PreSonus HP4 Headphone Amplifier

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Tags: presonus

Are you and your session players and bandmates tired of straining to hear underpowered headphones? 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!

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 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	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.