ZMF Atrium - new open-back co-flagship

Oct 12, 2022 at 1:57 PM Post #3,391 of 7,712
Count me in! Is there any kind of mailing list/newsletter I need to sign up for to get updates, or is there a separate thread for it started I can watch?

There is a link to my DIY thread in my signature where I update on progress. Ultimately the project will likely be hosted on diyAudio.com, which I will link to when the project is posted. That is a better place to host it for its longevity as there are many experience tube DIYers there that might assist aspiring builders in the future.
 
Oct 12, 2022 at 2:14 PM Post #3,392 of 7,712
I can build this amplifier from scratch in 6 hours, faster than any other amplifier I've designed.

Seems to me you could have built 20-30 in a single week.. just saying.... cough cough :ksc75smile:
 
Oct 12, 2022 at 2:15 PM Post #3,393 of 7,712
@Somatic I never listened to this song before (Cry Me a River - Julie London), so not familiar with it - but will use it as an example for the A/B testing.

On the Verite BE2 suede pads, sub and mid bass definitely come thru quite a bit less, and yes, the lower mids do come out a bit more - definitely a more "balanced" sound signature - with this song specifically, I would also enjoy the BE2 more. Even throwing the modest EQ adjustments on with this song, I would still rather use BE2 for this song (and possibly this genre - I don't really listen to this genre at all).

Next song
Aljamiado - Renaud Garcia-Fons

BE2 suede pads have about the same effect as above, however, I find the Brainwavz for this song just expand the body/fullness of this piece to something that is beyond enjoyable for me - not that the BE2 pads make it sound "thin", but I am just losing something with them here. If one is looking for more exactness to detail and balanced signature, than they'd want the BE2, but for me personally, Brainwavz on this song almost intoxicate me, lol.. I could get stuck in a trance with this song on repeat with them - now, I know some don't use or like to use EQ, but throwing my modest EQ adjustments on it, takes it to that perfect place.


Next song
They Don't Care About Us - 2Cellos

About the same opinions I have in regards when listening to Aljamiado - Renaud Garcia-Fons... the fullness/body injected into this song, makes it sound super powerful to me on the Brainwavz, and those cellos.. so good!
The BE2 perf suedes here definitely trump the Brainwavz here in the details extracted, but imo, at the loss of what I personally consider that "fun" SQ experience - so, again, if you are looking more of a detailed and balanced reproduction, along with increasing the sub and mid bass a bit compared to the stock perforated leather pads, then go with the BE2.


Last song
Pompeii - Take/Five

BE2 with more detail in the mids + highs here, but lose the magic that this song (and many like in its genre will arguable live off of) lives off of, the mid and sub bass - The Brainwavz extract that magic beautifully, while rattling your inner soul, with a bit of that same sacrifice to details in the mids and highs. The sub and mid bass still come out more on the Verite BE2 suede perfs a lot more than the stock leather pads though, and if you are looking for those slightly elevated levels of mid and sub bass, with more balance and exactness, you'd likely prefer them here - but if you're looking for that pure fun, oh my god my brain is vibrating while still retaining enough of those mids ands highs as well, then Brainwavz.


After A/B testing them in this fashion, there are a couple very obvious things.

1. The SQ/Experience you get from each of these will definitely be genre dependent!

2. In all cases, Verite BE2 suede perforated were more balanced with a more exactness to details in the highs most notably, while adding more of a subtle (compared to BW) elevation in the mid and sub bass compared to the stock leather perf pads - the change in mid/sub bass to the stock leather pads tho, is quite noticeable if you were only A/Bing those two

3. In all cases, Brainwavz micro suede extracted out significantly more sub and mid bass, at the sacrifice of the exactness to details - however, they also reproduced the "fun" sound signature I have always loved - obviously, the word "fun" here is extremely subjective, and what I consider that "fun" SQ, may be very different than what the next person does

Oh, and for anyone curious - Source = Geshelli J2 DAC -> DV with RCA 6AS7G (ST Glass) as output, with Philips E80CC input

Hope that helps!
 
Oct 12, 2022 at 2:28 PM Post #3,394 of 7,712
Seems to me you could have built 20-30 in a single week.. just saying.... cough cough :ksc75smile:

That sounds awful lol I already have one intense job, working two ain't happening. Not to mention if I sold this amp myself, given the cost of parts, it would be very expensive. Making it a DIY project is more fun. I have put a lot of time and money into this, hopefully that comes across in the end result.
 
Oct 12, 2022 at 2:35 PM Post #3,395 of 7,712
That sounds awful lol I already have one intense job, working two ain't happening. Not to mention if I sold this amp myself, given the cost of parts, it would be very expensive. Making it a DIY project is more fun. I have put a lot of time and money into this, hopefully that comes across in the end result.

