Ecler HADA-4B250 4-Channel 4 x 250W Networkable DSP Power Amplifier
The Ecler HADA-4B250 is a 4-Channel 4 x 250W 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 twice the output power of the HADA-4B150 for larger, more demanding fixed installation environments.
The Ecler HADA-4B250 is the higher-powered sibling of the HADA-4B150 within Ecler's HADA series of professional networkable DSP amplifiers, stepping up to four channels of 250W Class D amplification whilst retaining the same comprehensive digital signal processing, matrix mixing and network control capabilities that make the HADA series such a compelling choice for professional fixed installation audio systems.
Whether deployed in larger retail environments, educational facilities, corporate spaces, hospitality venues or public buildings requiring greater amplifier headroom and output capability, the HADA-4B250 delivers the power, flexibility and control that demanding installation projects require — all within the same compact 2RU 19" rack chassis as the HADA-4B150.
Greater Power, Same Flexible Output Configuration
The HADA-4B250 supports the same wide range of output configurations as the HADA-4B150 but with significantly increased power output. In standard stereo mode, all four channels deliver 250W into 4 Ohm or 8 Ohm low-impedance loads. In bridge mode, channel pairs deliver a substantial 500W into high-impedance 100V or 70V distributed speaker systems — making the HADA-4B250 equally well suited to driving demanding low-impedance speaker arrays and large-scale 100V line distributed audio installations. An additional operating point of 180W at 2.7 Ohm provides further flexibility for lower-impedance speaker configurations. Output mode selection per channel or channel pair is handled via the HADA DSP Manager software for precise and flexible system configuration. The improved crosstalk specification of greater than 80dB at 1kHz — compared to 60dB on the HADA-4B150 — reflects the higher-performance signal path of this more powerful model.
Advanced Onboard DSP via HADA DSP Manager
The HADA-4B250 shares the same advanced DSP engine as the HADA-4B150, 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. All configurations can be saved as presets for rapid system recall. 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-4B250 offers the same generous range of control options as the HADA-4B150. 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-4B250 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 13W.
Comprehensive Protection & Monitoring
The HADA-4B250 is equipped with the same full suite of protection circuits as the rest of the HADA series, ensuring total reliability in continuous professional operation. 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 and external mute status. The temperature-controlled variable speed fan with front-to-back airflow operates at a maximum noise level of just 40dB at 1m — quieter than the HADA-4B150 — making it an especially practical choice for noise-sensitive installation environments.
Ecler HADA-4B250 Key Features:
- 4 x 250W @ 4Ω / 2 x 500W Bridge @ 100V/70V: High-power low and high impedance output configuration supporting both direct-drive and 100V line distributed speaker systems at double the output of the HADA-4B150.
- Class D Amplification: Efficient, high-performance Class D amplifier technology for reliable, low-heat continuous operation.
- 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: Improved crosstalk performance over the HADA-4B150 for superior channel separation in demanding multi-zone installations.
- 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.
- Quiet Fan Cooling: Temperature-controlled variable speed front-to-back airflow with maximum noise of just 40dB at 1m.
- Universal SMPS with PFC: 100–240V AC, power factor correction > 0.92 for efficient mains power usage.
- Standby/Sleep Mode: 13W standby power 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.
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Desktop & Rack Mountable: Includes desktop feet and 19" rack installation hardware as standard.
