Lab Gruppen E54 500W 4-Channel Power Amplifier – Flexible Output, High-Performance Audio

System installers in search of a compact, flexible amplifier with Hi-Z and Lo-Z output capabilities should check out the Lab.Gruppen E 5:4, a 1 RU, four-channel 500W amplifier for mixed A/V installation applications. The E 5:4 utilizes IntelliDrive Energy Efficient Amplifier (IDEEA) technology to produce high power levels with very low distortion while drawing minimal mains current.

E-Series amplifiers also utilizes Lab.Gruppen’s proprietary Rail Sensing Limiter (RSL) technology, which greatly reduces signal clipping to ensure high-quality audio output all the time. The amplifier is user-configurable for Hi-Z (70/100V) or Lo-Z. The RSL circuit senses rail voltage and optimizes each channel output for instantaneous load conditions. This allows for asymmetrical channel loading for optimized performance and efficiency. Total available output power can be allocated among the channels as required by the application. This makes it possible, for example, to drive a small sub on one channel and several 70/100V ceiling loudspeakers on the other channels.

Features of Lab.Gruppen E 5:4

• Two-Channel Amplifier: 4 x 125W
• IntelliDrive: 70/100V or 4, 8, 16 Ohms
• Energy-Efficient Class-D Amplifier
• Asymmetric Channel Loading
• Comprehensive Circuit Protection
• Rail Sense Limiter (RSL)
• Includes Screw Terminal I/O Blocks
• Includes Power Cord

Applications of Lab.Gruppen E 5:4

Commercial Audio Installations

• Background music (BGM) systems
• Foreground music in restaurants, cafés, and retail stores
• Distributed audio in malls and shopping centers
• Office buildings and corporate AV systems

Houses of Worship

• Distributed sound zones (e.g., lobby, sanctuary, classrooms)
• Low/medium-power speaker systems
• Assisted listening system amplification

Conference Rooms & Meeting Spaces

• Corporate boardrooms
• Medium-sized conference rooms
• Digital signal processor (DSP)–controlled installations
• Ceiling speaker arrays (4–8 speakers per channel, depending on impedance configuration)

Education Facilities

• Classrooms and lecture halls
• Multi-zone campus audio systems
• Auditoriums with distributed speaker lines

Hospitality & Leisure Venues

• Hotels and resorts
• Gyms and fitness centers
• Spas and wellness centers
• Bars, lounges, and entertainment venues

Multi-Zone Audio Systems

The E 5:4’s Flexible Output Mode allows channels to be combined or configured independently, making it ideal for:

• 2-zone / 3-zone / 4-zone setups
• Distributed speaker lines
• Paging + music systems

Small to Medium Performance Spaces

• Community halls
• Rehearsal studios
• Small theaters (for fills and auxiliary zones)

Fixed Install Sound Reinforcement

• Museums and exhibit centers
• Government buildings
• Public address (PA) systems
• Airports and transit terminals (non-critical paging)

Specifications of Lab.Gruppen E 5:4