DSPPA MP912 – 4×120W Four-Channel Matrix Power Amplifier with Bluetooth, USB, Paging & Telephone Integration
The DSPPA MP912 is a high-power four-channel matrix amplifier designed for advanced public address systems requiring flexible audio routing, multi-zone distribution, and integrated communication features. It combines 4 independent amplification channels, Bluetooth/USB playback, remote paging support, and telephone integration, making it ideal for large commercial and industrial installations.
Technical Specifications:
Amplifier System:
- Type: Four-Channel Matrix Power Amplifier
- Model: MP912
- Rated Output Power: 4 × 120W
- Output Modes:
- 4–16Ω
- 70V / 100V constant voltage
- Channels: 4 independent output channels
Audio Inputs:
Microphone Inputs:
- 3 × balanced MIC inputs
- Phantom Power: +48V supported
- Independent gain and tone control per MIC
Line Inputs:
- 2 × line inputs (adjustable volume & tone)
- Additional AUX inputs (AUX1–AUX5 supported)
Advanced Audio Sources:
- Bluetooth streaming
- USB playback (supports MP3 / WMA / WAV / AAC up to 32GB)
- Telephone input (TEL) with adjustable volume
- Fire alarm signal input
- Bell/chime signal input
As shown in the specifications table on page 2, the system integrates multiple audio and communication sources into one platform.
Matrix & Output System:
- 4 independent output channels (CH1–CH4)
- Each channel supports:
- 4–16Ω
- 70V / 100V
- Matrix routing:
- Any input can be routed to any output channel
- Multiple sources can be mixed into one channel
According to page 2, all sound sources can be distributed flexibly across the four outputs, making it a true matrix system.
Paging & Communication Features:
- 4 remote paging microphone inputs
- Supports linking up to 8 devices
- Telephone paging integration
- Fire alarm and siren trigger
Priority system:
AUX1 → Siren → Telephone → Remote Paging → Bell → MP3 / AUX inputs
Audio Performance:
- Frequency Response: 90Hz – 20kHz
- Signal-to-Noise Ratio: ≥75dB
Provides high fidelity sound with low noise.
Tone Control:
- Bass: ±10dB @ 100Hz
- Treble: ±10dB @ 10kHz
Independent tone adjustment for each input.
Control & Interface:
- LED level indicators for each channel
- Channel monitoring output (1W / 8Ω)
- Independent volume control per channel
- Built-in MP3 display and control
From the front panel (page 3), each channel includes full control for volume, tone, and monitoring selection.
Connectivity & Integration:
- RS232 interface for system expansion
- Remote paging microphone interface (RJ45)
- Telephone interface
- 4-channel AUX output
Protection System:
- DC protection
- Overload protection
- Short-circuit protection
- Overheat protection
Ensures safe and continuous operation.
Power & Electrical:
- Power Supply: AC 220V / 50Hz
Physical Specifications:
- Dimensions: 483 × 440 × 132 mm
- Net Weight: 28 kg
- Rack Mount: Standard 19"
Key Features:
- 4×120W high-power output
- Matrix audio routing system
- Bluetooth + USB multimedia playback
- 3 MIC + multiple AUX inputs
- Remote paging + telephone integration
- Fire alarm & siren support
- Independent channel control
- RS232 integration
- Full protection system
Applications:
- Hospitals
- Factories
- Airports
- Shopping malls
- Hotels
- Schools
- Government buildings
- Large commercial facilities
- Advanced multi-zone PA systems
Connect Gates Professional Opinion:
From Connect Gates’ perspective, the MP912 is a powerful upgrade over the MP906, delivering double output per channel (120W instead of 60W). It maintains the same matrix flexibility but is better suited for larger projects with higher speaker loads. It is ideal for complex installations requiring routing, paging, and integration in one system.