Hi,

I recently picked up an old Musical Fidelity X-DAC at an audio sale.
It seems to be a slight improvement on my Quad CD66, little wider
sound stage, fractionally more precise instrument positioning.

However, what did surprise me was that some mono recordings seem to
have this 'widened sound stage'. Is this possible? Can a DAC do this
or is there some DSP or analogue tweak being used to artificially
'improve' the apparent sound stage?

BTW - Can someone point me to a not too technical article(s) on how
DACs work and why it is that one DAC can sound 'better' than another?

BTW2 - What DAC (chip set?) is used in the Quad CD66?

Regards,

John.