Ecler HADA-4B750 4-Channel 4 x 750W Networkable DSP Power Amplifier
DETAILS
The Ecler HADA-4B750 is a 4-Channel 4 x 750W Networkable Class D DSP Power Amplifier supporting low and high impedance loads, with a 4x4 digital matrix mixer, comprehensive onboard signal processing and full TCP/IP network control.
Delivering up to 1500W bridged output for the highest-power fixed installation audio applications in the HADA series.
The Ecler HADA-4B750 is one of the highest-powered amplifiers in Ecler's HADA series of professional networkable DSP amplifiers, delivering four channels of 750W Class D amplification for the most demanding large-scale fixed installation audio systems. Building on the same proven platform as the rest of the HADA series, the HADA-4B750 provides the exceptional output headroom required for large sports facilities, entertainment venues, educational campuses, large corporate headquarters, hospitality environments and major public buildings.
Whilst retaining the same comprehensive digital signal processing, matrix mixing, network control and protection capabilities that make the HADA series a trusted choice for professional installers and system designers. All of this is achieved within the same compact 2RU 19" rack chassis as the rest of the HADA range, making the HADA-4B750 a remarkably space-efficient solution given its formidable power output.
750W Per Channel with 1500W Bridged Output
The HADA-4B750 delivers 750W per channel into 4 Ohm loads and 400W into 8 Ohm loads, with further operating points of 600W at 2.7 Ohm and 450W at 2 Ohm for lower-impedance speaker configurations — providing a broad and flexible impedance compatibility range. In bridge mode, channel pairs deliver an exceptional 1500W into high-impedance 100V or 70V distributed speaker systems, 1400W at 4 Ohm bridge and 1250W at 8 Ohm bridge for demanding low-impedance bridge applications. This level of output power makes the HADA-4B750 a compelling choice for the largest and most ambitious distributed audio and direct-drive speaker installations where maximum headroom and dynamic range are essential. Output mode selection per channel or channel pair is handled via the HADA DSP Manager software, with power factor correction of greater than 0.96 ensuring highly efficient use of mains power at these substantial output levels.
Advanced Onboard DSP via HADA DSP Manager
The HADA-4B750 shares the same advanced DSP engine as the rest of the HADA series, built around a dual-core 64-bit processor with 96kHz/24-bit audio conversion and 113dB dynamic range. Per-channel processing includes parametric EQ, delay, limiter and multiband compressor on both input and output paths, with a 4x4 digital matrix mixer allowing any input to be routed to any output combination for maximum system design flexibility. All configurations can be saved as presets for rapid system recall and deployment. Signal processing latency is an extremely low 500 microseconds from analogue input to analogue output. The HADA DSP Manager application — accessible via Ethernet (100Mbps, CAT5 up to 100m) and an embedded web application — provides a comprehensive and intuitive interface for all device configuration, monitoring and control from a networked computer or control system.
Multiple Control Options
The HADA-4B750 offers the same generous range of control options as the rest of the HADA series. Front panel rotary attenuators provide direct local level control for each output channel. Four rear panel GPI inputs (0–3.3V) enable remote volume control from external control devices, whilst an external MUTE input via dry contact closure allows system-wide muting from fire detection systems and other safety or control devices. Third-party control system integration is supported via TCP/IP, making the HADA-4B750 compatible with a wide range of building management and AV control platforms. A front panel RUN/SLEEP button enables standby mode for energy-efficient operation during periods of inactivity, with a standby power consumption of just 10W despite the amplifier's substantial output capability.
Comprehensive Protection & Monitoring
The HADA-4B750 is equipped with the same full suite of protection circuits as the rest of the HADA series, providing total reliability in continuous professional operation at the highest output levels. DC protection, HF protection, short-circuit protection and thermal protection — with automatic output power reduction at 90°C and full mute at 100°C — safeguard both the amplifier and connected loudspeakers at all times. Per-channel front panel LED monitoring covers signal present, clip, limit, mute and protection status, with additional unit-level indicators for power on, data activity, thermal status and external mute. The temperature-controlled variable speed fan with front-to-back airflow ensures efficient thermal management throughout sustained high-power operation.
Ecler HADA-4B750 Key Features:
- 4 x 750W @ 4Ω / 2 x 1500W Bridge @ 100V/70V: Exceptional output power delivering maximum headroom for the largest and most demanding fixed installation audio systems.
- Broad Impedance Compatibility: 750W @ 4Ω, 400W @ 8Ω, 600W @ 2.7Ω, 450W @ 2Ω — wide impedance range for flexible speaker system configurations.
- 1500W Bridged at 100V/70V: Outstanding bridge mode output for the most demanding large-scale distributed audio installations.
- Class D Amplification: Efficient, high-performance Class D amplifier technology for reliable, low-heat continuous operation at very high output levels.
- Advanced Onboard DSP: Dual-core 64-bit processor with parametric EQ, multiband compressor, limiter and delay on all inputs and outputs via HADA DSP Manager.
- 4x4 Digital Matrix Mixer: Route any input to any output combination for flexible system design and signal distribution.
- 96kHz / 24-bit Audio Conversion: High-resolution audio processing with 113dB dynamic range and 500 microsecond analogue-to-analogue latency.
