Pulsating noise after installing amp, when played trough Yatour CD Music Changer

[antibiotic1]

Hello friends, i finally finished the instalation of my amp on my mazda 3.

As amplifier i have precision power ppi 640.5

door speakers jbl gt7-68

sub jbl gt5 1204 br

All this is with stock head unit and with addition of PAC LOC for mazda 3.

After i set up everything, i've found 1 problem. When playing music from Yatour CD Music Changer i have pulsating noise exactly every 1 second, but if i switch to fm stereo this noise is gone.

Can i somehow fix this , can that be repaired if you think the Yatour is faulty or i can do something?

I have recorded how that sounds here is a link:

http://vocaroo.com/i/s0OvLFiUgY4x

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