Something fishy with DAC

[jimbones]

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?

[richidoo]

Flat is so pro-audio.

We pay extra for the hifi "voicing."       

[jimbones]

Flat is so pro-audio.

We pay extra for the hifi "voicing."       

[Face]

I would love to know which DAC this is...

[sleepyguy24]

Maybe a Burson 160D?

[jimbones]

Burson 160D .. as the man said.

[mgalusha]

Burson 160D .. as the man said.

I measured one of the Burson dac/headphone amps for a friend, IIRC the frequency response did vary with the position of the level control, not good practice IMO. 

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[woofersus]

I can't imagine this is common practice among all high end DAC's.  If Burson products do it (on purpose or otherwise) it certainly isn't something I would choose to buy.

[mgalusha]

I can't imagine this is common practice among all high end DAC's.  If Burson products do it (on purpose or otherwise) it certainly isn't something I would choose to buy.

Agreed, I doubt it's common and I was surprised at the result. IIRC there was a fixed output which was OK but it's been a while and time makes the memory a little fuzzy.

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