, there's sufficient power for demanding studio environments.
Practical design elements include textured knobs for precise adjustment and a mono button for combining stereo signals when needed. The unit's compact footprint fits easily into crowded control rooms, while high-quality internal components maintain clean, accurate audio reproduction across all outputs.
- 4 screaming-loud (150 mW per channel) stereo 1/4-inch headphone outputs (front panel)
- 2 balanced 1/4-inch line outputs (monitor outputs)
- 2 balanced 1/4-inch line inputs
- Headphone level control for each channel
- Mono summing switch for each channel
- Monitor level control
- Monitor mute switch
- Daisy-chain multiple units via monitor outputs



