Well I usually buy the better stuff first and skip the buyer's remorse step ha. I already made a couple dumb purchases (D1 and uDac) because I was a complete audio newb, but am developing more knowledge by the day! Ideally I would get a Conceto, followed by the Stagedac when I get the funds. I guess I'm just wondering if the Meier has 'synergy' with the 702s like the Matrix and Burson (supposedly) have? I am thinking the Concerto may be the most future-proof of these since I also have some DT990/600 and possibly adding more phones down the line. I know the Meier seems good with almost any 'phone, but comments suggest the same with the M-Stage, and not so much with the Burson. In the mean time my Asgard ships out tomorrow, and will probably ship back next Monday lol.I'm so damn anxious to get my 'dream' system but don't have the funds or knowledge to back it all up yet lol!
edit: I can get the Matrix for $250 ahipped, so about $420 less than the Meier.
Well Jan gives you a 6 month grace period to get the combo price on both the Concerto and the Stagedac... not a bad deal.
If you would rather have a future proof system, and skip buyers remorse the concerto would be an excellent choice.
Synergy is a really personal thing so its hard to use comments like that to make a judgement (especially since you have difference source, music etc). The concerto is about as neutral as things get, so it can make anything sing really.
The burson and the matrix would most likely have issues with the DT 990/600. Maybe not issues, but not ideal by any means.
Having both a very good 600 ohm headphone, and a 62 ohm, inefficient headphone, to me, logically points to the one amp that can drive both exceedingly well... the Concerto .
Anyways, before I sound like a shill, I am sure you will enjoy your music a lot with whatever headphone amp you pick. All the ones you mentioned are good in their own way, and their respective price points... Except maybe the burson... not really sure what that 699.99 is buying you...