Grumpy_Mike:
Was that the one by Great Scott? If so he has, or had at the time, no idea about biasing an audio input. But the lack of any acceptable results didn’t stop him from posting this pile of crap.
Hi Mike, yeah. It was from that post. I saw some people replied that they made it so I decided to use it as part of my school project and bought all the components he suggested. But the recording did not work at all.
I am new to Arduino. Still trying to find a good example of audio recording with Max9814. 
Any pointer or advice would be great. Thanks.