I don’t have any tube suggestions, but if it was me I’d try another set of tubes before making a final decision. Maybe try calling ARC and see what they recommend given what you’re looking for, but you’ll probably get some good recommendations here. If not, you should start a new thread and I’m sure you’ll get a multitude of recommendations. Just make sure you include how much you’re willing to spend. There are also some dealers that are reputed to have good knowledge (Kevin Deal at Upscale Audio maybe?). Anyway, best of luck.
Preamp comparison - Rogue Perseus and ARC LS25 MKII
I was fortunate to pick up a LS25 a couple of weeks ago and have been giving it a thorough listen. Really nice preamp, my first ARC piece of gear. It's been fun switching between it and my trusty Rogue Perseus. Probably not a fair comparison with the LS25 over 3k more when new. But it is what it is. Using my Rogue Atlas Magnum tube amp and Snell type D speakers.
Right out of the box I could tell the difference. The LS25 is just a little more refined, the word polite coming to mind. The Perseus gives music a bit of bite and texture, an added fullness and bass presence also. The soundstage is just a touch more open as well. The LS25 has a slight edge in clarity, with more attack.
I've always read that ARC tube gear is considered to be not quite as 'tubey' as most. I think I now know what that means.
Now trying to decide which to keep. I will do more listening to be sure but I am leaning towards sticking with the Rogue and passing along the LS25. You all might think I am nuts (most likely I am) but I do enjoy the richer and fuller presentation of the Perseus.
A question for those with ARC experience: might tube rolling in the LS25 add a bit more of what I am looking for?
Ideally, I would like to find a tube pre that combines the attributes of both - clarity with great texture and fullness and an open soundstage. Any suggestions for tube pres that might fit this description are welcomed.
Thanks!