amplify audio signal

Hi, I am using the MSGEQ7 graphic equalizer chip and am having trouble with my audio signal. The MSGEQ7 detects a signal from my computer with the volume turned all the way up, but not from my phone (I assume the two have different max outputs). I am wonderining if anyone knows a simple way to amplify an audio signal? I am a circuits novice.

Thanks

I have used this in the past:-

amp.png

Data sheet for MSGEQ7 says chip has gain 22 dB, and provide 4V DC output with only 0.3 V peak-to-peak input signal. Could you post your wiring?
There is a link to SPF shield, and it looks like they also don’t amplify input for chips.