Hi Friends,
I wanted to know what is the purpose of DIR9001 chip. This is in context of usb to spdif convertor to or dac having optical input.
In a DAC which has optical input.
I have read and experienced that the transport which is sending music data and time signals to external DAC plays an important role. The chip (dac chip) inside transport has effect on the final sound of external dac. I have some confusion here.
Who sends the data from the transport? Is it the dac chip inside the transport or dir9001 chip inside it, or both?
The actual reason and context of asking is: recently i bought NOS dac. It is being fed with apple airport express via optical and the apple airport express has pcm2705 chip inside it. The pcm2705 is a oversampling chip with filters, which will affect sound being transmitted to external dac (nos dac).
So should i buy usb to spdif convertor to get more pure data stream? I read that such a convertor has dir9001 chip (and probably also a dac chip). Will the dac chip convert to spdif data to dir9001 chip? Do both these chips have their own independent clocks? If dir9001 alone does the spdif conversion then the dac chip does not come into picture? Or both are required to do spdif conversion?
Thanks in advance.
Amit.
I wanted to know what is the purpose of DIR9001 chip. This is in context of usb to spdif convertor to or dac having optical input.
In a DAC which has optical input.
I have read and experienced that the transport which is sending music data and time signals to external DAC plays an important role. The chip (dac chip) inside transport has effect on the final sound of external dac. I have some confusion here.
Who sends the data from the transport? Is it the dac chip inside the transport or dir9001 chip inside it, or both?
The actual reason and context of asking is: recently i bought NOS dac. It is being fed with apple airport express via optical and the apple airport express has pcm2705 chip inside it. The pcm2705 is a oversampling chip with filters, which will affect sound being transmitted to external dac (nos dac).
So should i buy usb to spdif convertor to get more pure data stream? I read that such a convertor has dir9001 chip (and probably also a dac chip). Will the dac chip convert to spdif data to dir9001 chip? Do both these chips have their own independent clocks? If dir9001 alone does the spdif conversion then the dac chip does not come into picture? Or both are required to do spdif conversion?
Thanks in advance.
Amit.
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