- Crosstalk > 80dB at 1kHz: Superior channel separation for demanding multi-zone installations.
- Power Factor Correction > 0.96: Highly efficient mains power usage at elevated output levels.
- HADA DSP Manager Software: Full device configuration, preset management and monitoring via Ethernet and embedded web application.
- TCP/IP Third-Party Control: Compatible with a wide range of building management and AV control platforms via network.
- 4 x GPI Inputs: Remote volume control from external control devices via rear panel GPI (0–3.3V).
- External MUTE Input: Dry contact closure for integration with fire detection and other safety systems.
- Front Panel Attenuators: Direct local level control per output channel.
- Preset Management: Save and recall complete system configurations for rapid deployment and system recall.
- Comprehensive Protection: DC, HF, short-circuit and thermal protection for total reliability in any installation environment.
- Per-Channel LED Monitoring: Signal present, clip, limit, mute and protection status LEDs per channel.
- Temperature-Controlled Fan Cooling: Variable speed front-to-back airflow for efficient thermal management during sustained high-power operation.
- Low Standby Power: Just 10W standby consumption for energy-efficient operation during periods of inactivity.
- Compact 2RU Format: 482.6 x 88 x 281.5mm for efficient use of rack space despite exceptional power output.
-
Desktop & Rack Mountable: Includes desktop feet and 19" rack installation hardware as standard.
SPECS & DOWNLOADS
Ecler HADA-4B750 Specifications:
Download the PDF Data Sheet HERE >
Channels & Configuration
- Output Channels: 4
- Input Channels: 4 analogue
- Input Connection: 3-pin Euroblock (balanced), pitch 3.5mm
- Output Connection: 2-pin Euroblock
- Input Configuration: 4x4 digital matrix mixer
- Output Configuration: Lo-Z/Hi-Z, 70V/100V (bridge), 4Ω/8Ω (software selectable per channel/pair)
Output Power
- Max Output Power @ 8Ω: 400W (all channels driven, 1% THD)
- Max Output Power @ 4Ω: 750W (all channels driven, 1% THD)
- Max Output Power @ 2.7Ω: 600W (all channels driven, 1% THD)
- Max Output Power @ 2Ω: 450W (all channels driven, 1% THD)
- Max Output Power @ 4Ω Bridge: 1400W (all channels driven, 1% THD)
- Max Output Power @ 8Ω Bridge: 1250W (all channels driven, 1% THD)
- Max Output Power @ 100V: 1500W bridge (all channels driven, 1% THD)
- Max Output Power @ 70V: 1500W bridge (all channels driven, 1% THD)
Signal
- Voltage Gain: 31–38 dBV (33.2–40.2 dBu)
- Input Sensitivity: -12 to +12 dBV (-9.8 to +14.2 dBu)
- Input Impedance: 21kΩ (balanced)
- Max Input Level: 22 dBV (24.2 dBu)
- Frequency Response: 20Hz–20kHz (-3dB, 1W any load)
- THD+Noise: < 0.01% (0.015% typical @ 1kHz, 0.1W to full power)
- Crosstalk: > 80dB at 1kHz
DSP
- Processor: Dual-core 64-bit
- Sampling Rate: 96kHz
- Resolution: 24-bit
- Dynamic Range: 113dB
- Latency: 500 microseconds (analogue in to analogue out)
- Input Processing: Parametric EQ, delay, limiter, multiband compressor
- Output Processing: Parametric EQ, delay, limiter, multiband compressor
- Matrix Mixer: 4x4
- Preset Management: Yes, via HADA DSP Manager
Control & Connectivity
- Network: Ethernet 100Mbps (CAT5, up to 100m)
- Software: HADA DSP Manager (embedded web application)
- Third-Party Control: TCP/IP
- GPI Inputs: 4 x (0–3.3V), 5-pin Euroblock
- External MUTE: Dry contact, 2-pin Euroblock
- Front Panel Controls: 4 x attenuator knobs, RUN/SLEEP button
- Power ON/OFF: Rear panel switch
Monitoring (LED)
- Per Channel: Signal present (SP), clip, limit, mute, protect
- Per Unit: Power on, data, thermal, external mute
Protection
- DC Protection: Yes
- HF Protection: Yes
- Short-Circuit Protection: Yes (auto reset)
- Thermal Protection: Power reduction at 90°C, full mute at 100°C
Electrical
- Amplifier Class: Class D
- Power Supply: Universal SMPS with PFC (> 0.96)
- Mains Input: 100–240V AC, 50–60Hz (±10%)
- Mains Connector: IEC C14
- Power Consumption (Idle): 23W
- Power Consumption (Standby): 10W
- Cooling: Temperature-controlled variable speed fan, front-to-back airflow
- Maximum Fan Noise: 46dB at 1m
Physical
- Installation Format: 19" rack (2RU) or desktop
- Dimensions (W x H x D): 482.6 x 88 x 281.5mm
- Weight: 6.0kg
- Operating Temperature: 0°C to +40°C
- Operating Humidity: 5–80% RH, non-condensing
- Included Accessories: EU mains cord, Euroblock connectors, desktop feet, 19" rack installation hardware
