A-280 500W HD ECHO & REVERB TECHNOLOGY Karaoke Mixing Amplifier, Built-in Bluetooth, USB Playback, Feedback Eliminator

1. In order to develop the latest model with a more competitive capacity, the company's research and development team adopt numerical control plus analog circuit audio processing technology. After long-term and tens of thousands of tests, this combined power amplifier is developed.
   
2. 1n It is configured with 5.0 Bluetooth, a USB player interface. It provides three-way microphone input and optical fiber coaxial input, making it easy for engineering use. 
   
3. It is equipped with a SUB bass output interface, pure music output interface.
4. It is set with a microphone self-static noise circuit and feedback fitting circuit.
5. It is configured with HD Echo/Reverb, repeat, delay, and other functions, full electronic volume control, music change, and one key to restore the factory Settings.
6. It has perfect overheating, short circuit, DC and other speaker protection functions while being configured with temperature control cooling fan to strengthen the heat dissipation of the device.
7. It is equipped with DSP D class and power transformer.

• Built-in Microphone Feedback Eliminator
  
• Built-in HD ECHO & REVERB TECHNOLOGY (make the singing more richness and natural)
• Mic Level for Mic1, Mic2
• Music Knob Control - Music Vol, Music Key Control, 5 Bands Music Equalizer, Low Cut, Sub Vol, Sub Booster, Sub Low Pass
  
• Mic Knob Control -Mic Vol, 5 Bands Microphone Equalizer, Low Cut, Feedback Eliminator ON/OFF
• Effect Knob Control - REV (Reverb), R.D (Reverb Damping), R.P (Reverb Pre-Delay), ECH (ECHO)

Specifications:

• Power Output: 250 Watts RMS x2 (1kHz, 8Ω), Total 500 Watts RMS Output. Total 1,000 Watts MAX Output.@ 8Ω
  
• Frequency Response: 80Hz~16kHz, ± 3 dB: - 1dB
  
• S/N Ratio: 80 dB
• Music Input Sensitivity/Impedance: 260mv
• Microphone Input Sensitivity/Impedance: 22mv
• THD 20Hz - 20kHz : <0.7%
• Dimension: 25cm x 43cm x 7.5cm
• Gross Weight: 7.2 KG

Connectors:

• 4 X 1/4” Microphone Inputs  (2 front, 2 rear)
• 2 X Analog Audio RCA Inputs (VOD, AUX) 
  
• 1 X Analog Audio RCA Output (PRE OUT)
• 1 X Optical Input
• 1 X Coaxial Input
• 1 X Subwoofer Output
  
• 1 X USB 5V
  
• 2 X speaker output interface