To add more to this 007 (whatever version...) saga, in a way all this actually helped me.
Preface: we, as - preferably nice, humble - humans, should join forces and try and learn from each other.
Even just regarding audio we experience and know things that others do not.
And the frustrating thing is there is very information in one place and it might not be as valuable as experience, if you are lucky you find someone with close experience.
A chain is not "ready-made".
It is something that you figure out eventually, after finding out what sounds good and what not. And this even starts with the recording you play that someone else made and the software you use.
All these tiny differences might add up to what you are hearing.
If you don't start comparing getting a lot of placebo effects in the meantime (and just not enjoying not listening to music) you have very little idea about where you're actually at - in some ways fooling ourselves can be less distracting and more enjoyable...
I'm guess being a musician or an audio engineer might help, they might have a better idea of how things should actually sound, that helped me a lot 10 years ago. Although I would add, that in the grand scheme of things, that is also just an another viewpoint that I should be taken into account as I said, people make recordings is various ways.
I started 14 years ago, being completely clueless but at least I observed how people behave which steered me towards Stax and also this forum.
Anyway, who cares about audio lesson cliches...
I am on the modified 727 after some weeks with the Carbon. It's anything but a representation of a very accurate sound.
I prefer this one. I listen to music. (while I observe a lot of things, this has become my main perspective)
Why? The 007 is a power hog, how is this possible...?
The Carbon is more neutral, has tons more power with better extension up and bottom, bigger stage, better dynamics, definition and all that jazz.
So, with the 727 I am listening to a more compressed, I would say softer, brighter sound (but with warmth in the mids) with a smaller stage and some roll-off. (I feel that almost any Stax becomes too bright on this 727, basically nothing really works as well as this 007 Mk1.)
However, the sound is 'simpler', more 'wholesome'. More cohesive, intimate and inviting and there is more focus and "beautifying" on the midrange which is a special 007 characteristic.
Less can be more, which is why the NB Lambda is still a firm favourite of mine.
Maybe it is just my brain getting bored by a certain sound and more interested in a different sound, but I don't think so.
I had the 727, but for quite a while I didn't have a 007.
(So basically, this lengthy post is only written, because I randomly have all this gear...)
The Carbon does not "do much".
It's a great amplifier.
Works great with Lambdas (older ones), works great with the Omega and I might find more interesting matches.
However, the characteristics it is giving to the 007 is making it more V-shaped and analytical.
The stage becomes too big, there no coloration to fill in that upper midrange mid and upper treble emphasis and the flabby bass problem is actually more emphasized on the Carbon. (I was thinking of maybe trying different earpads, they definitely do their own contribution...) There is deep bass, but I think a bit too much and treble is the same.
More does not equal better.
So do I want throw (yet) more money at this to dial it more?
Or rather: is this something that I myself created that wasn't there in the first place?
A few notes about the Lavry DA11, which I still have many years on, partly because of being a cheapskate and partly because I am not the biggest fan of buying things blindly and I haven't found anything that I borrowed and think I must have this (Slightly missing the Parasound DAC1600HD, should have had that modified). In today's world, it is now a "semi-vintage" studio DAC. Does not add anything "magical" to the sound, that could be needed with a Carbon with certain headphones.
However it does add a bit of fullness to the bass and "looseness" to the sound that I found more preferable with Stax headphones that can become "too clean", and there is nothing offensive in its presentation. Sort of a similar difference that you get regarding 727 vs Carbon.
Unlike with headphones and amps I have very little clue about sources, and I don't want to screw up the synergy I achieved with the SR-Omega + Carbon either. I would like more richness in the mids and I can detect a slight bite in the treble but it is good enough for me. (Although I wonder how I will feel once I get the Carbon back from the normal bias modification and I switch back to this pairing...) I know Lavry makes the Quintessence, but it is super expensive and does not even have a USB input.
Just to give you an example about synergy: with the SR-Omega + Carbon, stage is also overdone, but the headphones want to do it anyway, the Carbon just lets it do that, so it is not distracting, the bass is naturally very strong without cutting into anything else like on the SR-007, etc. etc.
As much as I understand about why the amps are designed are how designed, some headphones just need more coloration to reel them back to "accuracy." (a quote I stole from a meet impressions, and it's very true)
So in the future I hope to see some variations that are at the Carbon's power level but deliberately more tuned like the Stax amps.
The X9000 needs plenty of tuning if you ask me... But it's also telling that people with T2s tend to like it more. So maybe it is not completely lost cause for me in the future when it gets cheaper on the market.
But as Bob Katz said about the 009 "Why would you want to have a more expensive headphone that you might need tons of EQ to correct?"
Well, to balance things out, I can answer that, because each headphone has particular characteristics that a chain will not change that much.
That is exactly my personal worry about the X9000. The reason I am annoyed by it is just having a lot of generated hype by comparing it against other products that I personally don't like much either.
If there was a balanced take on things, I would have no reason to be frustrated.
The 007 Mk1 has simply matured enough that you can find all the good and bad about it.
I hope to hear it in a maximised setting a BHSE is something that a lot of people rate (maybe against a maximised Omega, which might rather prefer what the Carbon provides)
It can be a great everyday headphone. It has great natural ability, a few definitely just manage to edge out the SR-Omega without being silly expensive, threatened by reliability problems, etc...
I just don't know how much money and tinkering etc. is needed to be thrown at it to keep the synergy and technicalities perfectly balanced - as all things should be.
For about 3000$ all-in, this chain is not too bad (I would add my NB Lambda to have more brightness, but more firmness accuracy.)
But maybe there is more to be extracted from this budget, that's where the knowledge comes into play (with personal preference).
Probably not how it's supposed to sound on the 007 Mk1, too soft.
But it captures the essence of the musical message, there is no distraction going on, it takes me back to a different time - so I like it.