ZMF Caldera - New Planar Magnetic from ZMF!
Dec 22, 2023 at 9:07 AM Post #6,031 of 7,196
Sorry to bring this topic back, but I didn't have the chance to speak out before given some stressed end of year for me and I felt there were some missing points in the discussion I wanted to share, ....so yes, it's about the Caldera review at ASR.

To me, there is not a perfect place to get information/feedback about the audio gears you are interested, that's why I have learned to use different sources that won some trusting on me and learnt what are the strong/weak points of each source and ASR is not the exception.

To me, ASR is a very valuable source of information, Amir's lab tests are excellent, because of their accuracy and because the type of tests, which give you an objective picture of a device. There is no other site like that. I find it very valuable for example to double check the specs published by manufactures, to spot broken designs and oil snake products and under which conditions your devices can work avoiding distortions. I think is very good for us, the costumers, that exists a place like ASR, it pushes companies to deliver better products.

But here is what I think is the problem with ASR, and not with the essence of the site, "scientific reviews", but with the rhetoric of Amir tries to impose, that his graph translate directly to what people want/like to listen, the better the graph, the better the people are going to like it, and that's a misconception. I am completely sure there are many of his tops rated devices people don't like. In my case for example I had in loan for a week his highly praised Topping A90 headphone amp and to me is one of the most boring amps I ever tried, too analytical and dry!. Also, the other way around, many highly praised product by costumers that were bad rated by ASR. So the graphs matter, nobody want distortions, but his graphs cannot interpret our human nature of diversity. Sorry @amir but it's hard to take you seriously when you say "the Caldera sounds boring without EQ....". The Caldera got the "Best Headphone – Orthodynamic" prize by Headfonics and one of the highest rated headphones EVER by Headphonia and both tested the Caldera without EQ. Underestimating the importance of the subjective listening and the taste of people is the path to the dark side of the force!!.

Also Amir graphs cannot show other very important aspects of headphones to take decisions, like soundstage, layering, decays, slam, etc. These should be IHMO included in any subjective listening, specially if you are going to draw conclusions to recommend a product using also subjective listening. While I find Amir's methodic for labs tests superb, his subjective listening leave a lot to desire. First, he should start with the subjective listening, spending some good time with the headphones (which seems he doesn't) and ONLY then going to the lab tests, otherwise your subjective listening will be completely compromised and biased (the placebo effect that Amir himself talks about). Second, for Amir all headphones should align to the Harman curve. "If that would be really the case", he should at least provide some decent settings for EQ, with the same level of accuracy as his lab tests, or simple pointing to AutoEQ project where they have accurate settings, otherwise you are not reaching the Harman target anyway.

These are Amir's EQ parameters for the Caldera: With these, to me, the Caldera sounds bloated in the bass and too shouty. To me it only destroys the nice tuning created by Zach, that we all know spend like zillions of hrs locked down in his lab so that you like it.

1703248730470.png

And these are some more accurate settings from the AutoEQ project for the Caldera with stock pads. Please notice the difference around 200 HZ and the relative gain and coverage of the 3 peaks.. This is really the Caldera tuned Harman!

1703248995477.png

With these settings I liked the Caldera, but no more that Zach's tuning. To me with Zach's tuning the Caldera sounds a bit more mid-centric (nice for acoustic genders) and also more relaxed, nothing stands out, which I find is nice for long listening sessions. With Harman EQ the Caldera becomes more forward and more dynamic. The bass get a big boost but only at the more deep bass content that is only found on some music genders that call for it, like EDM, OST, but not for the majority of other genders, so for the last the difference is only subtle. Which one you like more is I think a matter of taste or your mood.

And at last, Amir's rhetoric that that all industry should align to the Harman target because of the famous scientist study and that everything else cannot be recommended :face_palm: (sorry I could not find a better facepalm emoticon). Again, you are completely underestimating our human nature of diversity. We all have different tastes, hearing capabilities or want to try different tastes. That's why many of us own several headphones or like tube rolling's. I could ran a different statistical study on international food and probably will find that a great percentage of the people will choice Italian or Chinese food. Following Amir's logic, then all restaurants should align to that and any other restaurant like Indian or Japanese should not be recommend. Of course it's always interesting to know what human prefer most, it could be a good guideline, but let us to decide what we like/want more.

Look at the Verite Closed for example, one of my favorites ZMFs and highly appreciated by our community. It sounds amazing with vocals and acoustic genders, specially for its unique cup reverberation when notes fade away slowly, is to die for, and guess what, it's far away from Harman tuning. In fact trying to EQ the VC like Harman will make it sound completely odd. So @amir, how would you explain that?

no_harman.PNGalien_tech.PNG


Jokes apart. I think Amir, you should stick on your labs graph and objective results (where the Caldera shinned), that's where you are probably the best at, very appreciated work! but stay away from subjective territory, where others do a better job and where I think is driving you to wrong conclusions, take in mind many people is listening to you!
For the AutoEQ, can you screenshot the band settings, I’d like to give this a try. Yes, Amir settings are too boosted and sound off. I haven’t tried the above suggestion of no bass shelf at all but I know I also had a problem the mids, so don’t think I’d like that. I’m perfectly happy with the stock and suede pads with no EQ, but since it handles EQ with no distortion, worth giving other settings a try just to see.
 
