Differences between cd transports?

@tweak1 Clearly you missed my point. Being that current (AC) constantly flows in two directions in audio, even if such a thing as directionality existed, it would make no difference. 

I'm going to start selling the latest audio tweak. You can be the first to sign up, for only $500K I'll transplant you ears of a one year old rat terrier, so you can now hear the difference between 6inch cable and a 6.5inch cable as well as too much dust having collected on your tweeter. 

In the mean time I'll enjoy my system, all connected by Canare cable, a cable used on something like 99% of studio microphones. If it's good enough to record, it's good enough to play back.

tweak1-- so you are saying that the Oppo 105 can't output SACD via coax digital?  I think that you might be right about that...

@fred60 That is correct that the Oppo can't output SACD over coax. I don't think any player can. 

I have yet to find any transport which compares to the Philips which floats on jewels, as used in the old equipment like my Rotel RDP 980.The sound is incredible.
This unit picks a disc in 1 second.The logic is a dream, a full size pcb packed with electronics, dual psu and HQ caps.It is connected to the RDD 980, another master in my opinion.This cost me a few k years ago, well worth the buy.When i procured the 2 i stripped and re soldered both units, took a day.I replaced the Bakelite tray loader gear with a plastic gear.Can one still purchase such systems in today's price point world?

The Nakamichi Dragon CD System exhibited by Mapleshade at CES many years ago had a very unique feature. After the CD was placed on the tray and the CD tray was inserted into the transport the tray was locked in place.  Then a vacuum was created, filling the entire transport compartment. In addition, at the show, the entire 3 piece Nakamichi CD system was isolated on a sub-Hertz platform.