Something is fishy with DAC
i learned something interesting about DAC's while building and testing DIY speakers.
I was measuring fr response of my speakers and was wracking my brains out because they were topping out at 13Khz. I called the manufacturer of the test equipment and they told me to bypass the DAC because expensive DAC's purposely roll off the top octave. So i did what he said and Voilia, my speakers were relatively flat up to 19khz!
I contacted the DAC manufacturere and they said it was impossible, it is my measuring technique or equipment. I don't think so. The cdp goes right up to 20khz.
Something is fishy.....am i missing something here?