I'm sure it will!

hopefully someone else will be motivated enough to perhaps build these to sell. I'm just a DDIY kind of guy ("don't do it yourself":ksc75smile::ksc75smile::ksc75smile:)
 
Oct 12, 2022 at 2:44 PM Post #3,396 of 7,712
I'm sure it will!

hopefully someone else will be motivated enough to perhaps build these to sell. I'm just a DDIY kind of guy ("don't do it yourself":ksc75smile::ksc75smile::ksc75smile:)

We will see! I understand it isn't for everyone, but I've tried to maximum the ratio of performance to complexity with this design. I would consider this an entry level project to terms of ease of building, and out of it you get TOTL quality sound (in my opinion, we'll see what @Monsterzero and others have to say).
 
Oct 12, 2022 at 3:24 PM Post #3,397 of 7,712
I'm very surprised but Electronic based music sounds excellent on the Atriums as well. Man this timbre is off the charts. Something about this bio cellulose driver makes things sound so real. :)
After having listened to all musical genres I even came to the conclusion that it is on electronic music that these headphones are the best. Undoubtedly linked to the enhancement of midrange, bass and more numerous acoustic effects that the atrium manages to perfection.
 
Oct 12, 2022 at 3:44 PM Post #3,398 of 7,712
After listening to the Atriums with the Universe leather pads, I switched to the Be2 Suede and I'm loving this sound. That little bit of treble clarity did wonders for what I like to hear, and it still keeps that "off the charts timbre" as @Somatic says. I'm feeling like most of the rest of you - it's so enjoyable that I don't want to switch to another headphone!
I tried the Be2 this weekend. Indeed, the dark side of the Atrium fades, the highs are more highlighted. It's very lively (almost approaching the liveliness of the Grado). I feel less depth and the holographic side, which I like so much with leather pads, is attenuated. But I would do other tests even if the change of pads is not my cup of tea :smirk:
 
Oct 12, 2022 at 4:07 PM Post #3,400 of 7,712
Oct 12, 2022 at 9:12 PM Post #3,401 of 7,712
I'm an Auteur pad (and staging) junkie apparently as those are my fav pads on the VC, Atrium and both Auteurs.
Whichever pad that gives the largest and deepest stage, it's going to be my fav pad.
Have you compared the Lambskin and Hybrid versions?
 
Oct 12, 2022 at 9:15 PM Post #3,402 of 7,712
I prefer suede pads on my vc, the universe suede to be exact. But i do agree, I typically use all lambskin pads on my zmfs. I do occasionally use universe hybrid pads on my VO when using my MJ2. With the Atriums, I enjoy Universe lamb and followed closely by Auteur lambskin/hybrid pads depending on amp.
What is the sound difference of the Auteur Lambskin vs Hybrid Pref? Thanks.
 
Oct 12, 2022 at 9:16 PM Post #3,403 of 7,712
Have you compared the Lambskin and Hybrid versions?
I have not. To be honest I'm not much of a pad roller, in fact the Atrium is the first ZMF where I did not prefer the stock pads. I find the pair I prefer and forget about it.
Ask @heliosphann . He's the resident pad expert.
 
Oct 12, 2022 at 9:32 PM Post #3,404 of 7,712
I have not. To be honest I'm not much of a pad roller, in fact the Atrium is the first ZMF where I did not prefer the stock pads. I find the pair I prefer and forget about it.
Ask @heliosphann . He's the resident pad expert.
@heliosphann

I read your Pad review several times. I am currently maining the Auteur Hybrid. I switched back to the Universe Lamb today and noticed some big differences.

Universe Lamb did indeed have a faster transient response as you mentioned. It had more sub bass amount and tighter mid bass. Bass sounded had a snappier slam/punch compared to Auteur Hybrid.

What I like from the Auteur Hybrid is the vocals are more pronounced. The magic in the vocals are accentuated. Also soundstage and 3d immersion was better with Auteur to my ears.

Guess I am wondering, what can I gain or lose with going with Auteur Lamb? You mentioned the Hybrid version has added clarity, sense of air, mids are pushed slightly forward and vocals are a bit sweeter. These all sound amazing to me. Just wondering if I go Lambskin, will I get tight bass and added slam/punch similar to Universe Lamb? Thanks.
 
Oct 12, 2022 at 10:04 PM Post #3,405 of 7,712
@heliosphann

I read your Pad review several times. I am currently maining the Auteur Hybrid. I switched back to the Universe Lamb today and noticed some big differences.

Universe Lamb did indeed have a faster transient response as you mentioned. It had more sub bass amount and tighter mid bass. Bass sounded had a snappier slam/punch compared to Auteur Hybrid.

What I like from the Auteur Hybrid is the vocals are more pronounced. The magic in the vocals are accentuated. Also soundstage and 3d immersion was better with Auteur to my ears.

Guess I am wondering, what can I gain or lose with going with Auteur Lamb? You mentioned the Hybrid version has added clarity, sense of air, mids are pushed slightly forward and vocals are a bit sweeter. These all sound amazing to me. Just wondering if I go Lambskin, will I get tight bass and added slam/punch similar to Universe Lamb? Thanks.
For me the Auteur Lamb pads had very similar technical characteristics to the Universe pads, but with more 3D staging vs the wider more traditional staging of the Universe pads. I'd give them a shot if you can.
 

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