Bryston 4B3 vs Mac MC462 vs Pass Labs X250.8, OR... GRYPHON Diablo 300?

Yes I found the McIntosh separates really un-engaging in comparison with the Diablo.  I went into the at-home testing with quite a lot of respect and expectations of the McIntosh brand.  But after the test I can't view McIntosh in the same light.  Not really fair to McIntosh as I think my feeling is that there is nothing materially wrong with the brand, but rather the Diablo 300 is just punching way above its weight, in an integrated package which further decreases cost and increases value.  I'm sure it can't touch far more expensive Gryphon separates, but I think the Diablo strives to be comparable at that level.
Having said this I don't have experience with the McIntosh mono blocks so I can't really comment, other than you would need to factor in the cost of all the upgraded interconnects and power cables, which are an absolute must (and will cost thousands for decent cables). For all non-believers do a blind test, and then comment.  My non-audiophile wife can easily hear the differences in blind tests, even if she has a funny way of verbalizing what she hears. Also I just found the build quality of the McIntosh preamps to be a bit light and chintzy.  It is light, it doesn't feel solid, and the screws on the chassis are not even flush mounted.  Based on my experience with McIntosh brand, my totally subjective biased instinct would be to move away from McIntosh and not consider the mono's, but really that is not fair advice considering my lack of experience with the mono's.  I'm biased based on my test and also because I'm totally satisfied with the Diablo.

You'll probably hate hearing this, but just like so many have said, I suggest taking a flight to Vancouver (quickly before Coronavirus takes over the country lol) and listening. The Gryphon dealer would be happy to arrange a head-to-head test between the Diablo 300 and the McIntosh mono blocks - give them advance warning and provide a Tidal playlist ahead of time, and they'll have it set up for you when you arrive.  Fortunately I did not have to fly, but I was totally prepared to if needed (after saving additional funds).  You can't possibly make the best decision for you without going to listen, so you can't look at the travel cost, which I know are high, as wasted money.  And even then it's still not perfect as it's different speakers and different rooms, which messed with me a bit.  There was definitely a bit of a leap of faith at the end, but you want to narrow that leap as much as possible.  Don't know if you'll take me up on this, but if you do go, make sure to go multiple times on the trip with a break in between, even if on the same day.  Traveling is hectic and psychologically there is pressure on extracting everything you can from your senses in a brief listening session, and that does not provide a very good quieting / leveling of your auditory perception with all of those factors going on.  The first time I went I traveled a short distance, and arrived after meeting with family, in between events, and realized I was dehydrated.  I left with completely wrong conclusions and at first decided I wasn't going to proceed.  I went back another time, totally relaxed (and hydrated), and things came together and I had a much better assessment of what I was perceiving.  I had to trust that the slight niggles I still had with the sound were more related to the speakers at the dealer, and once I got the Diablo home I was thankful that my gut was right.  Sounded perfect to me even before burn-in.

Almost every retail item at this price point is negotiable, so yes I did negotiate.  But you should follow your own path on the price points to negotiate; wouldn't be fair of me to disclose what the dealer let it go for.  Just know that they have some margin baked into the retail cost and that is flexible to a point.  Don't get greedy and just offer a fair offer that's a bit lower than asking.  They will counter your offer of course, so expect that and it's up to you if you want to stick to your guns.
The Diablo 300 exceeds all of my expectations and I don't see how I'd possibly ever need to reevaluate.  At some point when financially viable I need to find the equivalent for speakers - but that's a ways off.  Currently my system sounds incredible, but I do recognize that performance is now limited by what my 803 d2's can do.  Great speakers for me, but they are about a third of the value of the Diablo 300 so there are some inherent constraints in the detail the Diablo can push through them, etc.  The Diablo signature sound is definitely present even when testing different speakers at the dealer - it sort of takes over, in a very good way.

Nyev,

Once more, thank you so much. Your analysis is most helpful and I truly appreciate all the guidance you have given me. Rather than fly out west, my wife and I are planning a little trip down to New York to set up an audition. It’s by appointment only, but they do have both McIntosh and Gryphon, so a head to head battle sounds like fun! By the way, the gentleman that I have been corresponding with at the dealer in Vancouver has been incredibly helpful and has been very prompt in answering all my emails. He basically said that I cannot go wrong with either the Diablo or the 611’s with my C1100 preamp. He was quite descriptive in the attributes of both. BUT...he did say to get the desired sound out of the Mac equipment, I would need to, as you have stated Nyev, is drop some serious scratch for the power cords and interconnects. He also stated, however, that once, “you’ve been hooked by the tone of the Gryphon, there’s no going back,”. He also said that I would need a stack of 5 boxes with all the power cords and interconnects to equal the performance of the Diablo. He said the Diablo, “cannot be touched for an all-in-one package”. So...looks like I’m getting closer and closer to being overtaken by the impressive Dane...

All the best Nyev,

Kevin

Great plan regarding tying in with a New York trip.  I also had almost considered visiting the New York Gryphon/McIntosh store when I was auditioning.
A lot of sales-y comments from the Vancouver shop regarding the Diablo, but that said I tend to agree with them.
From what I've seen in forums, reviews, and talking with many experienced people on this board, the Diablo's "tone" is highly regarded, but keep in mind there are a very, very small number of people who don't the Gryphon house sound.  So you do need to hear it yourself.  Still I'd be surprised if you don't love it.  I typically don't prefer warmer sounding equipment, because in my experience it's been less detailed, bloated, slow, and veiled.  The Gryphon's tone manages to be warm, yet at the same time with very responsive, rich high-resolution detail at all frequencies, including right down to the lowest bass frequencies.  This makes it very engaging yet very easy to listen to at the same time.

Please post the results of the head to head test with the 601's!  To be honest I find audio gear testing more stressful than fun - because I find I really struggle to make sense of what I am perceiving over a short amount of time.  For me at least, it takes a ton of focus and concentration to get to a point where I have some reliable conclusions on the sound I am hearing, to the extent where I am confident I won't have a different opinion after days of use.  I can get there, but it takes work.  If I take it lightly, I find my first impression is totally thrown out the window after extended use.  Thankfully that's all over and I am just listening to music when I use my system now, and not endlessly trying to pick apart what I am hearing!
Good luck!

Right on, Nyev! It’s about the music, man!!!
Thank you again for all your help...and I will definitely post how the audition goes.

Until then...happy listening, sir!
All the best,

Kevin

I had a MC452 connected to Magnepan 3.7s then 20.7s.  It had a bias issue so my dealer loaned me a pair of 601’s which I compaired to a Sanders Magtech, the Magtech totally outperformed the 452 and the 601s, much deeper and solid base, like adding a sub to a system.  A few years later I borrorwed a 4b3 and that out performed the Magtech by a larger margin than the Sanders over the 452/601s.  I wanted a little more punch than the 4b3 so thats been upgraded to a 14b3 which is a beast.  The only amps I would consider over the 14b3 would be a Burmester 911 or a D’agostino Momentum and they would have to prove themselves on my system before I would commit.  The 14b3 specs (which is not everything) are better than all the amps listed here.  Someone on this thread said Bryston is not high end, not sure where that thought came from but IMHO Bryston rocks and can handle any speaker out there.