PreSonus HP4

HP4: 4-Channel Headphone Amplifier

Features

Input/Output

• 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

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

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)