• HP4

PreSonus HP4

  • Brand: PreSonus
  • Item ID: SKU-850

  • $229.99Free shippingFREE SHIPPING!

PreSonus HP4 4-Channel Headphone Amplifer 

Now Hear This!

Are you and your session players and bandmates tired of straining to hear underpowered headphones? We were too. That’s why Jim Odom and his jambalaya-fueled team of engineers designed 150 mW headphone amps for the HP4 headphone-distribution system.

These headphone amps are not just loud enough for session and stage use, they’re loud enough to explode the oysters in a Po’ Boy sandwich. Yet the sound is clear and clean, with a wide dynamic range. At last, everybody will be able to hear—assuming they are capable of hearing. Be careful with that level control!

Simplicity is the HP4’s hallmark. You get left and right line inputs, left and right line outputs with level control, and the four headphone outs. You can globally mute the headphone outs, adjust the overall headphone level, sum the stereo signals to mono, and mute the rear-panel Monitor outputs.

The HP4 can sit on a tabletop or can be screw-mounted to a standard rack tray (not included), where it requires just 1/3 rackspace. And if your needs grow, you can use the line outputs to feed the inputs of a second HP4 or an HP60. Chain as many headphone systems as you need. 


Connector TypeXLR- ¼” TS, Combo, balanced
THD+N0.0025%, 1 kHz, unity gain 
Max Input Level+18 dBu, <0.5% THD+N, unity gain 
Input Impedance10 kΩ
Frequency Response20 Hz - 20 kHz, ±0.5dB

Monitor Outputs

Connector Type ¼” TRS, asymmetrical, impedance-balanced
THD+N0.0025%, 1 kHz, unity gain 
Max Output Level+18 dBu, <0.5% THD+N
Output Impedance51Ω
Frequency Response20 Hz - 20 kHz, ±0.5dB 

Headphone Outputs

Connector Type ¼” TRS, stereo
Max Output Power130 mW/Ch., <0.5% THD+N, 60Ω load
Frequency Response20 Hz - 20 kHz, ±0.5 dB, 60Ω load
Headphone Impedance Working Range32Ω - 600Ω


External Adapter Type+12 VDC, 1000 mA, center pin positive


Dimensions1/3U rack-mount (with standard rack tray, not included)
Height1.75” (44.45 mm)
Depth5.5" (139.7 mm)
Width5.5” (139.7 mm)
Weight5 lbs (2.27 kg)

As a commitment to constant improvement, PreSonus Audio Electronics, Inc., reserves the right to change any specification stated herein at any time, without notification.


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