CD player with variable output

Be careful on variable outputs. Some have many more steps than others and may even put out more/less voltage. ie Marantz has very few steps compared to sony. The sony ES is much more adjustable than marantz and will play quietly much better for that reason-I'm not saying that one is better sounding than the other.

As mentioned in the earlier post, also be careful how the volume control has been implemented in the cdp. If the attenuation is done in the digital domain like the New Tube 4000 and majority of the cdp's, then at lower vols there is loss of resolution and the preformance is greatly compromised.
If the attenuation is in the analog domain, then you are safe.
Few players like Resolution Audio, Sony's, Quad 99 cdp have it and sounds fantastic. Some have buffers after the vol control which give better drive and dynamics.

Which Sony has a variable out that works well?

The older Sony's like the XA7ES and much older versions like the 707, 777 etc all had a remote control pot. They were very well built but older technology.

Nakolawala,
Interesting input regarding digital/anaolgue domains.
Thanks!