RAAL-requisite SR1a - Earfield™ Monitor/Headphone - Official Thread

So I just found in another forum that burn-in time for these is a very real thing for the ribbons, and though burn-in in general is controversial, and there’s the brain getting used to a sound profile as well neurologically, so I started burning in for a few hours per day alternating music and pink noise at levels towards the higher end of medium, keeping in mind to be way out of a range that could damage anything.

I read on a semi-rando article online that new headphones shouldn’t be used m ore than 4.5 hours per day, not sure where that came from, but it did get me concerned, is there any reason to think that’s the case?

I’ve had my SR1a for about 1Y and 4 months and I put way over 2000hrs on them. I also have a set of new Ribbon cartridges sitting in the box, I’ve swapped them and there was absolutely no discernible difference in the sound of new vs used ribbon cartridge.

I would love to read the reports of users finding burn-in to be a real thing for these. Maybe it requires more than 2000hrs or it’s in fact brain burn-in that is required to get used to the cleanliness (read clarity) of the ribbon sound.

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Before I downsized in 2004 I had a decent dedicated listening room and my last speakers was a single range ribbon per side that went from 100Hz to as I high as I could hear at the time, crossed over to 4 x 12" woofers per side and flat with proper placement to 25Hz in my room. Absolutely the most accurate reproduced sound I’d ever experienced in my 4 decades as an audiophile (at that point in time) and since, that put a premium on everything in front of that transducer all the way back to and including the source recording quality to get the best from that speaker.

I was over the moon when I heard someone was actually tackling putting a full range ribbon in a headphone (headphones get a lot more listening time than my current bookshelf with subs set up since I retired).

I find myself back in the same situation with the SR1a, I’m back to wrestling with everything in front of the transducer all the way back to and including the source recording to get the best from this headphone. It’s Déjà vu all over again.

I still enjoy both my HD800S and 1266Phi at times for a change of pace and to deliver the sound in a different way. Each of the 3 have there different strengths and weaknesses, but the clarity of that full range ribbon is tough to beat for me.

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so I’m a little confused here. when you say you’re back to wrestling with everything in the sr1a, yet you love ribbons, is that saying you love the sr1a, or don’t, or somehow in between?

I do find it odd that I’ve read people saying burn in makes a huge diff on the sr1a, but then mrcypruz saying not when he swaps out older and newer ribbons. Could it be some aspects of what is not swapped out in the unit? what exactly is in the headphones themselves other than the ribbon cartridges?

I said “I’m back to wrestling with everything in front of the transducer…” searching for the best combination of components to get the best out of the SR1a headphone. Put another way, of the phones I own, have owned, have rented, and have experience with, most (electrostatics excluded) have struck me as more forgiving to varying degrees, but not completely, of the electronics and recordings feeding them. But, what I feel is best may not be what someone else’s best will be.

Whenever I’m listening to a new HP the initial sessions are about getting to know what, if anything, is different or special about the sound that differentiates it from other HP’s. As many others have stated it is probably more about brain burn-in then equipment burn-in. More about getting familiar with what the HP does that’s different from the others I have experience with. I’ve proved this to myself on many occasions by simply not listening to my other phones for several weeks, going with a steady diet of one phone for say 2 months. When I switch back to one of the others the differences are pretty easy to discern and the process of brain burn-in happens again but in a much shorter period of time because of past familiarity.

Maybe its a part of the brains ability to adapt. As when you read a long sentence with words that have their first and last letters reversed, or with missing words, your brain, based on past experience and knowledge can automatically correct or fill in any blanks. For a music listening example; back in January of this year, before the pandemic got momentum here, I attended a concert in Philly of the Rachmaninoff 3rd Symphony. In the week leading up to the concert I listened to several different recordings of that symphony (my SOP before a concert) and I’m impressed by how accurately my rig(s) reproduced that “live” sound. Then I attend the concert and the following day I revisit those recordings and wonder how my brain could have had me suspend belief that the “canned” experience was so like to the “live” experience. It’s always like that for me, the brain is an amazing organ.

Is the SR1a the best at everything? Well, not from my perspective, while the deepest bass is all there detail wise it lacks the physical impact of say my 1266Phi, my now sold Utopia, and even my HD800S. But they have their shortcomings in other ares of the frequency spectrum. There are always compromises, its a question of which you accept and those you can’t for your personal listening criteria.

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This was really well said! There is no such thing as the “perfect” headphone.

Personal preference goes a long way here I think, as well.

