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MDAC help
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<blockquote data-quote="user 997" data-source="post: 436349" data-attributes="member: 997"><p>To get rid of the noise on USB you have to install the latest firmware. I had the same issue when using the MDAC with my Macbook Air, but a firmware update eventually solved it. You can verify the problem by enabling the USB buffer display in the menu options. With the broken firmware you will see the buffer runs empty at times and those coincide with the noise. As far as I remember you have to update the MDAC firmware using the "terminal".</p><p></p><p>Unfortunately USB is limited to 24-bit/96KHz, unlike most modern DACs that support 192Khz and higher. Optical is a bit of hit and miss affair as the ESS9018 setup on the MDAC is very sensitive to jitter. I couldn't even get it to work with the Apple Airport Express due to the poor quality of the optical port on that unit. I suggest buying a good USB->SPDIF converter if you require higher sample rate support.</p></blockquote><p></p>
[QUOTE="user 997, post: 436349, member: 997"] To get rid of the noise on USB you have to install the latest firmware. I had the same issue when using the MDAC with my Macbook Air, but a firmware update eventually solved it. You can verify the problem by enabling the USB buffer display in the menu options. With the broken firmware you will see the buffer runs empty at times and those coincide with the noise. As far as I remember you have to update the MDAC firmware using the "terminal". Unfortunately USB is limited to 24-bit/96KHz, unlike most modern DACs that support 192Khz and higher. Optical is a bit of hit and miss affair as the ESS9018 setup on the MDAC is very sensitive to jitter. I couldn't even get it to work with the Apple Airport Express due to the poor quality of the optical port on that unit. I suggest buying a good USB->SPDIF converter if you require higher sample rate support. [/QUOTE]
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