Alfatron ALF-250W-UB Mixer Amplifier

The ALF-250W-UB Compact Mixer amplifier has a built-in Media player with Bluetooth, onboard FM tuner and MP3 player. Front panel microphone input with priority function, rear panel balanced microphone input with phantom power. Emergency input function. Dual RCA line inputs and RCA aux out. 250W at 70/100V and 4-16 Ohms, 24V backup power input ,This is a Class-D Amplifier.

Product  Features

• Speaker Output of 100V or 70V & 4 -16 Ohms rated power output of 250W
• USB, FM Radio & Bluetooth with remote control
• 2 MIC inputs, 1 EMC input, 2 Line inputs, 1 Line output
• Individual Volume control for Mic 1-2, Aux 1-2,  bass/treble, and master volume control
• Supports both AC100-240V & 24V power Supply
• Priority: EMC > MIC1>Others
• LED indicators for power, clip, protect and signal
• With Short-Circuit, clip, overload and high temp protection.
• Ideal for small venues such as Classrooms, retail stores, Coffee shops, restaurants, etc
• Class-D

Power Output

• Rated Power: 250W

• Speaker Outputs:

  • 100V line

  • 70V line

  • 4 Ohm / 8 Ohm / 16 Ohm

Inputs & Connectivity

• Mic 1: Unbalanced Jack input

• Mic 2: Balanced XLR input

• Line 1–2: RCA inputs

• Line Output: RCA

• EMC input (Emergency priority input)

Input Sensitivity

• MIC 1–2: 5mV

• AUX 1–2: 350mV

• EMC MIC: 350mV

Frequency Response

• MIC: 180Hz – 10kHz (±3dB)

• AUX: 70Hz – 16kHz (±3dB)

Audio Performance

• THD: < 1% @ 1kHz

• Noise: < 5mV (4 Ohm load output terminal)

Tone Controls

• Bass Adjustment: ±10dB (±2dB)

• Treble Adjustment: ±10dB (±2dB)

Protection

• Short Circuit Protection

• Clip Overload Protection

• High Temperature Protection

Priority System

EMC > MIC1 > Other inputs

Power Supply

• AC 110–220V