400W High-Fidelity 2 Channel Power Amplifier Professional Audio Amplifier for Audiophiles
Product Details
| Model NO.: | MP-2604 | Used For: | Professional |
|---|---|---|---|
| Tube Type: | Transistor Amplifier | Function: | Post Amplifier, Amplifier Combined, Pre-amplifier |
| Sound Channel: | 2CH | Output Number: | 4 |
| Voltage: | AC 220V | Element Number: | Monoamplifier |
| Conductive Mode: | AB | Harmonic Distortion (1kHz,8ohms: | <0.01% |
| Frequency Response: | 20Hz-20kHz: +/-1dB | Sensitivity: | 0.775V |
| Signal-to-Noise Ratio: | ≥100dB (a-Weighted) | Output Cascade: | Class-2h |
| Dimensions(W*D*H): | 482mm×346mm×88mm | Transport Package: | Strong Packing |
| Specification: | Black | Trademark: | MEKEY |
| Origin: | Guangzhou, China | HS Code: | 8518400090 |
| Highlight |
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Product Description
The Powermax 400 Watts High-Fidelity Power Amplifier is engineered for audiophiles and professional sound applications demanding uncompromising performance. Built into a rugged 2U metal chassis, this dual-channel amplifier delivers exceptional clarity, headroom, and reliability for live performances, installations, and studio environments.


| Rated Output Power (8Ω Stereo) | 400W × 2 |
|---|---|
| Rated Output Power (4Ω Stereo) | 700W × 2 |
| Rated Bridged Output Power (8Ω) | 1250W |
| Power Supply | AC220V (customizable AC110V), range AC190V–250V, 50/60Hz |
| Structure | 2U metal chassis design |
| Number of Channels | 2CH |
| Harmonic Distortion (1kHz, 8Ω) | <0.01% |
| Frequency Response | 20Hz–20kHz: ±1dB |
| Sensitivity | 0.775V |
| Signal-to-Noise Ratio | ≥100dB (A-weighted) |
| Damping Coefficient | ≥300 @ 8Ω |
| Conversion Rate | 25V/µs |
| Input Impedance | Balanced 20K, Unbalanced 10K |
| Channel Isolation | 60dB @ 8Ω, 1kHz |
| Output Cascade | Class-2H |
| LED Indicator | Power / Signal / Distortion / Clipping |
| Input Connector | Balanced XLR male and female sockets |
| Output Connector | SPEAKON, terminal post |
| Cooling | Dual-speed fans, front-to-rear air intake |
| Protection | Overheat, overload, short circuit, DC output, soft start, impact limiting |
| Dimensions (W × D × H) | 482mm × 346mm × 88mm |



Guangzhou Jiuding Audio-Visual Technology Co., Ltd. is a comprehensive enterprise integrating R&D, production, and sales, and owns the high-quality "MEKEY" brand of professional audio equipment.
The company operates a large modern industrial plant exceeding 6,000 square meters, equipped with advanced processing lines, complete detection systems, and core technologies such as crossover boards and audio processing systems. Facilities include dedicated R&D, production, quality inspection, and a product exhibition hall.
Guangzhou Jiuding Audio-Visual Technology Co., Ltd. offers a full product range and overall solutions including design, bidding, and tendering. Products include professional speakers, power amplifiers, conference systems, and more, suitable for a wide variety of performances. With over 200,000 successful cases, our reputation is highly esteemed.







1. Is the product a brand-new original factory product?
All products are brand-new, original factory items. We provide authorization and commitment letters.
2. Can you provide samples for bulk orders?
Free samples are available before bulk orders; shipping cost is covered by the customer.
3. What is the delivery time?
Delivery depends on quantity; production for bulk orders is 7 to 12 days.
4. What are the logistics methods?
Sea and air freight are offered; no air shipping for battery items. Contact customer service for details.
5. What is the payment method?
Payment is required before shipment. Deposit depends on order amount.
6. What is the product warranty period?
Standard warranty is two years from shipment. Contact customer service for extensions.
7. Can you provide after-sales service?
We offer equipment failure and technical service support. Products are quality managed; failures are rare. We provide replacement or repair for failures, and a 24-hour hotline and online support for technical services.
Product Highlights
Product OverviewThe Powermax 400 Watts High-Fidelity Power Amplifier is engineered for audiophiles and professional sound applications demanding uncompromising performance. Built into a rugged 2U metal chassis, this dual-channel amplifier delivers exceptional clarity, headroom, and reliability for ...
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