Alfatron 120W-UB

Mixer amplifier with built-in Media player and Bluetooth

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Alfatron 120W-UB

The Alfatron 120W-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, and rear panel balanced microphone input with phantom power. Emergency input function. Dual RCA line inputs and RCA aux out. 120W 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 120W
  • 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


Description PA Amplifier with USB/SD & FM & Bluetooth
Rated power 120W
Speaker Outputs 100V or 70V & 4Ohms-8 Ohms-16 Ohms
Connector Mic1 input by unbalance 6.3mm phone jack MIC 2 balance XLR socket

Line1-2 inputs by RCA; Line output by RCA

Attenuation Microphone1-2, line1-2 and Mp3/FM, bass/treble and master
MIC1 input sensitivity 5mV
MIC2 input sensitivity 5mV
MIC3 input sensitivity 5mV
AUX1 input sensitivity 350mV
AUX2 input sensitivity 350mV
EMC input sensitivity 350mV
MIC frequency response 180Hz~10kHz(±3dB)
AUX frequency response 70Hz~16kHz(±3dB)
Noise <5mV (4 ohm load output terminal)
THD <1% 1KHz
Protection Short-circuit, clip, overload and high temp protection
Treble adjustment 10dB(±2)
Bass adjustment 10dB(±2)
Rated power Supply AC~110-220V
Rated outpu voltage 120W/4Ω, AC220V
Priority EMC > MIC1 > others
Machine size(L×W×H) 247*198*66mm
Packing size 343*302*121mm (1PS)
Maximum packing size 630*355*283mm (4PS)
Net Weight 2.6kg
Gross Weight 3.25Kg

Technical specifications are subject to change without prior notice.

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Technical Sheet

User Manual





1. Q – How many inputs does the 120W-UB support?

    A – 5. 2 x microphone, 2 x RCA and EMC. Also, Bluetooth, a USB input for music files as well as FM capability.

2. Q – Can I use this amplifier with a 100v system?

    A – Yes, the amplifier supports both 70v / 100v and 4 – 16 ohm.

3. Q – What is the output of the amplifier?

    A – 120 watts

4. Q – How do I control the amplifier?

    A – It is controllable via IR remote control and the front panel volume knobs.

5. Q – Does the amplifier support phantom power for condenser microphones?

    A – Yes, there is a selectable switch by the MIC2 input.