PrimaLuna Prologue 8 -Tube Rolling Recommendations

Drdennis,

Thanks for your feedback. I was also considering the tubes suggested (NOS Mullard CV 4003/12AU7 & Sylvania gold pin 5751) in The Absolute Sound review, but the tube distributors that I have contacted stated that these tubes are hard to find and extremely expensive. Do you know where I might be able to find someone who has these particular tubes?

Also, What is the 2nd IC upgrade you are referring to and where did you purchase the HiFi tuning fuse?

The review describes the two IC upgrades. My unit came with the IC installed. You might find the tubes on Audiogon. You may have to wait a while, but eventually most everything shows up on Audiogon! You could try posting in the Wanted section. HiFi tuning fuses are available at Music Direct. Ask for Mark. He's very helpful. They also sell some tubes.

DG

Apart from Preamp (CAT SL1) I am using the CD palyer with 2 clocks and two Premium Prolgoue Power amps in modo mode. Apologies if I get the names mixed up. The CD gives stunning results with 2 metal based Philips Recitifiers from 1958 and presently 4 new, not NOSm Siemens 5814A tubes. The power amps and preamp are all fitted out with Valvo Hamburg tubes, where critical with D getters and 17 mm plates. I play entirely classical music and a German lady in the tube and electronics market put me onto the Hamburg Valvos. They may be badged Amperex etc but the key to identifying them is the acid code on the glass and sometimes painted on underneath, There is always a D for Germany whereas Heerlen using a Greek delta symbol. The difference between D getters and Halo 45 degree getters is in the higher end especially with piano works. Because the sound is so clean and detailed it is tempting to play everything too loud. I even found some Mullard tubes made in Germany. At the end of the day it is what you like that appeals. 

@houstonjazzfan 
Upscale Audio has any tubes you need for the PL. 
Kevin owns Upscale, and he is part owner of PL.
Go to the website and read up on the tubes. 
Kevin also makes videos explaining the sonic attributes of his tubes. And videos on the PL products in conjunction with the tubes hr sells. 
And Upscale will be happy to help you on the phone.