AKG HP4E 4-Channel Headphones Amplifier
The AKG HP4E is a compact, solidly-built headphone distribution amplifier designed for studios, live sound setups, and rehearsal spaces where multiple musicians need independent headphone mixes. Its rugged metal chassis feels professional and fits neatly into standard rack configurations, while the intuitive layout of individual channel controls makes operation straightforward during sessions.
Design & Build Quality
Housed in a rugged metal 1RU half-rackspace chassis, the HP4E integrates seamlessly into rack-mounted systems. The compact footprint and professional construction ensure durability in both studio and touring environments without consuming excessive rack space.
Audio Performance & Connectivity
The unit delivers clean amplification through 4 independent high-power stereo amplifiers, each capable of driving headphones at comfortable monitoring levels across band members, session musicians, or talent. With 2 stereo inputs feeding 4 stereo output channels, you can distribute one or two independent mixes to multiple headphone users simultaneously, while 1/8″ (3.5 mm) and 1/4″ (6.3 mm) headphone outputs per channel accommodate any standard headphone connector. Low output impedance of 11 Ohms and high input impedance of 100k Ohms ensure minimal signal degradation and transparent audio pass-through from your mixing console or interface.
Key Features
- 4 independent high-power stereo amplifiers
- 2 stereo inputs, 4 stereo output channels
- 1/8″ (3.5 mm) and 1/4″ (6.3 mm) headphone output per channel
- Unbalanced 1/4″ (6.3 mm) input sockets
- Individual volume control per output channel
- Selector switch per output channel
- Input impedance: 100k Ohms
- Output impedance: 11 Ohms
- Audio frequency bandwidth: 20 to 20000 Hz
- 12 V, 500 mA power adapter
- Rugged metal 1RU half-rackspace chassis
- Line level input design
The HP4E solves the practical challenge of feeding independent headphone mixes to multiple performers or band members in recording and live tracking sessions, delivering reliable signal distribution with the control and connectivity essential for professional tracking environments.
