Rogue Audio Cronus 12AU7-12AX7 tubes choices

I agree with Tpreaves.....Enjoy your new Cronus "as is" before you start rolling tubes. It sounds really, really good with the stock tubes. Then, once you have the desire to try new tubes, there are a lot of ways to go.

For me, my Cronus, being fed by my Rega P3-24/Exact 2/TTPSU and Rotel RCD-1072, through my Vandersteens, sounds better after I did the following : an RCA NOS 5814 to replace the center EH 12AU7 gain stage tube, a pair of GE NOS Five Star 5751 "goldpins" to replace the Sovtek 12AX7 input tubes, and a pair of GE NOS 12AU7A's to replace the EH 12AU7 driver tubes. I then replaced the original Svetlana EL-34's with a beautiful matched quad of Genelex Gold Lion KT-77's.

All this "tube rolling" was done after some pretty nice conversations with Mark and Nick at Rogue Audio, and I'm glad I followed their advice. They are a pleasure to work with.

Good Luck, and Happy Listening !

I agree with the above comments about enjoying the amp "as is" for a while. I'm doing this since I have it and I already have many hours of intense listening on it.

At that time, I'm looking for tube suggestions from you "Goners" as I want to have an idea about where to go and look and to be ready if a deal pass by. But I'm not on a hurry.

About the center 12AU7, mine is totaly blank. I don't have any idea of what brand and year it is. Should I ask Mr. O'Brien what it is? Do you have the same kind of tube on your Cronus?

Sebastien1,

I know this is off topic, but I've seen your postings on Audiogon and HUG in relation to the Harbeth SHL5. I don't know if you are still using that speaker, but it's one I've been most interested in. Are you using the Cronus with the SHL5? I saw that you had some experience with the Luxman integrateds. I believe you had the 505u, and one of the Class A amps, and was wondering why you chose to go the Cronus route after hearing the Luxmans. I've been interested in the Cronus, and have heard the Magnum version at a local dealer , but was hoping to hear your experiences with various Luxmans and Rogues with the Harbeth. I haven't had a chance to start auditioning amps yet, but would appreciate anything you could share about your experiences. I was also wondering if you had any thoughts on the strengths of the Cronus relative to the Magnum version and Luxman integrateds. Any of your thoughts on these questions would be appreciated. I’d be willing to spend the extra money on the one of the Luxmans or the Magnum version of the Rogue if it were worthwhile, but would prefer to save the extra money for music, so it’d be great to hear someone who has heard the Rogue/Harbeth combination after having heard the other combinations. So far, I have the usual suspects of LFD and Luxman on my audition list, based on reviews and forums, but there hasn’t been much about the Cronus/Harbeth combination, aside from a brief mention in Stereophile re: Son Ideal at the Montréal show last year.

Thanks in advance for your time!

Anonymoustao,

Well, let's continue off topic because I don't have other way to communicate with you. First, I still use Harbeth SHL5 and I really appreciate them. In the last year, I had the chance to try many amplifiers with them. I had a great time with two Luxman and I like both the L-505u and L-590AII. The 505u have a dryer bass with the SHL5 but on every aspects, the L-590AII is more interesting with these speakers: voices so natural, fabulous sound of strings instruments, easy on the ear, refine, musical and organic.

The main reason I went back to a "cheaper" amplfier ($2000 vs. $9500) is that I judge that in my system and budget limitation it wasn't worth it. So, I switch back to the Rogue Audio Cronus, which we talk in this thread.

Surprisingly, with the Harbeth, the Cronus does things that even the L-590AII didn't. Good for me! The soundstage is wider and deeper and the timber of intruments are more accurate.

The influence I had to go with the Rogue is that my Harbeth dealer often demo them with Harbeth speakers and that combination plays MUSIC! So, I demo the Cronus at home and enjoy it. It was my first time with EL34 tubes amp and I like it so much. I don't have any regret about the switch I made and I've got back few thousands in my pocket.

Finally, if you'd like to have other information on this subject, we could create a new thread. I'll be happy to contribute.

Let me know.

I've tried RCA clear tops in both the pre-amp and the driver positions. I found them lacking in body/fullness in the former but, with warm pre-amp, phase splitter and power tubes, good in the driver openings. They have really nice, extended highs.