hifi engine

Audio Refinement Complete



Audio Refinement Complete

Recently, I got this Audio Refinement Complete amplifier for free. Whenever I turn it on, I can hear a "pop" sound from the speakers. I have already turned the volume down to zero, and there is no other equipment attached to it. If I turn it on again just within one second after turning it off, then there is no "pop". I do not have such "pop" with my other amplifiers. Is there something wrong and how can this be fixed?

I also found that the remote control can only turn the amplifier on after the main AC switch (at the back) has been switched on for 30 seconds. Is this normal?

There is not much information on this amplifier on the internet. I could not find the manual. Hope someone could help on these