Alfatron PA100W

Categories: ,


Alfatron PA100W

The ALF-PA100W is a compact-sized digital amplifier (Class-D) with 3 inputs (1 L+R stereo audio, 1 analog audio, 1 optical fiber audio).

It features switchable stereo 2×50 Watt @ 8 ohm or mono 1×100 Watt @ 4 ohm output and boasts complete EQ adjustment and intuitive work status display, making it an ideal addition to a classroom or conference room application.


Product Features

  • 3 Audio inputs: 1L+R stereo, 1 analog, 1 optical fiber
  • Switchable stereo/mono output
  • Complete EQ management: including LINE, BASS, TREBLE
  • Easy adjustable volume via a rotary knob
  • Audio loop output
  • Intuitive LED indicators for the input source, control and volume setting
  • Controllable via RS232, IR, TCP/IP (optional), and Web-based GUI.
  • Power-off memory

Additional information

Weight 0.72 kg
Dimensions 14.8 × 4.4 × 16.5 cm


Input  Output 
 Input Signal  1x L+R stereo  audio 1x 3.5mm analog audio 1x Optical Fiber audio   Output Signal  1x LOOP   2x Stereo audio/ 1 Mono audio 
 Connectors  2x RCA   1x 3.5mm TRS plug 1x SPDIF   Connectors  1x 3.5mm jack 1x 4-pin 5.08mm connector 
Input impedance  >10KΩ  Damping coefficient  >100 
 Control Ports  1x RS232 (3-pin pluggable terminal block) 1x IR IN (3.5mm female)    1x TCP/IP (RJ45 female, optional) 
Panel Control  Front panel buttons& rear panel switcher 
SNR  80dB  THD+ Noise  1%@1KHz 50W 
Separation  75dB 20Hz20KHz  Damping coefficient  100 
Voltage Gain  32dB  Output Power  1×100W@4Ω/2×50W@8Ω 
Power Supply  DC 36V 2.66A  Power Consumption  1.48W 
Work Temperature  0~50   Reference Humility  10%90% 
Dimensions (W*H*D)  148 x44 x165 mm  Weight  0.72kg 

Download Image

Download Image




Technical Sheet

User Manual



1.   Q – How many inputs does the PA100W support?
A – 3. 1 x RCA, 1 x 3.5mm jack and optical.

2.  Q – Can I use this amplifier with a 100v system?
A – No, the amplifier is a low impedance amplifier. Please see our PA100V amplifier.

3.  Q – What is the output of the amplifier?
A – 100 watts @ 4 Ohm and 2 x 50 watts at 8 Ohm.

4.  Q – How do I control the amplifier?
A – It is controllable via IR remote control, RS232 and via the TCP/IP port.

5.  Q – Am I able to loop this unit with another PA100W?
A – Yes, there is a loop out.