48 khz seems to do the trick with the custom setup. so if i go into freac and use sample rate converter and set it to 48000 the quality seems to do well with the digital amplifier. the difference between the flac setup and the sample rate seems to be evened out properly with 48 khz sample rate. really neat i applied the change and it did real good results for my listening. 44 khz isnt proper when encoding with flac.