Presonus HP4 Headphone Amp

Presonus HP4 Compact Headphone Amplifier 4 Channel 

The HP4 from PreSonus answers the need for a headphone distribution amplifier with professional specifications in a small package - at an affordable price.

The HP4 features four discrete headphone outputs on the front panel each with its own volume potentiometer and 150mW of amplification per channel.

The HP4 also features adjustment over control room monitors with a separate volume control, monitor mute switch and mono switch giving you an extremely powerful monitoring solution at an amazingly low price. Mono or stereo operation.

Mount up to six 1/3-rack Presonus units in the Maxrack desktop minirack, available separately, for a complete processing rack right on your desktop!

HP4 Features:
-Input/Output
• 4 screaming-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

HP4 Specifications:
-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 vMax 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)