Tube amp advice


I am thinking of trying out tube amps. My current amps are Kharmas (MP150). My speakers are Wilson Benesch and they are not an easy load (sensitivity is 86 db, impedence 6 ohms).

So, it would seem I will need a pretty perky tube amp. Some research has shown me that the EAR 890 and the Rogue M-150's are good values in my general price range, are well regarded, and are powerful enough to drive my speakers effectively.

Any thoughts on how these two amps compare? Any thoughts on other amps that might work well?

Thanks in advance.

--dan
dgaylin
"one reason older tube amps are so desirable is that the output transformers in tube amps take forever - years - to fully break in. This is one large advantage five to ten year old amps have over new ones."

It's not unusual for me to be last on the team to find out, but is this a well established fact?
01-05-11: Phaelon
"one reason older tube amps are so desirable is that the output transformers in tube amps take forever - years - to fully break in. This is one large advantage five to ten year old amps have over new ones."

It's not unusual for me to be last on the team to find out, but is this a well established fact?
Phaelon (Threads | Answers | This Thread)<<

Only if you forget to take them out of the freezer.
Deltatrippers:

I intended to make a comment in response to your post, but forgot. I ran the original Revel Salons for three years and at least with respect to the original Salon, believe that the standard advice about powering the speaker at the time, which was that it sounded best with massive amplification, was dead wrong. The first and current versions of the Salons both use high-order crossovers and proprietary drivers that can handle a lot of power - one of my dealers had a customer that ran a pair of the original Salons with 1,200 watt monoblocks and they indeed can go extremely loud, cleanly. But this misses a crucial point, which is that the Salons are also very much a finesse speaker that comes a lot closer than many state-of-the-art speakers do at accurately reproducing the sound of unamplified acoustic instruments (i.e., most of the music in the classical and jazz genres). If you put a typical high-powered amp on Salons, the global feedback used to stabilize the circuits in such amps is clearly audible. If you search the threads, you'll see a lot of complaints about the speaker sounding lifeless and two-dimensional - that's because they tend to be demo'd with high-powered solid-state amps, often Levinson 300 series amps, which all use global feedback.

In short, the original Salons actually sound best, if the realistic reproduction of musical instruments is your goal (as opposed to shaking the neighborhood with home theater content), with lower powered, 100 to 150 watt amps that feature fewer output devices (i.e., fewer output tubes or transistors) and preferably, little or no global feedback - these speakers are very revealing and transparent like few others, and you really can hear what the upstream components are doing. Perhaps because the original version of the Salons can now be found used for $4,500 used, people think that they can be used with any old equipment - they can't. 100 high-quality tube or solid-state watts really lets them play music. If you want to reproduce dinosaurs stomping, and they can certainly do that very well, too, then run them with huge solid-state monoblocks, but if you want music, put a high-quality, zero-feedback tube amp on them - they can be really good speakers. As for the Salon 2, I don't have any meaningful time with them, but would imagine that they're even more demanding of quality amplification given their beryllium tweeters.
Raquel:

Looks like there's still hope. It's worth a shot anyway. Someone else here (Ral) suggested giving the Salon 2's a listen with the Triton before going for my second speaker option. A point he brought up though is that the speakers might go to 3.7 ohms at lower frequencies despite a 6 ohm nominal rating and that this might be a problem. If this turns out to be true, what would be the result of the 'problem'?