Application Guide

HiFi Made Fun
www.fosiaudioshop.com
Q1. How to contact us?
Please contact us via email at [e-mail] or [e-mail].
Q2. Why the sparks flying when I plug the power cord into the amplifier?
Please plug the power cord into the amp THEN the AC outlet, plug the audio cables into amp
THEN switch on.
Some customers may see some slight sparks flying when they plug the power supply into the
amplifier, because they use it in wrong way, you need to connect the amp to the power supply
first, then plug the power supply into the 110v AC outlet, don't worry about the sparks, because
this is class d amplifier, the capacitors need to charge when the power in, it's normal and safe.
Q3. My amplifier doesn’t turn on, the power LED light never on.
Check to see that the AC power cord is securely connected to the power supply and to an AC
power outlet.
Check that the AC power outlet is supplying power.
Please change another power supply(DC12V- 24V) to have a try if you have, if the amplifier
power LED light still off, please contact seller support.
Q4. How to connect the audio system?
Step1: connect the amplifier to your speakers via banana plugs or bare wire.
Step2: connect the amplifier to power supply;
Step3: connect the power supply to AC outlet;
Step4: connect the amplifier to your audio source via RCA cable;
Step5: turn on this amplifier and volume up;
Q5. Why the LED light of the amplifier stay on even I turn off the switch of the amplifier?
The amp will off when you switch off, but it’s normal that the power LED light stay on even switch
off, the power LED light on means the power supply connected. The switch off can turn off the
amplifier as well as the speakers.
Q6. The amplifier LED on, but there is no sound out from speakers.
Recheck speaker wire connections from the amplifier to each speaker.
Verify that the amplifier and your source components are turned on.
Check that the AC wall outlet is on and working.
Check that the volume/power knob on the front panel is turned on and not set to minimum
volume.
Check that your audio sources (iPod, computer, etc) are turned on and not set to minimum
volume.
Check that the cables from your audio sources are working and are properly connected.
Q7.Sound through one speaker only.
Recheck all speaker wire connections on the speakers and the amplifier.