Presonus

Presonus HP4

Four Channel Headphone Amp

Order Code: HP4
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Our Price: $229.99

Small, but nonetheless very well developed headphone amp designed for home studios, listening labs and more. The 15 sec tour: L & R inputs on back, 4 x 1/4" stereo headphone outputs with individual volume pots on front, PLUS a 'monitor level' pot on the front. This can be used for control room monitors. Very handy.

L & R outputs on rear can feed studio monitors, (mono mute switches on front) or to loop through to more HP4 units.

Photo of Presonus HP4 available from Factory Sound
  • Hp4
  • Hp4_front1
  • Hp4_front2
  • Hp4_rear

Input/Output

  • 4 loud (150 mW per channel) stereo ¼” headphone outputs (front panel)
  • 2 balanced ¼” line outputs (monitor outputs)
  • 2 balanced ¼” line inputs


Meters, Controls, and Features

  • 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

Physical

  • Compact 1/3U rack-mount chassis
  • Sealed, detented, metal rotary controls
  • External 16 VAC power supply

Inputs

Connector Type XLR- ¼” TS, Combo, balanced
THD+N 0.0025%, 1 kHz, unity gain 
Max Input Level +18 dBu, <0.5% THD+N, unity gain 
Input Impedance 10 kΩ
Frequency Response 20 Hz - 20 kHz, ±0.5dB

Monitor Outputs

Connector Type  ¼” 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 20 Hz - 20 kHz, ±0.5dB 

Headphone Outputs

Connector Type  ¼” TRS, stereo
Max Output Power 130 mW/Ch., <0.5% THD+N, 60Ω load
Frequency Response 20 Hz - 20 kHz, ±0.5 dB, 60Ω load
Headphone Impedance Working Range 32Ω - 600Ω

Power

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

Physical

Dimensions 1/3U rack-mount (with standard rack tray, not included)
Height 44.45 mm
Depth 139.7 mm
Width 139.7 mm
Weight 2.27 kg