AT-SSA-4000 DP: 400-Watt 7-Channel Professional PA Amplifier with USB/SD/MP3 and Bluetooth
The AT-SSA-4000 DP represents the next generation of professional public address powerhouses. Built for superior performance and reliability, this 400W mixer-amplifier is the ideal central unit for large venues, including schools, factories, hotels, and places of worship that require powerful, clear, and feature-rich audio distribution.
Key Features:-
- Robust Power: 400W RMS rated output for large-scale PA installations.
- 7 Input Mixer: Dedicated volume controls for 7 input channels (Mic/Aux), accommodating multiple microphones and external sources.
- Wireless Connectivity: Built-in Bluetooth for convenient audio streaming.
- Digital Media Playback: Supports USB, SD/MMC card playback via the integrated player.
- Versatile Output: Supports both Low Impedance (4/8Omega) and High-Voltage (70V/100V Line) speaker systems.
- Emergency Ready: AC operation with a 36V DC Battery Backup input.
- Tone Control: Master Bass and Treble controls for overall sound shaping.
- Protection: Features overload and short-circuit protection circuits.
Specifications:-
- Power Output (RMS): 400W
- Frequency Response: 50 Hz to 15,000 Hz (pm 3dB)
- Input Sensitivity (Mic): 0.8mV/4.7kOmega (for 7 inputs)
- Input Sensitivity (Aux): 100mV/470kOmega
- Digital Player: USB, SD Card, MP3, Bluetooth
- Speaker Outputs: 4Omega, 8Omega, 70V Line, 100V Line
- Tone Controls: Bass (pm 10dB at 100 Hz); Treble (pm 10dB at 10 kHz)
- Power Supply: 220 – 240V AC (50/60 Hz) / 36V DC (Battery)
- Dimensions: Rack-mountable design, approximately 480 x 160 x 360 mm.



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