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Wow, FLTWS, that was a super helpful post, makes so much sense. And in front of the transducer, yes, got it!

Brain burn in. Nothing speedy about that. Unfortunately, I was hoping to compare these units and sell the one that was useful for my needs before my bank account fully realized what was going on. Will need to look into other plans now.

One thing I experimented with last night was opening the wings to be at right angles from my head. This may sound crazy, but with a bass boost via eq, this sounded almost identical to my monitors, not only in freq response, but sound stage and imaging. I was damn impressed. Unfortunately, I soon realized this lead to distortion in the bass even at relatively mild volumes, and when I closed the wings I got a sense of just how much bass I was asking the unit to pump out.

Bringing the wings back to flat on my head it needs the least bass, but everything sounds flat, while semi-open, its hard to get it to sound like one single unified and coherent soundstage with clear imaging. I realize that extended tweaking will likely get that right, but its hard to find the sweet spot for all the parameters. It may just take brain adjustment. What I’m not experiencing is the out of the box wow and reference clarity that so many reviewers are. Perhaps that is because while my brain is quite used to reference monitors, it is not used to reference cans, and perhaps the issue is there. Then again, the HEDD sounded fine from the start. Not sure.

This is some small freq tuning in the upper mids of the HEDD that, with no eq, sounds a little ‘cheezy’, for lack of a better term, and I don’t notice that on the sr1a or my monitors. The HEDD are also non-fatiguing at all (and I don’t find them that heavy, FWIW, quite comfortable), but the sr1a is definitely fatiguing.

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It may be due to your amplification.

amplification is the Jotunheim R, so I’d doubt that. Could be my dac, but then I’d likely hear it on the HEDD too.

I’m guessing the HEDD is close to my monitors in tone, and the sr1a isn’t, and so it’s likely a brain burn in issue.

Out of curiosity, how long does it take until the brain ‘burns in’ on new cans, so to speak? Is it more a matter of time listening to the cans per day, number of days with consistent listening, or some mix on average? Just curious about an approximate time frame, most likely need to delay final eval on these units until that really sets in.

Brain burn-in? I don’t think it works that way, there is no formula, maybe more of an experience thing, absorbing sound information about how something sounds. It may work differently for different individuals.

Brain burn-in isn’t a scientific term, simply some layman’s type words cobbled together that may help explain what goes on with extended listening to something. A sense of recognition regarding sonic characteristics that can be consistently identified and can be applied in a comparison to something else.

And, as Baron Von Frankenstein says “No two brains are alike” so…

“Damit Jim, I’m a bean counter, not a neurological / psychological specialist!”

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Raal posted a video today walking through setting the fit of the SR1a.

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Interesting…they did a silent revision on them. My baffles don’t have the spring to adjust the angle. He even mentions that they’re “new ones” at ~0:05. I definitely can’t bend my baffles as he did at ~1:30.

Thanks for sharing the video!

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(The adjustment video is quite helpful, but after playing with mine a bit, it’s mostly about comfort. Seems that so long as the bottom of the ribbon cartridge presses up against the ear, that’s the big thing in terms of sound. I wouldn’t worry about missing much with the adjustor connection so long as you’re comfortable and the ribbon cartridge presses up flat against your ear in closed mode).

So I finally got my mac to put EQ on my headphones (had to route it through my DAW, oh well), and this lead to me making custom eq curves to match my monitors playing professionally mastered reference tracks (from tidal) for the sr1a in closed, slightly open, and rather open modes, as well as one one for the Hedd with Can Opener (sr1a not only doesn’t seem to need CanOpener, but sounds less like the monitors with it, unlike the Hedd).

Both take to EQ nicely, and I’m really, really pleased with both now that EQ is involved. I was super hesitant to mess with the eq of either, figured get my brain used to them instead, but this approach worked quickly, and is likely to evolve over time. I’m using the linear phase eq in Logic Pro X, and I basically lowered the standard culprits by ear (2.5k, 4k, 8k) to varying degrees of width and depth to taste by ear, slight bass boost, and shelf on sub-sonics on either side to protect against rumble or shriek while adjusting. Spent a few hours tweaking this.

With Eq, the sr1a really shines. Sounds supremely natural. Each adjustment of the baffles needs a slightly different variation of the curve, but once saved as presets, easy recall. Now I hear the soundstage and imaging cohere in ways I didn’t before, and I can get it to sound closer to my monitors than the HEDD with Can Opener.

