Luxman m900u monos vs m10u

When you bridge an amp you increase the minimum speaker impedance compared to the stereo configuration. 

I think much here depends on your speakers, and what you want to achieve.  If you have hard to drive speakers, you want true monos or stick with the stereo configuration.

If you have nice to drive speakers (no less than 3.5 Ohms and not reactive) with great channel separation then the m900 is your answer.

My speakers are the Revel Ultima2 Studios. I believe their nominal impedance is 6 ohms. Minimum impedance is 3.7 ohms. Their sensitivity is rated at 87.7. Thanks

OK, the Salons are pretty good speakers and IMO (subjective*) both Luxmans are very good; for perceived speed and power I would favour the m10 -- but you are aware it's a behemoth?

It / both will blow your Salons to the next block; you may not need that much power, unless you listen to Mahler in high volume 😁.

In any case the m10 is worth it as an end-game choice; if not, go for something cheaper (and, arguably, less resolving and with less drive...)

*there's a stereophile review comparing the 10 to the parasound , if I remember correctly, concluding they are close. In my limited experience -- there is no comparison, the big Lux is in another league,  (however great the Para's may be!)

On YouTube, there is a channel named: Jay's Audio Lab.  He did extensive testing with the 900 series amps and the preamp; I think he also had the new 10 series in his listening room, but my memory is fuzzy on this.  Google it or go to YouTube and search his channel. He does a wonderful job getting the equipment, hooking up some of the very best cords and cables to it, and then playing them along with comparing it to other brands. 

Jay said the Luxman 10X is the best Amp under 30K. He even likes it better than the Gryphon Essence. Guess it depends on how much you "trust" his memory. He had the Luxman M900 at least 3 times in his system.

Whether this is the amp (either Luxman) for you or not depends on what you’re looking for in sound. I spent several hours with a M-10x and was completely unimpressed. It was clean and well controlled… but completely uninspiring. Same problem I have had with the Luxman 509x. Completely uninspiring. No emotional connection. Nice clean lines and great look. Lots of pretty dials. No soul… no music.

You can see my systems under my UserID. I want music, realistic rendering of treble, fully fleshed out voices, detailed and realistic bass.

I’m always amazed at the disparity of some of these discussions. Within this small thread an amplifier is described as “the best amp under 30k” and contrasted with “uninspired and emotionless”. I guess ultimately we are on our own to discover what really works best. Thanks anyway for all the feedback. 

OP,

Absolutely.

When I was new to high end audio (fifty years ago) hearing details with new equipment that I had never heard before really tickled my fancy… and with bass that slapped me in the face. Later, a broad soundstage with individually placed instruments were what blew me away. Then the microdetails on the edges of the images and a lowered sound floor… etc.

Occasionally I would hear a system that would just connect to my heart and soul. But typically it lacked the details and bass. Over time, I slowly unraveled what treble in real musical instruments actually sounds like, also, real brass, and bass in the real world. Over the last twenty years I was able to put that emotional connection, and real rendering of treble, and midrange bloom to render voices with the right weight and get all the details and bass into a system. All, these steps changed my values in sound quality.

Folks have different values and are in all different phases learning and in evolving. Like some folks I knew as a youth… they listen to the same stuff they did when they were young. My world has evolved and included most kinds of music. Different companies cater to different groups. This is why you must listen to different equipment, like Audio Research, Rowland, Boulder, Krell, Martin Logan, VTL, Cary… etc. Each has a different house sound. Find the right one for you.

One combination of components I should have been blown away with included Boulder preamp / amp, Magico speakers… don’t remember the source. But it was a system designed to scrape every last detail off the CD. My partner and I had to leave… our ears hurt… the distortion and noise from getting so much detail had destroyed the music. There were some folks lapping it up, overwhelmed with the detail they could hear and the bass punch. It is hard not to think they had hearing damage…