PreSonus HP4 Headphone Amplifier

The HP4 Headphone Amplifier from PreSonus is simple to set up and use while including all the features you need to create a versatile headphone system. This compact amp can sit on a tabletop, or it can be screw-mounted to a standard rack tray (not included), where it requires just 1/3 rackspace. With a clean, clear sound with a wide dynamic range, the HP4 headphone-distribution system boasts the portability, versatility, and quality to meet your headphone amp needs!

PreSonus HP4 Features

• 4 screaming-loud (130 mW per channel) stereo ¼" headphone outputs (front panel)
• 2 balanced ¼" line outputs (monitor outputs)
• 2 balanced ¼" line inputs
• Headphone level control for each channel
• Mono summing switch for each channel
• Monitor level control
• Monitor mute switch
• Daisy-chain multiple units via monitor outputs
• Compact 1/3U rack-mount chassis
• Sealed, detented, metal rotary controls
• External 16 VAC power supply
• 1/3U rack-mount size

• HP4 headphone amplifier1

• Inputs
  • Connector type: 1/4" TRS balanced
  • THD+N: 0.0025%, 1 kHz, unity gain
  • Max input level: +18 dBu, <0.5% THD+N, unity gain
  • Input impedance: 10kΩ
  • Frequency response: 20Hz - 20kHz (+/-0.5dB)
• Monitor outputs
  • Connector type: 1/4" TRS, asymmetrical, impedance-balanced
  • THD+N: 0.0025%, 1 kHz, unity gain
  • Max output level: +18 dBu, <0.5% THD+N
  • Output impedance: 51Ω
  • Frequency response: 20Hz - 20kHz (+/-0.5dB)
• Headphone outputs
  • Connector type: 1/4" TRS stereo
  • Max output power: 130mW/Ch. <0.5% THD+N, 60Ω load
  • Frequency response: 20 Hz - 20 kHz, ±0.5 dB, 60Ω load
  • Headphone impedance working range: 32Ω - 600Ω
• External adapter type+12 VDC, 1000 mA, center pin positive
• Dimensions (HxDxW)1.75" x 5.5" x 5.5"
• Weight5 pounds (2.27 kg)

About Headphone Amplifiers at Sound Productions

Improve your headphones’ audio quality with Sound Productions’ wide selection of headphone amplifiers. A headphone amplifier (also called a “headphone amp” for short) is a low-powered audio amplifier designed to raise the signal of low-voltage devices including headphones, earphones, or earbuds. Headphone amps allow you to connect multiple sets of headphones to a single audio source. A headphone amplifier replaces loudspeakers in speaker enclosures.

In general, headphone amps are usually a component of another piece of gear that features a headphone jack, such as integrated amplifiers, portable music players, and TVs. However, headphone amps are also sold as separate pieces of gear for specific applications. A popular piece of gear in professional audio setups, headphone amplifiers are useful tools for musicians in recording studios, audio engineers, and record producers. They are also a great addition to any audiophile or hi-fi enthusiast’s sound system.

Whether you’re an audio creator equipping your studio, a recording professional upgrading or replacing older gear, or simply a music enthusiast who wants their sound to be spectacular, SoundPro’s headphone amps are an ideal choice for meeting your needs.