Has anyone replaced tubes in Aesthetix Rhea ?

Foo:
Its been awhile, but to the best of my recollection I replaced V1,2,3,4 with Telefunkens (12ax7) & V5,6 with Siemens (6922). Noise floor dropped considerably and sound was much warmer and more natural. A worthwhile upgrade in my opinion.

Stew
Thanks for the information. I appreciate it.

Just wanted to share the tube compliment I came up with. DEAD quiet, nice sparkle on the top, holographic soundstage and very nice air around the instruments.

V1,V2 & V3 - Sylvania 12AX7
V4 - Brimar 12AX7
V5 - Amperex 6922/6DJ8 (1961)

All NOS, matched pairs. Took a few months but worth the challenge.

After several testing sessions I would also like to share a solution I am very happy with. Minimum noise, excellent transparency while keeping a full bodied sound with huge soundstage:
Single Ended stages (2): Telefunken ECC83 smooth plate
Phase converter stage and amp stage before 6922 (2): Telefunken ECC 83 ribbed plate
Buffer: Siemens ECC88 gold pin.

When I first started to play around with the Rhea, I liked the all Telefunken route. It was good enough to convince me that I needed an IO which I did purchase.

I did find another tube set I like better and it's cheaper to boot. In the first gain stage (v1 & v2), NOS EI's from vintage tube service. In the second gain stage, GE black plate 5751's and for V5, a Telefunken 6DJ8.