sudomod

Hello, I am currently having an issue with the audio coming out of the pi. It sounds pitched down and stretched. Its not a hell lot, but enough to make it noticeable.

I am currently outputting directly from my Pi, to a basic PWM audio board and into a headphone jack. I am currently testing and have yet to plug the amp. Any help is welcome.

Which pwm audio board is that? Im asumming a low pass filter board?