PreSonus HP4 4-Channel Headphone Amp

The PreSonus HP4 Discrete 4-Channel Headphone Amp features 4 headphone outputs on the front panel, each with its own volume, and 150mW of amplification per channel-extremely loud output with a low -98dB noise floor. It also allows control over control room monitors with a separate volume knob that can be muted using the Monitor Mute button. 1/3 rackspace. Accepts balanced/unbalanced inputs and outputs (1/4″ TRS). Input can either be set to stereo or mono (the mono selector button on the front channel simply copies both inputs to both sides). Powered by an external wall-mounted supply.

Connections:

• Input: TRS Impedance: 10K Ohms
• Output: TRS Balanced: 51 Ohms Impedance

Performance:

• THD+Noise (Unweighted): 0.002%
• Noise Floor: -98dB
• Signal To Noise: >95dB
• Power Supply Rejection: >98dB
• Power: 16 Watts

Panel Controls:

• Headphone Level: 1 to 12
• Monitor / Feed Output: -80dB to +10dB
• Mono Switch: Monitor / Feed Mute

Power Supply:

• Type: Linear
• Input: 16 VAC/1000 mA (factory configured)

Physical:

• Weight: 5 lb.
• Dimensions (W x D x H): 5.5″ x 5.5″ x 1.75″
• Mounting: Max Rack and Universal Rack Tray
• Chassis: Steel
• Panel: Brushed Aluminum
• Sides: Cast Aluminum