PreSonus HP4

HP4

Now hear this!

Are you and your session players and bandmates tired of straining to hear underpowered headphones? We were too, so we created the HP4 headphone-distribution system. These headphone amps are louder than you’re ever likely to need for session and stage use, so be careful with that level control! Yet the sound is clear and clean, with a wide dynamic range. At last, everybody will be able to hear!

Features

Input/Output

• 4 screaming-loud (130 mW per channel) stereo ¼-inch headphone outputs (front panel)
• 2 balanced ¼-inch line outputs (monitor outputs)
• 2 balanced ¼-inch 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

Technical Specifications
Inputs
Connector Type ¼” TRS, balanced
THD+N 0.0025%, 1 kHz, unity gain
Max Input Level +18 dBu, <0.5% THD+N, unity gain
Input Impedance 10 k?
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 51?
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, 60? load
Frequency Response 20 Hz – 20 kHz, ±0.5 dB, 60? load
Headphone Impedance Working Range 32? – 600?
Power
External Adapter Type +12 VDC, 1000 mA, center pin positive
Physical
Dimensions 1/3U rack-mount (with standard rack tray, not included)
Height 1.75” (44.45 mm)
Depth 5.5″ (139.7 mm)
Width 5.5” (139.7 mm)
Weight 5 lbs (2.27 kg)
As a commitment to constant improvement, PreSonus® Audio Electronics, Inc., reserves the right to change any specification stated herein, at any time, without notification.