Tubes for ARC PH3SE

ARC tubes reflect that their units are 'cookers' and their tubes tend to last at least 50% longer. then other brands. So, if you do change tubes, they may have a much shorter life. Whether that is okay with you will depend on the improvement in sound, and your budget. I have a 3SE and have rolled the tubes to no real significant change. But, depending on what else is in your chain, you make hear differences, some good, some bad. Enjoy.

I had a ph5 which I tubed rolled different NOS 6922 in. there was quite a difference in all aspects of presatation, the soundstage improved.... top to bottom expanded.. I would expect much of the same with yours
Dennis

I really like Siemens e88cc in mine.

Everyone's opinion is going to be different, because everyone's system is different and the sound everyone's chasing after is different.

I personally prefer Amperex tubes over Siemens in most cases. I have over 600 of various 6DJ8/6922/7308 tubes. You name it, I probably have at least a pair or two in there. I've tried different brands, but always come back to Amperex.

I had purchased my ARC LS-25 Mk I with GNSC Reference mod (used) a few years back from a dealer. When I contacted GNSC, they told me the mod was done less than a year before. With the mod, the previous owner had purcahsed a quad of 1960s Siemens E88CC. They sounded nice, but seem to highlight the midrange more and not as extended at top and bottom. I ended up with a quad of Amperex 7308s, then a combo of Amperex ECC88/Telefunken ECC88.

In my PH3SE, I had been using Amperex 7308 USN white label for a long time, recently just switched over to some Amperex white label E88CCs.

I would suggest you try both the Amperex Bugle Boys and the Mullards and see what you like and not like with each. Then go from there.

By the way, I had spoke to ARC regarding tubes for the PH3SE. You don't need matched pair tubes. There are two sections within each tube. Each channel is using one section of each tube. So it is more important that each tube has matched sections. You could actually use three different brands to further "tune" the sound if you want.

FrankC

I also have the PH3SE. In my opinion the bugle boys will sound much better than the stock ARC tubes and to my ears they will also sound better than the mullards overall.(mullards will have a little more bass)
I'm currently using 6h23 russian tubes which are very good before that I used amperex 7308's which were also very good but I liked the 6h23's more.