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PreSonus

PreSonus HP4 4-Channel Headphone Amplifiers

PreSonus HP4 4-Channel Headphone Amplifiers

SAR 699
SAR 607.83 (Excl. VAT)
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Product Overview

The PreSonus HP4 is a desktop 4-channel headphone distribution amplifier housed in a 1/3-rackspace steel chassis engineered for multi-performer monitoring in recording and broadcast environments. The analog architecture utilizes low-noise operational amplifiers providing up to 130 mW output power per channel at high dynamic range. Front-panel controls include four discrete volume potentiometers, mono summing toggles per channel, a main monitor level control, and a monitor mute switch that isolates control room speakers while keeping headphone feeds active. Interfacing via dual balanced 1/4" TRS inputs and pass-through monitor line outputs, the HP4 operates as a standalone monitoring station or an expandable multi-unit headphone distribution network.

Product Features

  • 4 High-Output Headphone Channels: Delivers 130 mW per channel for clean, low-distortion monitoring through low and high-impedance studio headphones.
  • Independent Level Controls: Dedicated volume potentiometers for each of the four front-panel 1/4" headphone outputs allow customized personal monitoring levels.
  • Control Room Monitor Outputs & Mute Switch: Balanced 1/4" TRS monitor outputs with a main level control knob and a dedicated monitor mute button.
  • Mono Summing Switches: Individual front-panel mono sum buttons fold stereo signals to mono for checking phase alignment and tracking balance.
  • Daisy-Chain Expansion Capabilities: Rear-panel monitor line outputs allow multiple HP4 units or external headphone distribution systems to be daisy-chained together.

Specifications

Product Model:
PreSonus HP4
Device Type:
4-Channel Stereo Headphone Distribution Amplifier
Amplifier Output Power:
130 mW RMS per Channel @ 60 Ω (High-Output Drive)
Dynamic Range:
> 110 dB (A-Weighted)
Frequency Response:
20 Hz – 20 kHz (±0.5 dB)
Total Harmonic Distortion (THD+N):
< 0.0025% (Unweighted)
Analog Line Inputs:
2 x 1/4" TRS Balanced / Unbalanced (Left / Right)
Analog Line Outputs:
2 x 1/4" TRS Balanced / Unbalanced Control Room Monitor Outputs
Headphone Outputs:
4 x 1/4" TRS Stereo Headphone Outputs (Front Panel)
Front Panel Controls:
4 x Channel Volume Knobs, 4 x Mono Switches, Monitor Level Knob, Monitor Mute Switch
Input Impedance:
10 kΩ Balanced
Output Impedance:
51 Ω (Headphone Outputs)
Form Factor:
Compact Desktop Chassis (1/3-Rackspace Mountable via Optional Tray)
Power Requirements:
16 VAC External Power Adapter (Included)
Dimensions (W x D x H):
139.7 mm x 139.7 mm x 44.45 mm (5.5" x 5.5" x 1.75")
Net Hardware Weight:
2.27 kg (5.0 lbs)
Color Finish Profile:
Matte Silver Front Panel with Blue/Black Steel Chassis