Modwright Oppo 105 - Upgrade Power Supply Tubes?

Thanks to the forum & a post by Mrtennis I upgraded the 6sn7 tubes to 1950's RCAs and am most pleased with the change in sound. In my 2 systems with my 2 ears the player went from digital sterile to nice and musical. I am not a fan of the supplied electro-harmonix 6SN7 that is supplied. Thanks again Mrtennis. And here is my question, has anyone found it beneficial to upgrade any of the tubes in the power supply?

Many thanks.
Bluewolf, you might want to try the new production Gold Lion 5AR4. You can pick one up for about $35-$40, and in my experience, it is better than the old production Blackburn Mullards from the 50-60's that are becoming very rare and expensive.

The new production Sophia 6SN7 is also a very nice tube if you want an alternative to your RCAs at some point
Yes, I use a MODWRIGHT 9.0SE Linestage. The biggest improvement to the Rectifier is a Mullard 5AR4 old stock or NOS.I bought mine from ANDY for around $100.00. Awesome tube :-)
I also run the RCA grey glass vt-231/6sn7GTs on my Modwright Oppo-95. They do not sound good with a Mullard 5AR4 (I have a date code F31 Mullard).... IMO, way too much of a good thing, to a point where it sounds dull and slow.

The Genalex Gold Lion GZ34/5AR4 is a decent rectifier with the RCAs. A rectifier that I personally like better with the RCAs is the Philips 5R4GYS that Upscale sells. I think its around $50. Definitely worth trying.