FU-A6K 6000W power amplifier | Powerful 2-channel amp for demanding systems

FU-A6K 6000W Power Amplifier | 2-Channel High Power PA

Discover the unparalleled power of the FU-A6K 2-channel amplifier, designed to take your audio to the next level.The versatility of the FU-A6K 6000W power amplifieradapts to various impedance configurations, ensuring clear and powerful sound at any event.Power your sound system with the FU-A6K and experience the difference. Get it today and take your audio to new heights.

FU-A6K | 4000W x 2 @ 2Ω | 6000W Bridge Power for Demanding Multi-Zone Systems

The FU-A6K 6000W power amplifier is built for audio professionals who need serious headroom in compact racks, whether for live events, fixed installations or complex multi-zone systems. With up to 4000W per channel at 2Ω, 3700W per channel at 4Ω and 3000W per channel at 8Ω, it delivers the muscle required to drive large PA speakers and subwoofers without strain. In bridge mode, the FU-A6K reaches 6000W at 4Ω, making it a powerful solution for high-demand low-frequency channels and main arrays.

Behind the performance, the FU-A6K uses high-technology, energy-saving circuitry and a follow-up DC-DC converter to maximize efficiency while protecting your investment. The 2U steel chassis with aluminum front panel, red copper heat sinks and intelligent temperature control with variable-speed cooling fan keep the amplifier running cool under stress. SMT production, “Super A class” inspired output stage behavior and carefully designed power rails help maintain clarity and punch even when the system is pushed hard night after night.

For installers and rental companies, the FU-A6K 6000W power amplifier is a versatile workhorse that adapts to different system designs and impedance loads. It can serve as the backbone of a demanding main PA, feed multiple zones in a complex installation or handle subwoofer duty in bridge mode, all from a single 2U frame. If you need maximum and efficient power for more demanding systems and complex multi-zone configurations, the FU-A6K provides the performance, reliability and flexibility to take your sound to the next level.

External Resources and Technical Information:

Professional Applications

  • Live Sound PA Systems: Main left/right amplification or dedicated subwoofer power for concerts and events.
  • Fixed Installations: Stadiums, arenas, clubs and large venues requiring high output with stable 2Ω capability.
  • Multi-Zone Systems: Complex distributed audio where one amplifier must feed several speaker lines with different impedances.
  • Touring Racks: Compact 2U form factor ideal for mobile racks where weight and space are limited.

Why Choose FEUR for your FU-A6K?

FEUR designs the FU-A6K 6000W power amplifieras a high-power tool for real-world professional use, combining serious wattage with efficient, environmentally conscious engineering. High-technology circuitry, follow-up DC-DC conversion and SMT construction mean you get stable output at 2Ω, 4Ω and 8Ω without sacrificing reliability, even in systems that run at high levels for many hours. The robust 2U steel chassis, aluminum front panel and new red copper heat sinks are built to withstand transport, intensive use and high ambient temperatures, making the FU-A6K a long-term investment instead of a short-lived commodity. For projects where equipment failure is simply not an option—festivals, churches, clubs and large events—this kind of mechanical and electronic robustness becomes a key differentiator

For contractors and integrators, the FU-A6K simplifies system design by covering multiple roles from a single amplifier frame: stereo main channels, subwoofer channels in bridge mode, or multi-zone feeds in large installations. This versatility reduces the number of different amplifier models needed in a project, which in turn simplifies wiring schemes, spare parts planning and future expansions. Intelligent temperature control and variable-speed fans help reduce noise in quieter environments like theaters and houses of worship, while still providing the cooling needed for demanding shows and high-SPL venues. When combined with clear labeling and consistent rear-panel connectivity, the FU-A6K becomes a practical choice for teams that need to deploy, reconfigure and service systems quickly in the field.

FU-A10K professional power amplifie


Rental companies and production houses benefit from a versatile amplifier that can be easily reconfigured between events, maximizing utilization and return on investment. A unit that one weekend feeds a pair of subwoofers in bridge mode can, the next weekend, power several full-range zones in stereo, without changing the core rack layout. Standardized on FEUR amplification, inventory management becomes easier: technicians conocen el comportamiento térmico, la respuesta dinámica y las protecciones de la etapa, lo que acelera tanto el montaje como la resolución de problemas. In the long run, choosing FEUR for your FU-A6K means having a trusted amplification platform that grows with your catalog of speakers and your portfolio of venues, instead of constantly mixing and matching brands with different behaviors and service policies.

SpecificationFU-A6K
DescriptionTour Grade 2 Channel
Frequency Response20Hz – 20kHz
Signal to Noise93dB
Input Sensitivity0.7V
THD at 1 kHz< 0.5%
Input Impedance20k Ohms
Input Connectors3 pin XLR
Output Connectors2 Pin Speakon
Power Consumption700W / 30A Peak
Rating: 4 Ω Stereo3700W / 73V
Rating: 8 Ω Stereo3000W / 89V
Rating: 4 Ω Bridge6000W / 118V
Rating: 8 Ω Bridge4600W / 144V
  • NAMM Member — Proud member of the National Association of Music Merchants, the global trade association for the music products industry.
  • USA Verified — Products manufactured and quality-checked under rigorous USA verification standards.
  • CE Marking — Full compliance with European Union safety, health, and environmental protection directives.
  • RoHS Compliant — Products are free from restricted hazardous substances in accordance with the RoHS directive.
  • 1× K Series power amplifier (model per order)
  • IEC power cable
  • Rack-mount hardware
  • User manual

Note: Package contents may vary by region and distribution channel. Contact your authorized FEUR PRO dealer for specific configurations.

Q: How does the K Series differ from the TRA Series?

A: The K Series uses a switching power supply optimized for tour-grade portability and high instantaneous peak power delivery. The TRA Series uses a toroidal transformer, offering superior stability in permanent installations and regions with fluctuating mains voltage.

Q: Is the FU-A10K suitable for multi-zone or bi-amp applications?

A: Yes. As a 4-channel amplifier, the FU-A10K is well-suited for distributed audio systems, bi-amping active speaker arrays, or driving multiple speaker zones from a single rack unit.

Q: What speaker systems benefit most from the FU-A14K?

A: The FU-A14K is ideal for driving large passive subwoofer stacks and high-power main PA arrays at major concerts and festival productions.

Ready to See All the Specifications?

Explore all the technical details of this model in its official datasheet. Get the information you need to integrate it into your system with total confidence. The button to open the FU-A6K technical PDF.