SPECS & DOWNLOADS
Ecler HADA-4B250 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: 250W (all channels driven, 1% THD)
- Max Output Power @ 4Ω: 250W (all channels driven, 1% THD)
- Max Output Power @ 2.7Ω: 180W (all channels driven, 1% THD)
- Max Output Power @ 4Ω Bridge: 500W (all channels driven, 1% THD)
- Max Output Power @ 8Ω Bridge: 500W (all channels driven, 1% THD)
- Max Output Power @ 100V: 500W bridge (all channels driven, 1% THD)
- Max Output Power @ 70V: 500W bridge (all channels driven, 1% THD)
Signal
- Voltage Gain: 30–37 dBV (32.2–39.2 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 (> 0.92)
- Mains Input: 100–240V AC, 50–60Hz (±10%)
- Mains Connector: IEC C14
- Power Consumption (Idle): 19W
- Power Consumption (Standby): 13W
- Cooling: Temperature-controlled variable speed fan, front-to-back airflow
- Maximum Fan Noise: 40dB at 1m
Physical
- Installation Format: 19" rack (2RU) or desktop
- Dimensions (W x H x D): 482.6 x 88 x 281.5mm
- Weight: 5.0kg
- 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
View our shipping and delivery information below. All prices include VAT.
Important notice for non-UK orders: Any order being shipping outside of the UK will incur an import tax. See below for more information.
Cut-off Times
Orders must be placed before 3:30pm to guarantee same-day dispatch. Any orders placed after this time are not guaranteed to be shipped the same day, and are more likely to be shipped the next working day.
To guarantee Saturday Delivery, orders must ideally be placed before 2pm.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
Orders placed over the weekend or Friday after cut-off will be processed and shipped the following Monday (or Tuesday during bank holidays).
Mainland UK Delivery Charges
Note: Next-day services are classed as working days (Mon-Fri) and do not include weekends. Please choose Saturday delivery if you require the item over the weekend.
Please also note orders with a high number of boxes may be subject to an additional charge.
All delivery options will be available at the checkout stage. Please ensure you add a mobile number to your order for tracking information.
Offshore & International
We ship to Scottish Highlands, Islands, Ireland and the EU. Please see the table below for base prices. Please note that these prices are subject to change based on the number of boxes.
The following postcodes fall under 'Highlands & Islands', and are subject to the above rates/lead time.
- Scottish Highlands: FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40 (excluding PA38), PH19-26, PH30-41, PH49-50
- Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA38, PA41-49, PA60-78, PH42-44, ZE1-3
If a UK Mainland next-day service is selected at checkout, please be aware that it won't be sent on that service.
If you require a next-day service to Northern Ireland and the highlands, get in touch so we can assist further.
EU Import Tax
Any goods shipped outside of the UK, over a certain value, will incur an import tax. The cost and rate will depend on the country and the order value.
This is a legal requirement and MUST be paid prior to delivery in order to receive your goods. You will be contacted by the courier once the order is dispatched to pay the fee.
Failure to pay import tax when applicable will result in the order being shipped back to Audio Volt. Any returned goods sent back to us due to non-payment of import tax are NOT ELIGIBLE for a refund on the shipping charge.
You can obtain an import duty estimate here.
Delivery Notes
On delivery, you must inspect the goods carefully for damage as Audio Volt is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Audio Volt of such within three working days from the date of delivery.
60 Day Returns Policy
We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:
- Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
- Contact our Customer Services Team on 02476 369890 (or email info@audiovolt.co.uk). We will then send you an RMA number and a returns form, which needs to be completed and sent back with the returned item(s).
- If the order has been unpacked, re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.
- When returning an item, please obtain a proof of postage receipt from the courier.
Returned items must be mailed within 10 days of when the RMA number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.
Please note: our returns policy is quite straightforward, but there are a number of conditions that we ask our customers to comply with before applying:
- It is your responsibility to request a return. If you don't tell us you want to make a return, we don't know. Once you do tell us, we will do everything we can to action it.
- If you have not requested a return within 60 days of receiving an order, we will assume that you are intending to keep it, and we will not authorise a return.
- We always refund the payment according to how the original purchase was made and aim to do so within 72 hours of the return being received by us.
- Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.
- Delivery charges will not be refunded unless the delivered goods are faulty.
- Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
- Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369890 if you believe your item has developed a fault.
Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Audio Volt to process the return quickly.
Any Questions?
If you have any questions about our returns policy, please telephone us on 02476 369890 or email us at info@audiovolt.co.uk.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
