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4x1800W@8Ω / 4x3150W@4Ω / 4x4500W@2Ω
DK41800 is a 2U 4-channel Class TD power amplifier featuring a dual switching power supply design for enhanced stability and reliable high-power performance. Supporting 8Ω, 4Ω, and 2Ω loads, it delivers powerful and flexible amplification for professional touring, rental, and sound reinforcement systems.
Built for stable output, verified performance,and long-term reliability
Every amplifier passes five QC inspections before shipment to ensure consistent performance.
Each unit completes an 8-hour aging test to verify stable operation under real working conditions.
High-quality copper transformers help ensure stable power output and long-term reliability.
True rated power output gives system integrators and venues dependable amplifier performance.
Long-term warranty support gives buyers confidence in product quality and after-sales service.
4x1800W@8Ω / 4x3150W@4Ω / 4x4500W@2Ω The DK41800 delivers substantial four-channel output across a wide range of speaker loads, providing the power and flexibility needed for professional sound reinforcement and large-scale audio applications.
Its Class TD amplification architecture combines efficient power conversion with a robust switching power supply, while the optimized internal design and forced-air cooling help keep the amplifier stable during continuous high-power operation.
With low distortion, high damping factor, and strong 2Ω driving capability, the DK41800 maintains controlled and consistent audio performance across demanding loads. A full set of protection functions provides additional reliability for professional use.
| Model | DK41000 | DK41300 | DK41500 | DK41800 |
|---|---|---|---|---|
| 8Ω stereo power | 4x1000W | 4x1300W | 4x1500W | 4x1800W |
| 4Ω stereo power | 4x1700W | 4x2250w | 4x2650W | 4x3150W |
| 2Ω stereo power | 4x2500W | 4x3250W | 4x3750W | 4x4500W |
| 8Ω bridge power | 2x3000W | 2x3900W | 2x4500W | 2x5400W |
| Height | 4ch/2U | |||
| Frequency response | 20Hz-20kHz/+-0.5dB | |||
| THD | <0.05% | |||
| S/N ratio | >110dB | |||
| Input sensitivity | 44dB 41dB 38dB 32dB 26dB 23dB | |||
| Damping factor | >500 | |||
| Crosstalk | >35dB | |||
| Slew rate | 20V/us | |||
| Input impendance | balance 20KΩ , unbalance 10KΩ | |||
| Cooling system | 4 pcs intelligent fan,from front to back exhaust cooling system | |||
| Protections | Power-on buffer, overheating protection, short circuit protection,output DC protection | |||
| Power supply | 185-260V/50-60Hz | |||
| Packing size | 650x625x180mm | |||
| Gross weight（KG） | 22 | |||
Guangzhou Fedaxy Audio Equipment Co., Ltd. is a professional power amplifier manufacturer headquartered in Panyu, Guangzhou, the core audio industry cluster of China. Built on over 15 years of R&D and production experience, we integrate design, production, sales and technical service under one roof.
We specialize in Class D, Class TD, Class H and Class AB amplifiers, certified with ISO9001, CE, ROHS and CB, and strictly implement 6S on-site management. More than 90% of our products are exported to over 100 countries across Europe, America, Asia and Africa.
Each amplifier passes 5 rounds of QC testing before shipment to ensure consistent performance. We conduct an 8-hour aging test to keep components stable during operation, use 100% copper transformers, guarantee real wattage output, and provide a 3-year warranty for long-term reliability.
Fedaxy ensures stable amplifier quality through standardized production, aging tests, performance testing, and efficient warehouse management
Fedaxy FAQ covers products, customization, quality control, and export support
We are a professional power amplifier manufacturer based in Panyu, Guangzhou, China. We integrate product development, production, testing, sales, and technical support under one roof.
We manufacture professional power amplifiers, including Class D, Class TD 1U, Class TD 2U/3U, Class H, and Class AB series for KTV rooms, clubs, stadiums, conference halls, stage systems, and commercial PA sound systems.
Yes. We supportOEM, ODM , OBM / OIM / SKD cooperation, including logo customization, front panel design, packaging design, product configuration adjustment, and project-based amplifier solutions for global distributors and audio brands.
Each amplifier is produced under a strict quality control process, including material inspection, PCB assembly inspection, aging test, performance testing, safety inspection, and final inspection before shipment.
Yes. More than 90% of our products are exported to overseas markets, including Asia, Africa, Europe, America, and other regions. We can support international buyers with export packaging and flexible cooperation terms.
We support common international payment methods and trade terms, including T/T, Western Union, FOB, CIF, CNF, FCA, EXW, and DDU. Shipping can be arranged through major ports such as Nansha, Shekou, Yantian, and Huangpu.
Fedaxy ensures stable amplifier quality through standardized production, aging tests, performance testing, and efficient warehouse management
Certified amplifier solutions with CE, EMC, RoHS, and LVD compliance to ensure reliable quality and international market standards
