Professional-grade four-channel amplifier engineered for superior audio clarity and reliable performance in demanding sound reinforcement environments.
| Average Power at 1.8Ω | 400W × 4 |
|---|---|
| Average Power at 2.4Ω | 700W × 4 |
| Voltage Gain at 8Ω | 42.0 dB |
| Amplifier Topology | Class-AB |
| Frequency Response | 20 Hz to 20 kHz (±0.5 dB) |
| Total Harmonic Distortion (THD) | <0.08% |
| Signal-to-Noise Ratio (S/N) | >98 dB |
| Damping Factor | >350 |
| Isolation / Cross-talk | >60 dB |
| Slew Rate | >25 V/μs |
| Input Sensitivity | 0.77V / 1.0V / 1.4V |
| Input Impedance (Unbalanced / Balanced) | 10 kΩ / 20 kΩ |
| Airflow | Front to back |
| Input Connectors | Balanced XLR female sockets, parallel XLR male sockets |
| Output Connectors | NL4 SPEAKON socket |
| Front Panel Controls | Power switch, volume knob (stereo) |
| Back Panel Controls | Input sensitivity switch, grounding switch, parallel selector |
| Dimensions | 483 × 360 × 88 mm |
| Packaging Dimensions | 530 × 410 × 130 mm |
| Gross Weight | 18 kg |
Guangzhou Jiuding Audio-Visual Technology excels in the research, development, production, and sales of "MEKEY" audio equipment.
Our 6,000-square-meter plant features state-of-the-art production lines and quality systems, specializing in crossover boards, speaker units, and audio processing.
Guangzhou Jiuding offers complete solutions from design to implementation. Our products — including speakers, amplifiers, and conferencing systems — are trusted in military, government, and enterprise applications, with over 200,000 successful cases.
All shipped products are brand-new and original. We provide factory authorization and commitment.
We provide free samples before bulk orders; the customer covers shipping costs.
Delivery varies by quantity. Bulk orders typically take 7–12 days.
We offer sea and air freight. Air freight is for small items and does not include batteries. Contact us for details.
Payment is made pre-shipment. Deposit is based on order amount.
Warranty is two years from shipment. Contact us to extend the warranty.
After-sales service includes failure and technical support. Quality controls minimize issues. We offer replacement or repair, plus a 24-hour hotline and online support.