I am not sure about this....prior to setting my DAC attentuator from "max" to "variable" I used the iTunes volume control and found it very good. I did so after reading the info in the Benchmark Media newsletter:
(http://www.benchmarkmedia.com/feedback/issues/122007.php#article2)
It says the following: "The Volume Control in iTunes v7 is very-high quality under both operating system. It is very well designed and operates at 24-bits for audio devices that support 24-bit operation. The end user should not hesitate to use the volume control in iTunes 7.x under either operating system."
Cheers,
X
(http://www.benchmarkmedia.com/feedback/issues/122007.php#article2)
It says the following: "The Volume Control in iTunes v7 is very-high quality under both operating system. It is very well designed and operates at 24-bits for audio devices that support 24-bit operation. The end user should not hesitate to use the volume control in iTunes 7.x under either operating system."
Cheers,
X