Tube recommendations


Hi all
The phono stage within my pre currently uses these 3 stock tubes - Sovtek ECC83, Electro Harmonix ECC81 & ECC88 (I think it's Tung Sol).
As I'm new to tubes which tubes would you recommend to be a significant  upgrade?

Thanks 
Rich

128x128infection
+1 Telefunken NOS or you could go modern Gold Lions (honestly they can be just as good). Both will fit your application (low noise & detail).
6H23 is a Russian tube type but a 6992 can be substituted. These tubes are very revealing and have an extended top-end. 
  With a phonostage it's important to get tubes that are low-noise and tested for microphonics. The 6992 is a tube that can become microphonic.

It seems as though the 
Voskhod 6H23 is a very in-demand tube. I would roll the other tubes and keep this one for now.


https://www.head-fi.org/threads/schiit-lyr-the-tube-rolling-thread.549508/page-559


@shadorne  thanks, yes I think it will be going the Telefunken route.


@lowrider57  thanks. I did notice that they are about $130 so can't be that bad...!

Infection
I believe shadorne may have the tube substitute number for the 6H23 incorrect. I believe the correct tube is 6922. Another good source is Upscale Audio.com. they also have good user reviews on tubes and good selection. 
I have never had problem with any tubes bought from them.With regards to Telefunken tubes vs Gold Lions. I have used both companies 12ax7 tubes in my phono stage. The Gold Li on tube is best value for money but they are not as good as the Telefunkens.