The Best modifications for the Sony 5400 sacd

I have spent much time trying to get the most out of the Excellent Sony 5400 sacd player ,I have heard the Terrafirma light clock mods which was very good, the best I had heard Until while on business I Called Dan Modwright and his just completed upgrades for this player. What I heard was much more realistic and he infomed me he is using the latest from Audiocom - U.K their Superclock 4 which has a super low 2 picoseconds of jitter .Modwright uses the excellent 6sn7 vaccum tubes for the analog input stage and the 5ar4 vacuum tube for the substantial seperate power supply .Dan said to have the lowest noise and best regulation the power supply had to be seperate and Vacuum tube ,also for the masterclock Dan completly built his own analog section
and supply capacitors, including his excellent Nichicon Gold , and Panasonic audio caps for the clock to guarantee no noise degrades the very sensitive digital section. I can tell you first hand it makes a good cd player a Great one .
I recommend asking for 2 Bybee purifiers for the incoming
at the IEC which this unit had ,and Hifi tuning Fuses .This unit lacks Nothing.
Now looking back at the terra firma mod it is way overpriced for the little you do get, for just over $2k you now have a player that is up there with the best !
I left my deposit and my unit goes in week 2 of June .
I will update the forum on breakin when my unit returns which will be 3 weeks after received.