The best Cdp that have volume control

I've owned the Sony XA7ES, and the Wadia 830. In the system I had at the time, they were sonically equivalent. System was SFM-160 Tube amps and virgo speakers with $35 copper speaker cables. The wadia gets rave reviews but I kept the sony due to it's build quality, vastly superior ergo's, and digital output. The wadia made you put the cd on UPSIDE DOWN, and didn't have the way-precise in-track fast forward /reverse or one tough track selector. Wadia is in financial/bankrupt/being bought throes right now. Another CD player with a few rabid fans is the Resolution Audio 50/55. It heard it once, and thought it was detailed yet very natural sounding. Used prices are Sony($1100), Wadia $(2100ish), and RA ($1500ish). Using the variable outs, these CD players are all in the same general ballpark sonically. I did own a non-variable out adcom 750 for a time, and I thought it had about 80% of the sony's sound quality. Nice, but less transparent with a touch of metal. I've heard that Cal audio makes a good tube-based variable out player.

Somehow I knew this would happen.

When I originally made the determination that the sony's variable out was superior, I had a set of sonic frontiers kt99 tube amps and an adcom gfp-750 and different cables. The sony's direct out was immediatly noticable as better. This may have been because of the sfm amps softening of detail. Now that I have the Pass Labs amps and Preamp, I prefer the preamp outputs. It has the same detail, but is just a little softer and less strident. Not quite as much glare. I have a feeling it's probably a component matching thing. They are so close that I almost feel silly making the distinction.