Presonus HP4

4-Channel Headphone Amplifier

  • With monitor control
  • 4 Separately adjustable stereo headphone outputs: 6.3 mm Stereo headphone
  • Maximum output power: 130 mW per channel
  • Distortion factor <0.5% THD + N to 60 ohm load
  • Frequency range: 20 - 20,000 Hz
  • THD / N: <0.0025% (input and output)
  • Recommended earphone impedance: 32 - 600 ohms
  • Balanced line input: 6.3 mm jack, L/R
  • Balanced monitor output for connecting the studio monitor or for looping to additional headphones: 6.3 mm jack, L/R
  • Monitor level as the main volume controller of the studio monitor
  • Mute switch for monitor output
  • Mono switch for headphone outputs
  • Dimensions: 140 x 140 x 45 mm
  • Weight: 2.27 kg

Further Information

Number of stereo channels 4
Output Level Adjustment Per Channel Yes
Amount Of Inputs 1
Rack format No

This product is currently sold out

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172 Customer Ratings
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4.5 /5
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Nice piece of gear.
onogio, 29.09.2020
First of all, I must say that this is the first headphones amp I ever own.
I am a student in electroacoustic composition and I have 5 years experience in studio recording etc., from the home basic stuff to proper studio gear (In my school we have enormous Genelec speakers, a big SSL console etc.).
Comparing same headphones (DT990Pro) with the HP4 output to the headphones output of the Audient iD14, one can surely feel a difference in volume, even though I do not need it.
Regarding the actual quality, I think - and feel -this aspect is improved, I do not have any actual data about it though.
So, is it worth to spend 100+ € for this? I do not know.
If you need more headphones outs, surely it is.
Personally, I bought this cause I had problems with 3 pair of headphones stop working without any reason (2 AKG 702 and one DT990Pro) so I wanted to understand if this was related to any piece of my electroacoustic chain.
Surely the "mono" button and the fact that you can pass through and send the signal to your monitor could be really useful (you have also a "monitor mute" button).
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Total
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Excellent!
4instain, 15.05.2017
Does everything it says plus the build quality and sound are great.

You can hook up your monitor speakers to the unamplified outputs and control the volume of them separately.

This amp also has a monitor mute button, so it's perfect when you record in your living room and need to mute the monitors while recording.

No ON/OFF button on the unit, but the power cord has a switch for turning it off. Nice touch!
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Love it
Zonny, 22.03.2021
I've had it since Christmas 2020 and I can say that I'm extremely happy with it.

It's super easy to use, has more than enough volume even cranked half way and has great clarity of sound. It took my DT-880's 600Ohms to the next level. I'll be ordering a pair of Sennheiser HD-280 Pro's soon and I can't wait to see what they sound like through this HP amp.

Pro's: Sturdy build, love the on/off switch on the cable, nobs feel great, looks super slick, tons of volume and clarity, doesn't take up a lot of space (I don't have a huge desk so space is super important to me)

Cons: I don't have two of them (even though I don't need another one haha)
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They will make a difference from stock phones input
Scorpio, 31.10.2017
These do sound much better than your stock headphone input found in most devices these days.
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$115
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