Dec 22, 2023 at 9:16 AM Post #6,032 of 7,196
This is really the Caldera tuned Harman!
Where the graph is normalized changes the way people look at the graph, as well as how they would EQ the headphone a lot when there's a target in place. I see different reviewers/measurements normalize the graph between 400 and 1khz and when that target is in place it can make you think very different things and change the eq quite a bit.

Anyways, my practical recommendation for EQ is to grab a Schiit Lokius and tune to taste and not worry about graphs, but honestly I bought the Lokius and I probably use it like twice a year.
 
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Dec 22, 2023 at 9:43 AM Post #6,033 of 7,196
For the AutoEQ, can you screenshot the band settings, I’d like to give this a try. Yes, Amir settings are too boosted and sound off. I haven’t tried the above suggestion of no bass shelf at all but I know I also had a problem the mids, so don’t think I’d like that. I’m perfectly happy with the stock and suede pads with no EQ, but since it handles EQ with no distortion, worth giving other settings a try just to see.
You can get them from here, the whole AutoEQ database:
https://github.com/jaakkopasanen/AutoEq/tree/master/results

be aware there could be several results for the same headphone for the different pads. For the Caldera with stock pads these are the settings: https://github.com/jaakkopasanen/Au...urkka/over-ear/ZMF Caldera (lambskin earpads)
 
Dec 22, 2023 at 9:47 AM Post #6,034 of 7,196
Where the graph is normalized changes the way people look at the graph, as well as how they would EQ the headphone a lot when there's a target in place. I see different reviewers/measurements normalize the graph between 400 and 1khz and when that target is in place it can make you think very different things and change the eq quite a bit.

Anyways, my practical recommendation for EQ is to grab a Schiit Lokius and tune to taste and not worry about graphs, but honestly I bought the Lokius and I probably use it like twice a year.
Kind of cool that you can still buy a stand alone EQ. It seemed everything in the 70’s and 80’s had EQ built in. I could have sworn even on some portable devices. But what I remember back then is everyone always boosted the bass and mids, so nothing’s changed.

The stock Caldera sound seems to let the music breath more. And now I’m back with suede which does amazing job with dream pop, shoegaze type music. Stuff like Beach House, Slowdive, and classic My Bloody Valentine. Has an ethereal sound with more meat on its bones that I’ve never heard in other headphones.
 
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Dec 22, 2023 at 11:39 AM Post #6,035 of 7,196
Please, for the love of god, can we not keep discussing ASR.

To me, ASR is a very valuable source of information, Amir's lab tests are excellent, because of their accuracy and because the type of tests, which give you an objective picture of a device. There is no other site like that.

ZMF provides valuable measurements:
https://www.zmfheadphones.com/measurements

So, too, do others:
https://www.superbestaudiofriends.o...view-and-impressions.12693/page-4#post-396635
https://www.superbestaudiofriends.o...view-and-impressions.12693/page-4#post-396639
https://www.superbestaudiofriends.o...view-and-impressions.12693/page-4#post-396698

For more on the excellence of ASR, please see the following:
https://www.superbestaudiofriends.org/index.php?threads/audio-science-review-review.9827/
https://www.superbestaudiofriends.org/index.php?threads/why-sinad-doesnt-matter.11353/
https://www.superbestaudiofriends.o...coz-sgd1-asr-measurement-discrepancies.11115/
https://www.superbestaudiofriends.o...ments-deconstructing-asr-amirs-hack-job.6442/
https://www.superbestaudiofriends.org/index.php?threads/oh-crap-sinad-can-suck-my-s.11175/
https://www.superbestaudiofriends.org/index.php?threads/topping-l30-review-and-measurements.11164/

Now, can we get back to discussing the Caldera, please?
 
Dec 22, 2023 at 11:58 AM Post #6,036 of 7,196
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Dec 22, 2023 at 12:21 PM Post #6,037 of 7,196
Just an FYI, posting links to this site can land you in some boiling water with the powers that be here on Head-Fi. I'd suggest an edit.
Thanks, I'm not sure it's as sensitive an issue these days as it was a few years ago. I'll leave it up to the mods to determine what to do with the links.

Edit, I think the key thing is for us to provide a fuller picture here, with contrasting perspectives, of the measurements and "science" offered at other sites, and we're fortunate to have Goldenone and Resolve offer yet more insights into the methodology, interpretation, and understanding of measurements.

I'll keep quiet now as I'd prefer to let the conversation about the wonderful Caldera resume. I'm looking forward to more photos of new owners' lovely November Calderas as well as more impressions!
 
