{"product_id":"lab-gruppen-e-5-4-500w-4-channel-installation-power-amplifier","title":"Lab Gruppen E 5:4 500W 4-Channel Installation Power Amplifier","description":"\u003ch2\u003eLab Gruppen E 5:4 4-Channel 500W Installation Power Amplifier\u003c\/h2\u003e\n\n\u003cp\u003eThe Lab Gruppen E 5:4 is a 500W, four-channel installation power amplifier delivering 125W per channel across Hi-Z (70V constant voltage) or Lo-Z (4, 8, and 16 ohm) configurations — all within a compact 1U rack-mount chassis. Powered by Lab Gruppen's proprietary IDEEA (IntelliDrive Energy Efficient Amplifier) Class-D topology, the E 5:4 produces high output levels with less than 0.1% THD while drawing minimal mains current, making it one of the most efficient amplifiers available for permanent commercial audio installations.\u003c\/p\u003e\n\n\u003cp\u003eFor integrators evaluating the best 4-channel amplifier for commercial AV installation, the E 5:4 delivers a rare combination of output flexibility and energy performance. Asymmetric channel loading enables mixed-impedance deployments from a single chassis — a practical advantage when driving a 70V ceiling speaker zone, a low-impedance subwoofer, and full-range passive speakers simultaneously. This makes the E 5:4 an ideal 70V amplifier for ceiling speakers in distributed audio systems across restaurants, retail outlets, hotels, houses of worship, performing arts centers, and convention centers.\u003c\/p\u003e\n\n\u003cp\u003eBuilt on Lab Gruppen's touring-grade engineering heritage, the E Series adds the installation-specific features that system designers require: GPIO connectivity for third-party power control, auto-standby that drops consumption below 1W after 20 minutes of signal absence, and a Rail Sensing Limiter (RSL) circuit that continuously optimizes each channel's output for instantaneous load conditions — eliminating the need for manual reconfiguration when loads vary across zones. The E 5:4 carries full Energy Star 3.0 certification and CE approval, satisfying green building specifications and international compliance requirements for permanent installations.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features of the Lab Gruppen E 5:4 Installation Amplifier\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIDEEA Class-D Output Stage:\u003c\/strong\u003e Patented IntelliDrive technology delivers 500W total output with greater than 80% operating efficiency, reducing heat load and lowering demands on mains distribution infrastructure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHi-Z \/ Lo-Z Output Flexibility:\u003c\/strong\u003e Each channel independently supports 70V constant voltage or low-impedance loads (4, 8, and 16 ohms), eliminating the need for separate amplifiers in mixed-system deployments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAsymmetric Channel Loading:\u003c\/strong\u003e Enables unequal load distribution across channels — drive a subwoofer on one channel and multiple 70V ceiling loudspeakers on another without performance penalty.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRail Sensing Limiter (RSL):\u003c\/strong\u003e Proprietary circuit continuously senses rail voltage and optimizes each channel output for real-time load conditions, greatly reducing signal clipping and ensuring consistent audio quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnergy Star 3.0 Certified:\u003c\/strong\u003e Auto-power-down reduces standby consumption to below 1W; auto-power-on resumes operation when input signal returns, supporting green building specifications and lowering lifetime operating costs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGPIO Integration:\u003c\/strong\u003e Two 2-pole detachable screw terminal connectors provide General Purpose I\/O for remote power state control and monitoring via third-party building management or AV control systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Circuit Protection:\u003c\/strong\u003e Fail-safe protection circuitry maintains operation under reduced conditions; dual temperature-controlled fans with front-to-back airflow ensure reliable thermal management in dense rack environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Output Power:\u003c\/strong\u003e 500W (all four channels driven)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power Per Channel (Lo-Z, all channels driven):\u003c\/strong\u003e 125W into 4 ohms, 125W into 8 ohms, 63W into 16 ohms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power Per Channel (Hi-Z, all channels driven):\u003c\/strong\u003e 125W into 16 ohms \/ 70V system\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Channels:\u003c\/strong\u003e 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Configuration:\u003c\/strong\u003e Hi-Z (70V) or Lo-Z (4, 8, 16 ohms), user-selectable per channel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmplifier Topology:\u003c\/strong\u003e IDEEA — Class-D variant (patented)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 2 Hz – 40 kHz (+0 \/ -3 dB at 1W into 8 ohms)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTHD (20 Hz – 7 kHz, 1W):\u003c\/strong\u003e \u0026lt;0.1%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTHD (1 kHz, 1 dB below clipping):\u003c\/strong\u003e \u0026lt;0.05%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e \u0026gt;112 dBA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e \u0026gt;70 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGain (70V mode):\u003c\/strong\u003e 35.2 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGain (Lo-Z mode):\u003c\/strong\u003e 28.2 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePeak Output Voltage Per Channel:\u003c\/strong\u003e 100V (70V rms)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Output Current Per Channel:\u003c\/strong\u003e 9.9 Arms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 20 kΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Connectors:\u003c\/strong\u003e Electronically balanced, 3-pin detachable screw terminals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Connectors:\u003c\/strong\u003e 2-pin detachable screw terminals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGPIO Connectors:\u003c\/strong\u003e Two 2-pole detachable screw terminal connectors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLevel Controls:\u003c\/strong\u003e 4 x rear-panel potentiometers (-∞ to 0 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandby Power Consumption:\u003c\/strong\u003e \u0026lt;1W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto-Power-Down:\u003c\/strong\u003e 20 minutes after signal loss\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet Operating Efficiency:\u003c\/strong\u003e \u0026gt;80%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 100–240V AC, 50\/60 Hz (universal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRack Format:\u003c\/strong\u003e 1U (19\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e Energy Star 3.0, CE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChassis:\u003c\/strong\u003e Black painted steel; grey painted aluminum front panel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 19\" x 1.73\" x 15\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 13.2 lbs (6 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLab Gruppen E 5:4 Power Amplifier\u003c\/li\u003e\n  \u003cli\u003ePower cord\u003c\/li\u003e\n  \u003cli\u003ePhoenix connectors for input, output, and GPI\/GPO power control\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lab Gruppen","offers":[{"title":"Default Title","offer_id":45986441953477,"sku":"LBGPN-E54","price":1449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3085\/3829\/files\/582f065b6fc0acbec1220ac8aaa02a89.jpg?v=1774031158","url":"https:\/\/avlgear.com\/products\/lab-gruppen-e-5-4-500w-4-channel-installation-power-amplifier","provider":"AVLGEAR","version":"1.0","type":"link"}