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


Hi,
Over the next few weeks I am organizing in-home demo of  three pre/power amps for my B&W 803D2's, and will purchase whichever sounds best.  I will be testing the following gear, which is based on what's available where live:
-Bryston B173 / 4B3-McIntosh C47 / MC462
-Pass Labs X250.8, if I can get my hands on one (will probably use the C47 pre-amp to test with this)
The Gryphon Diablo 300 is also a candidate.  I've seen some strong comments from others that Gryphon is in another league compared to the others.
My question is, barring what sounds best to me during my auditioning, in general to most people would the Diablo 300 really beat the others in my list?  And, are there any material disadvantages to sound quality considering the Diablo is an integrated vs the other choices?  I don't really care about having separates, but sound is obviously important.
Secondly related to the Gryphon, there is only one Gryphon dealer that is even remotely close to me.  Should that dealer cut ties down the road, or go out of business, does anyone know how I might go about getting service for the Diablo should I require it at some point?  Is that a valid concern?  There are multiple Mac dealers near me so that would not be so much of a concern.

Thanks in advance for any feedback....


nyev
I agee Inna, that’s why I say it’s something that is a consideration but not something that will stop my from purchasing.  Shipping to Denmark is expensive but doable, especially with Gryphon’s wooden crate for the unit.  I think this is just part of what you get when you leave the more “mainstream” companies like McIntosh and Bryston and move up a level to a bespoke company like Gryphon.  I don’t think their refusal to deal with customer directly is arrogance, rather I think it is likely necessity due to their size.  Just like their tentative re-entry into N.A. distribution - it’s likely they are not set up to scale for larger volume sales and subsequent support.  Gryphon have never appeared to be interested in really pushing geographic expansion or targeting wider market segments, but again this may be simply because they never focused on positioning company to scale while still maintaining their no-compromise approach to design and (sub-contract) manufacturing.  I think if the N.A. distribution were to stop they would very likely provide direct service.  To me the biggest concern is what their future will be like without Flemming, this is what is different about Gryphon vs most other bespoke companies.  I saw an interview with their current CEO and it didn’t exactly inspire conference, especially what he said about some of the reasons that influenced Fleming’s retirement.   Regardless, I am now fairly confident that to beat the Gryphon Diablo’s sound quality I’d need to spend double the cash (for say a D’Agostino or Luxman system).  And since I’m not prepared to spend that much, the Diablo just makes sense, and it’s a great value.  I don’t know too much about D’Agostino or Luxman but similar concerns could exist with them.

My dad still has an Accuphase pre-amp/amp and a Nakamici tape deck that he bought in the seventies.  The first brand is still around in its mostly original incarnation, but not the second.  When I was a kid there were multiple local shops that provided repair services, which I recall my dad relying on from time to time.  These shops were authorized by the brands to provide service and surely had training.  All of these service options no longer exist.  Changing times.
Yes, changing times, but I too use my Nakamichi 682ZX cassette deck almost daily and have it aligned and tuned every three-four years,
I once read here on Audiogon, a long time ago, a man was asking about the best way to ship big Gryphon stereo amp to Denmark. That was the time when Gryphon was not present in North America but they agreed to service the unit. I am not sure if he was the original owner or not, but you will be.
nyev, where did you see that interview with the current Gryphon CEO ? I would like to take a look too.
By the way, I don't know about D'Agostino but Luxman would sound very different from Gryphon, Accuphase too.
Inna, I’ll try to find the interview, it was just on YouTube.  It was nothing really negative, just said that they weren’t planning to do things differently, that it was an honour, and then something I thought was just a bit odd that he bothered to mention about Flemming.  I’ll see if I can find it again.
Inna, here is the video I was referring to:

https://m.youtube.com/watch?v=OXFXvA4c4Fk

After researching, I also saw that Gryphon’s new CEO came from B&O (he worked there as of 2010).  They make some neat stuff but I don’t think their main focus is on sound.  In the video above they say that Gryphon’s approach is to allow their engineers to work with any budget necessary to achieve the highest quality sound, and that they plan on continuing with this high-end market focus.  I’d be curious as to how they plan to grow within this market, or even if corporate growth is a goal for Gryphon.  Some companies simply don’t care about that.