post #496 of 1712
12/15/09 at 2:36am
Slim, thanks for the link and all your hard work, its been an interesting read.
Are you sure that the 14 bit resolution refers to the CM108 driver, it seemed to only be for the CMI 8738 driver, which seems to be different.
After looking at the link you gave: Homebrew CMI 8738 drivers - Hydrogenaudio Forums
I read something about a dogbert driver for these CMI 8738 ICs.
I tried to install it but it seems that these drivers don't work with the CM108 which makes me think that the 14 bits test only referred to the other driver for the older C-media IC...
I use i2s output from the Teralink, do you think this is affected as well as the SPDIF? the C-media driver i use 188.8.131.523 allows me to turn off the SPDIF, I find that this gives better sound quality when using the i2s.
Funny thing is that i have heard a 14 bit NOS dac and it did sound dynamically limited and like the sound was changed, but my 16 bit dac does not sound like this is happening when i use the teralink. But i have noted your meaurements about the SN ratio of the CM108 driver. Perplexing....
The Cambridge Dacmagic also uses the cm-108 driver, and i have used the windows 7 default driver for a while and it has worked great. I briefly tried the driver which CA recommends and i think it sounded very muddy for some reason in comparison to the default windows 7 driver. It also installs alot of software which I don't need + enables volume control in windows if i remember correctly.
The CA cm-108 recommended driver is here: Customer Care System (which I don't recommend on win7)
The windows 7 default driver version is much newer from July this year and is driver version 6.1.7600.16385.
So we have observed the similar things in sound signature differences I believe.
I have a Musiland 01 USD coming soon so I will compare with that too
What I am after is a RJ45 to RJ45 I2S cable 20cm would be fine but of excellent quality.
I have been looking all over for suppliers but have not been able to locate one.
Do you know if DAC makers adhere to the same standard?
I mean do they all use the same Pin layout?
no one knows, no one test, we all just assume these usb devices are superior. seems to be the flow lately.