Pulled the trigger on a Moon 861! Hope it pairs well on my Focals

My speaker is like a Beryllium based speaker, the Yamaha NS5000 (the child of the Be Original Gangster, so to speak). It uses Zylon for the drivers, and it is as detailed as Be.

After hearing the 761 I wanted to get it to pair it with the NS5000, because that would be something special. Great detail but no harshness and also lots of power. I would have rotated the CODA #16 amp and the 761/861 between my 2 system. Luckily, I am tapped out $$ wise and went with a cheaper amp (good enough for now).

Simaudio Moon electronics are clear and transparent. Pair them with very revealing speakers and a front end that’s not on the same level and you’re in a world of trouble. 
I would say this is one of the cases when you can build your system around the amplifier. I wouldn’t be surprised if this purchase has a domino effect. We’ll be hearing more from the OP on this. Lol

Mac does have a mellow sound, but there’s only so much they can overcome. A few years back, I listened to a lovely system that was all new Macintosh equipment and the newest B&W 80? Speakers. No matter where I sat, no matter how I readjusted the speakers, they hurt my ears at levels in the 75-80 db range.  
Everyone’s hearing is different, but for me, I can’t listen to any metal tweets. That’s why I got rid of my KEF Reference 5’s.  They had aluminum tweeters and midrange drivers.

Moon products are great and neutral with no coloration. Like others have mentioned, your preamp will soften the sound. Also, moon and dynaudio pair great together. 

I've had the Moon North on Focal beryllium (Kanta, Sopra, and Utopia) and it's a great match. The Moon is never harsh and everything is controlled well. Warmer than I expected. I have not tried your pre. I've only run with Moon North 891.

My friends that don't like Focal beryllium were not run out of the room with only two setups: the Moon North, and Classe Delta power/pre. Everything is smooth and well balanced and never offensive.

@dman777 it sounded bright because your speakers have a more present presentation to their mid treble and upper treble. So combine that with records that may be mixed and mastered bright and yes some stuff will sound bright

it is not an annoying brightness as it isn't peaky but a gradual uplift in their balance beyond lower treble.

@fastfreight yeah, you’re right. I’ve heard Focal on Macintosh which is supposed to be warm and even on that some recordings sounded bright. It really depends on the recording in my opinion. I find that with my Luxman 595, guitar music will sound a bit hard to listen to after a while because it’s recorded with a lot of treble in my opinion. But other music like classical, jazz, and reggae, the brightness of the focals turn to pure magic 

Just to note I haven’t got my new amp yet talking about the Luxman that I currently use which is a great amp to. I’ll be keeping it as a extra

I hope your purchase meets your expectations and you are pleased with the pairing.  I'm interested in your thoughts after the amp is run in.  Good luck and cheers!

I think the Persona with Beryllium tweeters are bright in general.  I think the Moon high end amps are awesome.  

The MacIntosh preamp may have the balancing effect you are hoping for. Tell us what happens.

Don't forget that a new solid state amp typically starts out very trebly and then softens over the first 100 to 200 hours. 

I know this, but I just can't help but draw conclusions when I put a new amp in my system, even after knowing this for decades. I get all upset... then it settles down. This happened to me recently... and it settled down so much, it was as if it was a completely different amp.  

I think you bought a great amplifier. I’ve had a chance to hear the 761 and 861 and owned sim  products in the past. I suspect you will find you will have enough power for any speakers, and that the sim audio will not color the music in any way, instead any coloration will come from the preamp and speakers. Congratulations

Yes, they do have those tweeters. I also have the Macintosh C12000 preamp so I'm hoping it will soften the highs with its tubes 

Do the Focal's have Beryllium tweeters? I have heard the 761 with Paradigm Persona 9H (791 was preamp and DAC)..It was a bit fatiguing to me.