What tubes are in you Rogue RP-5?

Speak with Mark Obrien or Nick at Rogue. Describe for him what characteristics you want and he will make suggestions as to the most appropriate tubes. I did with regards to my RP-7, and he suggested I swap for Telefunkens   The sound improvement was marked and more to my taste (detail with a good soundstage and with the correct tonal/timbre for instruments). Mark and Nick provide outstanding customer support and are always helpful speaking from years of design and experience.

My friend Jim put a set of Mazda tubes in his RP-5 for a big improvement over stock tubes and also over current production tubes such as Gold Lion and Mullard (the Mullards were better than the Gold Lions in this case).

The rear pair of tubes have the bigger influence on the sound.

I am presently borrowing his previous preamp, a Rogue Perseus, while awaiting the return of my Calypso from Aesthetix. I have a pair of NOS RCA clear tops in the rear locations and a pair of the current production Mullards in the front. The Perseus is sounding very good. When I return it to Jim, he is going to try out the clear tops in the RP-5.

I put NOS Mullard , 12ax7 tubes in my RP5, purchased from Upscale.  They were matched and were Upscales “Platinum” tube.  They were cryoed as well. 

All…thanks! I do plan to give guys at Rogue Audio a call on Monday. 
@stereo5 you sure you are using 12AX7? RP-5 calls for 12AU7 and I don’t see NOS Mullard 12AU7 variant on upscale website.