CMX EA-500A USB/SD & FM & Bluetooth Mixer Amplifier

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Key Features:

• Model: EA-500A

• Rated Power Output: 500W

• Speaker Outputs: 100V or 70V & 4-16Ω

• Power Supply: 230V AC, 50-60Hz

• Protection: short-circuit, clip, overload, and high temp protection


The CMX EA-500A USB/SD & FM & Bluetooth Mixer Amplifier is a versatile audio device designed to meet the demands of modern audio applications. Combining multiple features in a single unit, this mixer amplifier is ideal for various settings, including commercial establishments, schools, public address systems, and more. Here’s a description highlighting its key features:

Key Features:

  1. Multiple Input Sources:
    • The EA-500A offers various input options, including USB and SD card slots, FM radio, and Bluetooth connectivity. This allows users to play audio from different sources, providing flexibility for diverse audio requirements.
  2. Bluetooth Connectivity:
    • With built-in Bluetooth capability, the amplifier enables wireless audio streaming from compatible devices such as smartphones, tablets, and laptops. This feature adds convenience for playing music or making presentations without the need for physical connections.
  3. USB and SD Card Playback:
    • The USB and SD card slots allow direct playback of audio files stored on USB drives or SD cards. This is convenient for playing pre-recorded content or music without the need for an external source.
  4. FM Radio Tuner:
    • The integrated FM radio tuner provides access to local radio stations. Users can easily tune in to their preferred radio channels for news, music, or other broadcasts directly through the amplifier.
  5. Mixer Functionality:
    • The mixer function allows users to control and balance audio from different sources. It typically includes features such as volume control, tone adjustments (bass and treble), and individual channel controls, providing users with precise audio customization.
  6. Amplification Power:
    • The EA-500A is equipped with an amplifier that provides ample power to drive connected speakers. The power output is suitable for small to medium-sized venues, making it suitable for classrooms, meeting rooms, and commercial spaces.
  7. Compact and Rack-Mountable Design:
    • The compact design of the EA-500A makes it suitable for installation in various environments. Additionally, it may be rack-mountable, allowing for integration into audio setups with standard rack systems.
  8. User-Friendly Controls:
    • The amplifier features user-friendly controls and an interface that allows easy operation. This includes accessible knobs, buttons, and LED indicators for adjusting settings and monitoring the status of the amplifier.
  9. Versatile Applications:
    • Designed for versatility, the EA-500A is suitable for a range of applications, including background music systems, public address systems, educational settings, and more. Its multifunctional capabilities make it adaptable to different audio requirements.
  10. Auxiliary Inputs and Outputs:
    • Additional auxiliary inputs and outputs may be included for connecting external audio sources or expanding the system. These connections enhance the overall connectivity and functionality of the amplifier.
  11. Remote Control:
    • Some versions of the EA-500A may come with a remote control, providing users with convenient wireless control over various functions, including volume adjustment, source selection, and playback controls.

In summary, the CMX EA-500A USB/SD & FM & Bluetooth Mixer Amplifier is a comprehensive audio solution that combines multiple functions into a single unit. Its diverse input options, Bluetooth connectivity, and user-friendly controls make it a valuable tool for creating and managing audio setups in various environments.

PA Amplifier with USB/SD & FM & Blue Tooth
Rated Power Output
Speaker Outputs
100V or 70V & 4Ohms-8 Ohms-16 Ohms
Mic1 input by balanced XLR with phantom power 

Input2-3 inputs Mic/Line switchable unbalanced 6.3mm phone jack

Line1-2 inputs by RCA; Line output by RCA

Microphone1-3, line1-2 and Mp3/FM, bass/treble and master
MIC1-3: 5-8mV, 600Ω; Line, 150-470mV, 10KΩ, unbalanced RCA
Line Out
Frequency Response
S/N Ratio
Line ≥ 85dB, Mic≥ 72dB
Less than 0.5%
short-circuit, clip, overload and temp protection
Power Consumption
Power Supply
AC110 or 220V & 24V DC /50-60Hz


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