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Dec 22, 2023 at 12:40 PM Post #6,038 of 7,196
You do know that Zach has been posting over there as well. So if anything, can check out what he has to say. He also submitted the new Bokeh to ASR for a review but I haven’t bothered to see if that review has been posted yet. So I do find their site relevant at least when it comes to seeing what Zach is posting over there. I personally don’t have an account and wouldn’t want to get caught up in their sometimes crazy arguments.
 
Dec 22, 2023 at 2:27 PM Post #6,039 of 7,196
Anyways, my practical recommendation for EQ is to grab a Schiit Lokius and tune to taste and not worry about graphs, but honestly I bought the Lokius and I probably use it like twice a year.

I agree. That's how I use EQ. Using the RME PEQ to taste when needed (which is rare with ZMF headphones) and not obsess over graphs made life so much easier.
 
Dec 22, 2023 at 2:42 PM Post #6,040 of 7,196
Please, for the love of god, can we not keep discussing ASR.
sorry for that, was not my intention talking too much about ASR but Caldera instead and I started by saying "sorry for bringing this back....." I think I have the right to express my opinion without getting you angry, don't?. And I don't think I am completely out of topic on my post.

Thanks for the links, I appreciated it, but I was not referring to valuable measurements for the Caldera, but about audio devices in general.

Thanks again for links and I think on my comments indirectly agree with these, most of the time is not the graph but the conclusions of Amir. I can understand the graphs and draw my own conclusions, so the graphs are still valuable.

Discrepancies can occur, but is this showing a trend?. About the conflict of interest I was not aware, so I would be more carefully, thanks. But does it mean Amir is faking his measurements intentionally?

As you have seen, @zach915m have been interacting on the Caldera thread of ASR and he has not been objecting his measurements, except for some points that to me are in the normal territory of a technical discussion, the main discrepancies are around the tuning of the Caldera and how Amir stubbornly believes every headphone must be tuned given Harman. And now Zach is "trusting" Amir to review the Bokeh.
 
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Dec 22, 2023 at 2:52 PM Post #6,041 of 7,196
Anyways, my practical recommendation for EQ is to grab a Schiit Lokius and tune to taste and not worry about graphs, but honestly I bought the Lokius and I probably use it like twice a year.
And on the software side there are also some great parametric equalizers like the one integrated in Roon and the "MathAudio Headphone EQ" for Foobar2000 (free).
 
Dec 22, 2023 at 3:14 PM Post #6,042 of 7,196
discrepancies
Just like many endeavors, measurement rigs of various kind, professional or not rigs, can be manipulated physically or electronically to look a myriad of ways. Measurements are really only valuable when the same methods are very carefully taken when measuring each headphone and then when you an directly compare to other measurements taken the exact same way.

This kind of care is rarely taken and why measurements should be taken as "more info" instead of "the info" so to speak.

At the end of the day the answers always lie in between the fodder and there's value in parts of everything. It's good fun... In a way!
 
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Dec 22, 2023 at 3:44 PM Post #6,043 of 7,196
I think I have the right to express my opinion without getting you angry, don't?. And I don't think I am completely out of topic on my post.
Of course you have the right. And I'm not angry. I would encourage you to read back over the past few pages carefully and get a sense of how people have felt about the topic. It hasn't exactly been happy or positive or, frankly, all that constructive, which is why I implored us to move on to more productive and meaningful topics of conversation. And now I've added three posts of noise to the thread, so I apologize to everyone and will post not about this again.
 
Dec 22, 2023 at 4:49 PM Post #6,044 of 7,196
I somewhat believe sending Amir a close to Herman tuned Bokeh, is a scientific behavioural experiment by Zach on its own lol
 
Dec 22, 2023 at 7:32 PM Post #6,045 of 7,196
You can get them from here, the whole AutoEQ database:
https://github.com/jaakkopasanen/AutoEq/tree/master/results

be aware there could be several results for the same headphone for the different pads. For the Caldera with stock pads these are the settings: https://github.com/jaakkopasanen/AutoEq/blob/master/results/Kuulokenurkka/over-ear/ZMF Caldera (lambskin earpads)
So I just tried the setting for the Caldera Suede and to my surprise, I like it more than stock. It opens up the sound more with airier highs, clearer mids, and snappier bass while still keeping all the texture. It’s quite impressive. Location of instruments is very precise. It does all this while still keeping what I love about the suede pads, euphoric mids. I tested it on all the tracks the Expanse and Caldera stock pads with ASR EQ gave me trouble. They all passed and sounded better than stock suede. I still like stock sound but think I’m keeping this EQ for now.

Here’s that link:
https://github.com/jaakkopasanen/AutoEq/tree/master/results/Kuulokenurkka/over-ear/ZMF Caldera (suede earpads)

Edit: so I remembered not liking new Foo Fighters new album on suede pads as much as stock. So even with this EQ setting on suede, stock pads and stock sound is better. I haven’t loaded up the stock pads EQ settings to see how those sound. But it is interesting the EQ suede come closer to stock pads in the highs now. It’s just they still don’t hit as hard in the bass. Stock pads just hit harder with tighter bass.
 
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