AMR 77.1 Tubes


Hi All,
I am looking for recommendations on tubes for my player. I have Bendix's 6900's in the back end. I just purchased Mullard 12 AT7 tubes through Upscale Audio that are British Air Force NOS.
I believe the EZ-80 tubes in the player are Tungstram. 
I have a NOS pair of EZ-80 Valvos as well as Telefunkin I could try but this player is a pain to change tubes in.

I have had this player for a long time bought on A-Gon years ago and assume these tubes are getting a bit long in the tooth other than the 6900's.

Suggestions will be greatly appreciated.

Many thanks,
Bob.


fratbob