250 W mono amplifier module with integrated DSP.
Ideal for active subwoofers or single-way monitors
Ncore® technology in Class D with 92% efficiency
DSP with 15 biquads, 3 presets and adjustments via HFD software
Frequency response: 10 Hz – 50 kHz | SNR: 121 dB | THD+N: 0.0015%
Analog inputs: RCA and XLR Speaker output and XLR output
USB for configuration (no audio), no network or Bluetooth
Protection against clipping, temperature and filter errors
Automatic on/off and source selection
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Hypex FA251 FusionAmp. Mono Amplifier Module with DSP
The Hypex FA251 is a high-performance mono plate amplifier with integrated DSP, designed for active subwoofers or single-way active monitors. Delivering up to 250 W into 4 ohms, the FA251 combines Hypex’s acclaimed Ncore® Class D amplifier technology with a powerful DSP engine and universal SMPS power supply in one compact module.
Key Features
Mono amplifier module with 250 W output (4 ohms)
Ncore® Class D amplification
Integrated DSP and DAC
15 biquads per channel
Three selectable filter presets
Automatic source detection and signal sensing
Auto standby and configurable BTL capability
Advanced protections: clip, thermal, and filter error
High input impedance and ultra-low distortion
Note:
The DSP comes with no default filter loaded. A filter must be created and uploaded using the Hypex Filter Design (HFD) software before operation.
Technical specifications
Power Output (Nominal)
1 x 250 W @ 4 Ω
1 x 130 W @ 8 Ω
1 x 180 W @ 2 Ω
Minimum Load Impedance
2 Ω
Amplifier Section
Technology: Ncore® Class D
Efficiency: 92% @ full output
THD+N: 0.0015% (10–20 kHz @ 0.5 x rated power)
SNR: 121 dB
Frequency Response: 10 Hz – 50,000 Hz
Input / Output Characteristics
Input Impedance:
RCA (unbalanced): 54 kΩ
XLR (differential): 44 kΩ
XLR (common mode): 2.2 MΩ
Input Sensitivity: 1.66 Vrms for rated power
DSP & Connectivity
DSP & DAC integrated
Max Sampling Rate:
192 kHz (general)
96 kHz (optical)
USB: For configuration only (not audio streaming)
Software: Hypex Filter Design (HFD) – Windows only
Presets: 3 user-defined filter slots
EQ, Phase, and Crossover: Fully adjustable
Inputs / Outputs
Analog I/O: 1 in / 1 out
RCA: 1 in
XLR: 1 in / 1 out
Digital I/O (S/PDIF, AES/EBU, Coax): Not available
Network / Bluetooth / Pre-out: Not available
Remote Control Support: Optional (sold separately)
Power Supply
Input Voltage: 200–240 VAC ±10%
Connector: IEC C14
Current Limit: 17.5 A
Protection: Under/Overvoltage
Mechanical
Dimensions (H x W x D): 280 x 120 x 55 mm
Cutout Dimensions: 256 x 96 mm
Package Contents
1 x FA251 FusionAmp
1 x User Guide (printed)
1 x Speaker connection cable set
1 x Power cable (C13 – EU or UK)