


Need help? Ask our experts.
Review Summary
4x Lo-Z / 2x Hi-Z
4x 125 W
4x 125 W
2x 250 W
2x 250 W
500 W
4 Input x 2 or 4 Outputs: Input, Zone, Output & Speaker Processing, plus General settings
Browser-based UI Software with Ethernet & Wi-Fi connectivity
150 W
Class D - full bandwidth PWM modulator with ultra-low distortion
70 Vp / 140 Vpp (unloaded) // Bridged 140 Vp / 280 Vpp (unloaded)
> 106 dB (A-weighted, 20 Hz - 20 kHz, 8 Ohm load)
< 0.05% (20 Hz - 20 kHz, 8 Ohm load, 3 dB below rated power)
20 Hz - 20 kHz (+/- 0.5 dB, 8 Ohm load, 3 dB below rated power)
Short circuit, DC, Under voltage, Temperature and Overload protection
Universal mains switch mode power supply with Power Factor Correction (PFC) and standby converter
32 - 104 Degree F (0 - 40 Degree C)
Universal Mains, 100V - 240V, 50Hz - 60Hz
< 0.5 W
1 % THD @ 120 Vac and 230 Vac
1.75 x 8.66 x 11.65" (44.5 x 220 x 296mm)
6.2 lbs (2.8kg)
After years of refining Class D design and providing user-friendly software, Ashly presents the FX Series FX125.4 4-Channel 125W Compact Class D Power Amplifier with DSP. This advanced piece of audio equipment takes amplification to new heights, combining power, versatility, and innovation in one compact package.
The FX Series FX125.4 is a networkable amplifier, offering both Ethernet and built-in Wi-Fi hotspot connectivity. This eliminates the need for a network router and allows for easy system configurations without the need for additional equipment like stand-alone DSP or speaker system processors.
This multi-purpose installation DSP-equipped amplifier is part of the FX series, known for its built-in Wireless-Access-Point (WAP) for simple connection and configuration via Wi-Fi. It also features an intuitive web-based software user interface. The FX125.4 comes in two configurations: 1/2 Rack Units (RU) for compact spaces and 2 RU for larger systems, making it a versatile choice for various audio setups.
Underneath its sleek exterior, the FX Series FX125.4 boasts a powerful DSP engine that can be tailored to a wide array of tasks. It offers comprehensive input, zone, output, and speaker processing, making it capable of handling diverse applications such as multi-zone music distribution for retail and restaurants, noise masking for offices and medical facilities, and media playback for hotel lobbies, retail, and museum kiosks.
The FX DSP engine provides a rich selection of functions for optimizing your system, including status display, level control and metering for Zones A-D, gain/trim, sensitivity, source select, mono/stereo, level control & metering, GPIO assignment, compressor for Zones A-D, and more.
The FX Series FX125.4 also features an intuitive software user interface that offers an easy-to-navigate workflow and quick access to advanced functions. It allows you to create, save, and load speaker presets to accommodate virtually any loudspeaker, making it a versatile choice for different zones or satellites and subs in a bar or auditorium.
The FX Series FX125.4 offers wireless access, allowing you to view and control the amplifier from virtually any PC, tablet, or smartphone. Its browser-based network interface also makes remote service and troubleshooting easier, as a technician can log in with remote access from their device without needing to download or install any software.
The FX Series FX125.4 also offers flexible amp modes, with switchable Low Z (4/8 Ohms) or Hi Z (25/70/100V) that can be selected in software. This allows you to mix and match speaker types as needed. The amplifier also offers convenient power-sharing technology that balances power between channels to meet different load requirements.
In conclusion, the FX Series FX125.4 4-Channel 125W Compact Class D Power Amplifier with DSP is a powerful, versatile, and innovative solution for your audio needs, offering advanced features and functionality in a compact and user-friendly package.