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PreSonus HP4 4-Channel Headphone Amplifier - Compact Design — main product image
PreSonus HP4 4-Channel Headphone Amplifier - Compact Design
PreSonus HP4 4-Channel Headphone Amplifier - Compact Design
PreSonus HP4 4-Channel Headphone Amplifier - Compact Design
PreSonus HP4 4-Channel Headphone Amplifier - Compact Design
PreSonus

PreSonus HP4 4-Channel Headphone Amplifier - Compact Design

★★★★★4.6 (380 reviews)

Compact 4-channel headphone amp delivering 130mW per channel with a whisper-quiet -98dB noise floor.

$149.99*$178.99Save 16%
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*Price sourced from Amazon.com. Last updated:Aug 05, 2026.Price and availability are subject to change.

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Overview

The PreSonus HP4 is a straightforward 4-channel headphone amplifier built for studios, podcasters, and live setups where multiple performers or engineers need to hear the same mix. Each of its four stereo headphone outputs is powered at 130mW per channel and has its own level knob, so every listener can set a comfortable monitoring volume independently. The unit accepts signal through two balanced ¼" line inputs and passes it along via two balanced ¼" monitor outputs, making it easy to daisy-chain additional HP4 units or feed a pair of studio monitors.

Despite its small 1/3U rack-mount footprint, the HP4 packs in useful features including a global Monitor Mute button for quick talkback transitions, an overall level control, and a mono summing switch for mix-check purposes. With a -98dB noise floor, the amplifier keeps hiss and interference well below audible levels during quiet passages. It is a no-frills, reliable solution for anyone who needs to distribute a clean headphone mix to a small group without occupying much rack or desk space.

Key Features

4 screaming-loud (130 mW per channel) stereo headphone amps

Wide dynamic range

Can serve as control room monitor control w/ level control & Monitor Mute button

Daisy-chain multiple units via 2 balanced ¼” monitor outputs

Compact 1/3U rack-mount chassis

Mono summing switch

2 balanced ¼” line inputs

Super-quiet with -98dB noise floor

Headphone level control

Specifications

Brand
PreSonus
Model
HP4
Channels
4 stereo headphone outputs
Output Power
130 mW per channel
Inputs
2 balanced ¼" line inputs
Monitor Outputs
2 balanced ¼"
Noise Floor
-98 dB
Features
Global mute, overall level control, mono summing switch
Chassis
Compact 1/3U rack-mount

Frequently Asked Questions

The HP4 has four independent stereo headphone outputs, each with its own level control, so four listeners can monitor simultaneously at their preferred volumes.
Yes. The two balanced ¼" monitor outputs let you pass the signal to additional HP4 units, expanding headphone capacity without splitting the source signal externally.
It can. The unit includes an overall level control and a Monitor Mute button, allowing you to use it as a simple monitor controller for your studio speakers via the balanced monitor outputs.
The mono summing switch combines the left and right channels into a single mono signal across all headphone outputs, which is useful for checking mixes for mono compatibility.
It uses a compact 1/3U rack-mount chassis, so it takes up only a third of a standard rack unit width and can sit alongside other half- or third-rack devices.

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