Ecler AURA-4B900 4-Channel 4 x 900W Class-D Power Amplifier - 100V & 2/4/8 Ohm

Name: Ecler AURA-4B900 4-Channel 4 x 900W Class-D Power Amplifier - 100V & 2/4/8 Ohm
Brand: Ecler
SKU: AURA-4B900
Price: 1609.0 GBP
Availability: InStock

by Ecler

SKU AURA-4B900

£1,609.00 (inc. VAT) - £1,609.00 (inc. VAT)

£1,609.00 (inc. VAT)

£1,609.00 (inc. VAT) - £1,609.00 (inc. VAT)

£1,609.00 (inc. VAT)

DETAILS

The Ecler AURA-4B900 is a 4-Channel 4 x 900W Class-D Power Amplifier with transformer isolated output, low and high impedance compatibility, dual and bridge mode operation, anti-clip system and auto standby.

Delivering high-power multi-channel amplification for the most demanding multi-zone fixed installation environments.

The Ecler AURA-4B900 is the most powerful four-channel model in the AURA series, stepping up to 4 x 900W RMS at 4 Ohm for the largest and most demanding multi-zone fixed installation audio systems. Like all AURA series amplifiers, it has been engineered with the highest levels of robustness and reliability for long-lasting performance in continuous professional operation.

A notable feature that distinguishes the AURA-4B900 from the lower-powered AURA models is its Class D amplifier with transformer isolated output — providing enhanced electrical isolation between the amplifier and connected loudspeakers for improved safety and compatibility across complex installation environments. With an impressive 80% efficiency rating, the AURA-4B900 also delivers its substantial output power with minimal waste heat, making it a practical and energy-conscious choice for large-scale installations.

Flexible Output Configuration for Low & High Impedance Systems

The AURA-4B900 supports the same broad range of output configurations as the rest of the AURA series but with substantially increased power output across all four channels. In standard dual mode, all four channels deliver 900W into 4 Ohm loads, 450W into 8 Ohm loads and up to 1000W into 2 Ohm loads. In bridge mode, channel pairs deliver an impressive 2000W at 4 Ohm and 1600W at 8 Ohm for demanding mono applications requiring maximum output from a single channel pair. For high-impedance distributed audio installations, the AURA-4B900 supports both 70V and 100V line operation at 900W per channel, switchable via rear panel dipswitch per channel pair alongside dual/bridge and low/high impedance mode selection. An input link to CH1 selector per input allows individual channels to be linked to the first input for simplified mono or zone distribution applications.

Practical Control & Security Features

The AURA-4B900 retains the same practical control and security features as the rest of the AURA range across all four channels. Front panel volume control knobs per channel can be locked via rear panel switches, preventing unauthorised level adjustment in public-facing or unattended installations. Each channel can be switched between standard volume control and bypass mode. An auto standby function — selectable from the front panel — automatically places the amplifier into a low-power standby state during signal inactivity, consuming just 2.3W in standby for highly energy-efficient operation despite the amplifier's substantial output capability. A front panel power on/off switch and dedicated auto standby on/off LED provide clear and convenient system status monitoring.

Comprehensive Protection & Monitoring

The AURA-4B900 is equipped with the same full suite of protection systems as the rest of the AURA series. DC protection, HF protection, short-circuit protection, clip limiter and thermal protection all work together to safeguard both the amplifier and connected loudspeakers during continuous high-power operation across all four channels. The transformer isolated output provides additional protection and electrical isolation for connected loudspeakers and installation wiring. Front panel LED monitoring covers signal present, clip, protect, standby, thermal and link status per channel and per channel pair, with a unit-level power on LED providing clear overall system status. Twin fans provide active cooling throughout sustained high-power use.

