Professional recording quality, desktop size.

The PreSonus HP4 Discrete 4-Channel Headphone Amp features 4 headphone outputs on the front panel, each with its own volume, and 150mW of amplification per channel—extremely loud output with a low -98dB noise floor. It also allows control over control room monitors with a separate volume knob that can be muted using the Monitor Mute button. 1/3 rackspace. Accepts balanced/unbalanced inputs and outputs (1/4" TRS). Input can either be set to stereo or mono (the mono selector button on the front channel simply copies both inputs to both sides). Powered by an external wall-mounted supply.

The HP4 represents a tremendous value as echoed by this email received by PreSonus:

"To my amazement, your HP4 sounded as good as both of my hi-fi stereo heaphone amps. Very very clean and loud. I can't believe you put 150 mw per channel, @52 ohms, to four headphone outputs and offer such a quality unit for very little over $100." (M. Burke via email)

PreSonus HP4 Discrete 4-Channel Headphone Amp Features:

• 4 discrete headphone outputs
• Each with its own volume and 150mW of power
• Extremely loud output with low noise (-98dB noise floor)
• Allows control over control room monitors with a separate volume knob
• Control room volume can be muted using the Monitor Mute button
• 1/3 rackspace
• Balanced/unbalanced TRS I/O
• Powered by an external wall-mounted supply

Think small and get big-time headphone control.

PreSonus HP4 Discrete 4-Channel Headphone Amp Specifications:

• Input:
• TRS Impedance: 10K Ohms
  
  Panel Controls:
• Headphone Level 1 to 12
• Monitor / Feed Output -80dB to +10dB
• Mono Switch
• Monitor / Feed Mute
  
  Power Supply:
• Type Linear
• Input 16VAC/1000mA (factory configured)
  
  Output:
• TRS Balanced: 51 Ohms Impedance
  
  Performance:
• THD+Noise (Unweighted): 0.002%
• Noise Floor : -98dB
• Signal To Noise: >95dB
• Power Supply Rejection: >98dB
• Power: 16 Watts
  
  Physical:
• Weight: 5lbs.
• Dimensions: 5.5" x 5.5" x 1.75"
• Mounting: Max Rack and Universal Rack Tray
• Chassis: Steel
• Panel: Brushed Aluminum
• Sides: Cast Aluminum

PreSonus HP4 Discrete 4-Channel Headphone Amp

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Average of 23 User Ratings

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Customer Reviews

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WOW! Turn it down!

Posted by Rick from Minnesota on Sep 10, 2009

Experience w/product: I own it

Reviewer's Background: Former pro - now an unpaid active musician.

Reviewer's Play Style: Almost anything.

Well I plugged it into my headphone jack on my pc speakers and started a playback. I had the units volume at about 10:00 and it nearly pierced my ears. I turned down the powered speaker volume and it was still too loud so I turned the unit down to a fraction above off and that worked fine. I don't yet have the right wire for plugging into a line out instead but I'm sure that will be loud enough also.

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Not that good

Posted by Music lover from OP, KS on Mar 18, 2009

Experience w/product: I own it

Reviewer's Background: Record for fun

Reviewer's Play Style: Rock

First one I got was defective. There was no increase in volume after the 12-o’clock position. Second one worked. The salesman told me that this amp would be loud enough for a drummers headphone mix during recording. Not true and not even close. It does provide decent sound but my stereo amp that we still use for recording drums, sounds better and is louder. I would not recommend this for those who need the headphone mix loud, but at low to moderate levels this is probably as good as other brands in this price range.

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Terrific!

Posted by Michael Blue from Central IL on Feb 26, 2009

Experience w/product: I own it

Reviewer's Background: Active musician, Indie-level producer

Reviewer's Play Style: Electronica, Alternative CCM

Revamping the studio into more of an Indie-level multimedia production facility for an Indie-level record label, I found myself needing additional headphone channels, and more control over my monitors. This solid as a rock, all-metal unit was exactly what I needed! Crystal clear sound, TONS of headroom, and that all important "monitor mute" button! I'd buy it again in a heartbeat! ~M

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Crystal clear but thin and tiring sound

Posted by Tasos98 from Greece on Nov 15, 2008

Experience w/product: I own it

Reviewer's Background: Hobbyst

Reviewer's Play Style: Rock, Pop, Dance

I bought it as an an alternative choice of a double priced tube head amp to drive my Senheiser HD-650. The sound is very-very clear. I can hear whether the dust cover of my turntable is closed or open. BUT: The sound is very tiring. I admit I don 't like the "proffesonal sound" and this one "scratches" my ears. Furthermore, the sound stage is not placed above your head (as tit should be) but stuck right inside it (which is annoyng for may tastes). However is perfect for listening to old and warn-out vinyl records. Its analytic character adds some "air" to the sound and it makes them more listenable. I don't know if I could bye a better one at that price but I 'm looking forward to replace it with a pricier one.

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Extremelly useful!

Posted by Daniel from Hollywood on Oct 12, 2008

Experience w/product: I own it

Reviewer's Background: Musician, Recording Engineer

Reviewer's Play Style: Ambient, Hardcore, Metal

This thing sounds great, you get more control over your monitor volume with the know and mute button. It does not add any noise to your monitors or headphones, its a great product!

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PreSonus HP4 Discrete 4-Channel Headphone Amp

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