HP4E

The AKG HP4E is a professional 4-channel headphone amplifier designed for recording studios, podcasting, broadcast, and multimedia production. Featuring four independent high-power headphone amplifiers, dual stereo inputs, and both ¼-inch and 3.5 mm headphone outputs on every channel, it provides flexible, high-quality headphone monitoring in a compact half-rack format.

From The Manufacturer:

The HP4E professional headphone amplifier features two stereo input and four stereo output channels of high-quality audio. Designed for ease of use, convenient front-panel switches allow each user to select their preferred input source. Every output channel includes both a ¼-inch (6.3 mm) and ⅛-inch (3.5 mm) headphone socket, eliminating the need for adapters. Housed in a rugged metal chassis, the HP4E is an ideal headphone amplifier for recording sessions and studio monitoring.

Key Features:

• Four independent stereo headphone amplifiers

• Two selectable stereo inputs

• Independent input selection for each output

• ¼-inch (6.3 mm) and ⅛-inch (3.5 mm) headphone outputs on every channel

• High-quality, high-power headphone amplification

• Compact half 1U rack format

• Rugged all-metal housing

• Low distortion audio performance

• Ideal for recording and broadcast applications

Specifications:

• Product Type: 4-Channel Headphone Amplifier

• Channels: 4 Independent Stereo Outputs

• Inputs: 2 × ¼-inch (6.3 mm) Unbalanced Stereo

• Input Impedance: 100 kΩ

• Outputs:

  • 4 × ¼-inch (6.3 mm) Stereo

  • 4 × ⅛-inch (3.5 mm) Stereo

• Output Impedance: 11 Ω

• Maximum Output Power: 220 mW per Channel

• Frequency Response: 20 Hz – 20 kHz

• THD: <0.05%

• Signal-to-Noise Ratio: >85 dB(A)

• Power Supply: External 12 V DC Adapter

Included:

• AKG HP4E Headphone Amplifier

• 12 V Power Supply

• Quick Setup Guide

Applications:

• Recording studios

• Podcast production

• Broadcast facilities

• Voice-over studios

• Content creation

• Music rehearsal

• Multimedia production

Included Accessories:

• 12 V power supply

• Quick setup guide

Accessories (Not Included):

• Headphones

• Audio cables

• Rack mounting accessories

• Flight case

Size:

• Half 1U Rack Format

Weight:

• 760 g (including power supply)

Electrical/Thermal:

• External 12 V DC power supply

• Four independent high-power headphone amplifiers

• Low-noise analogue circuitry

• Designed for continuous professional operation