Ecler AURA-4B900 Key Features:

4 x 900W RMS @ 4Ω / 2000W Bridge @ 4Ω Per Channel Pair: High-power four-channel Class D amplification delivering serious headroom for the most demanding multi-zone fixed installation audio systems.
Transformer Isolated Output: Enhanced electrical isolation between amplifier and loudspeakers for improved safety and compatibility in complex installation environments.
80% Efficiency Rating: The highest efficiency rating in the AURA range, delivering substantial output power with minimal waste heat generation.
Four Independent Channels: Individual volume control, input link and output mode selection per channel for flexible multi-zone system design.
Low & High Impedance Compatibility: Supports 2Ω, 4Ω and 8Ω low-impedance and 70V/100V high-impedance operation via rear panel dipswitch per channel pair.
Dual & Bridge Mode: Switchable per channel pair between dual stereo and bridged mono operation for flexible system configuration.
Front Panel Volume Lock: Rear panel switches lock front panel volume knobs to prevent unauthorised adjustment in public-facing or unattended installations.
Input Link to CH1: Per-channel input link selector for simplified mono or zone distribution applications.
Auto Standby Function: Automatically enters low-power standby (2.3W) during signal inactivity for energy-efficient operation.
Anti-Clip System: Protects against clipping distortion for clean, consistent audio performance at all output levels.
Comprehensive Protection: DC, HF, short-circuit, clip limiter and thermal protection for total reliability in continuous professional operation.
Euroblock Input & Output Connectors: With anti-pulling locking system for secure, professional-grade wiring in permanent installations.
Per-Channel LED Monitoring: Signal present, clip, protect, standby, thermal and link status indicators for clear front panel system monitoring.
Twin Fan Cooling: Active cooling for sustained high-power operation across all four channels.
Power Factor Correction > 0.95: Highly efficient mains power usage across the full operating voltage range.
Universal Mains Input: 100–240V AC, 50–60Hz for worldwide installation compatibility.
Compact 1RU Format: 484 x 44 x 378mm — four channels of 900W in a single rack unit.

SPECS & DOWNLOADS

Ecler AURA-4B900 Specifications:

Download the PDF Data Sheet HERE >

Channels & Configuration

Output Channels: 4
Input Channels: 4
Input Connection: 3-pin Euroblock (balanced), pitch 3.5mm
Output Connection: 2-pin Euroblock, pitch 7.62mm
Input Link: Input link to CH1 selector per input
Output Mode: Dual/Bridge, Lo-Z/70V/100V (rear panel dipswitch per channel pair)

Output Power (All Channels Driven, 1kHz, CF9dB, 1% THD)

Max Output Power @ 8Ω: 450W
Max Output Power @ 4Ω: 900W
Max Output Power @ 2Ω: 1000W
Max Output Power @ 4Ω Bridge: 2000W
Max Output Power @ 8Ω Bridge: 1600W
Max Output Power @ 100V: 900W
Max Output Power @ 70V: 900W

Signal

Voltage Gain: 34dB
Input Sensitivity: 0 dBV (1 Vrms)
Input Impedance: 20kΩ (balanced)
Max Input Level: +18 dBV
Frequency Response: 15Hz – 30kHz
THD+Noise: < 0.01%
SNR: 100 dBA
Crosstalk: > 70dB
CMRR: > 55dB (typical)
Damping Factor: > 150

Control

Front Panel Controls: Volume knob per channel (VOL/BYPASS), auto standby button, power on/off switch
Volume Lock: Rear panel switches per channel
Output Mode Selection: Rear panel dipswitch per channel pair (dual/bridge, Lo-Z/70V/100V)
Indicators: Signal (green), clip (red), protect (red), auto standby on/off (green), standby/mute (orange), thermal (orange), power on (green), link (white)

Protection

DC Protection: Yes
HF Protection: Yes
Short-Circuit Protection: Yes
Clip Limiter: Yes
Thermal Protection: Yes

Electrical

Amplifier Class: Class D with transformer isolated output
Efficiency: 80%
Power Supply: Universal regulated SMPS with PFC (> 0.95)
Mains Input: 100–240V AC, 50–60Hz (±10%)
Mains Connector: IEC C14
Standby Power: 2.3W
Cooling: 2 x fans
Maximum Fan Noise: 57 dBA

Physical

Installation Format: 19" rack, 1RU
Dimensions (W x H x D): 484 x 44 x 378mm
Weight: 7.7kg
Operating Temperature: -10°C to +50°C
Operating Humidity: 5–85% RH, non-condensing

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60 Day Returns Policy

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1. Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product’s return.

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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:

1. 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.

2. 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.

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