I’m still not sure I can get the sr1a to be non-fatiguing by eq, cause by the time I got these curves finished my ears were toast for the night. From what I can tell, I can also go flatter on the eq curve with the HEDD without it sounding fatiguing. The curve I have for the HEDD has the bass flat, and it still sounds a bit u-shaped compared to the sr1a, and more enveloping.

Hard to say which would be the better tool in the long run. I suspect now the sr1a, need to listen more when ears are fresh again. HEDD is still very impressive, if a little more traditionally ‘headphone-like’ in sound, which is fine, the sr1a is a slightly different thing after all.

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I don’t see any spring on mine either but its not clear (or close enough) in the video to see what it looks like.
Don’t know that I actually need that adjustment for myself. Mine was purchased 10/21/19.

None of the photos on their site seem to show any spring arrangement either, (that I can see) but it looks like the basic offering now comes with a 4 foot extension cord and different connectors on the cable than mine were delivered with.

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I don’t think the “spring” model is out in the wild yet… I wonder how easy it would be to upgrade this ourselves as everything seems to be upgradable at home on these.

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They’re already in the wild! Here’s a pic of a friend’s SR1a:

image

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I still can’t see where this “spring” is. Can somebody throw on a arrow to this spring on the photo? TIA.

Well I’m happy to report my sr1a experience is changing pretty rapidly. Maybe its because I’ve been playing pink noise at moderate levels for hours at a shot when I’m not using them. Maybe its my ears adjusting. Maybe its the learning curve of switching from medium range monitors to high end headphones.

Playing with the eq and comparing to the harman curve, I figured try removing the move fiddly adjustments I had made last night, and see if I could just locate the fatiguing freqs that way.

Sure enough, the problem energy was around 14k. Rolling that off with a sharp filter, in ‘wings closed position’, I can listen just fine with a completely flat eq except that high end roll-off for fatigue purposes. With wings ‘semi extended’ a minor bass boost of 3 db with gentle shelf centering around 150Hz was enough, and even that wasn’t needed, more to taste.

The result either way is super flat but relatively non-fatiguing, and super resolving. I expect the remaining fatigue to go away over time, and eventually I expect these will equal my studio monitors for mixing. I can hear the precision and flatness and tons of detail (currently listening to Steely Dan’s ‘Royal Scam’ on tidal, hearing entire new instruments there I hadn’t noticed before as we speak).

I suspect I will sell the HEDD, but want to give it a few more days to see if the fatigue fades with regular use the new hf rolloff. Don’t get me wrong, the HEDD are incredible, half the price, more immediately pleasurable and traditional headphones, completely non-fatiguing out of the box, and despite what people have said, i find them super comfortable. It’s just my bank account is already screaming.

I think some of this can be chalked up to my odd mix of longtime recording and mixing experience with monitors, coupled with almost zero prior experience using cans for anything but tracking, and otherwise viewing them really askance. My sinuses have also been a little cranky the last few days with very light seasonal allergies. But I think its mostly the learning curve.

Really appreciate the input folks, super helpful. Will keep posting as my experience with these and the HEDD changes. I can say quite comfortably I’d mix on either with no hesitation. There is a slight tuning issue somewhere in the HEDD I haven’t located just yet, but I’m sure corrective eq would catch it. The HEDD really does sound nearly identical to my Neumann monitors in out of the box tuning. With the minor hf rolloff, so does the sr1a, but with what is likely greater accuracy. But I do hear that the bass on the HEDD comes in part from resonant cupping of the ears, even with crossfeed, and for the first time I guess I’m seeing the downside of that. On sr1a, the sound is presented coming at you in a more speaker like way.

One reason for me investing so heavily in sr1a is that 3.4k (what I paid for it in mint used condition, sticker still sealed on unit?!, with jotunheim r) will get one ‘mid’ range monitors, but absolutely TOTL cans. Since I’m going back to mixing in a small apartment, it seemed a logical move if I could make it work, and while clearly beyond pricey, perhaps more bang for the buck in terms of monitors. Granted, I will still upgrade from my Neumann monitors eventually, but bank account needs to recover.

Also worth saying that it’s also genre dependent. I record rock music. Listening to vocal music on the sr1a (Moses Sumney’s Aromanticism, wow), I find no eq of any sort needed, even in ‘wings semi-open’ position. It’s glorious.

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Actually Verisonix made a dual driver headphone with electret high end that was pretty cheap. Also marketed by Mitchell & Johnson. Close out on the Verisonix was around $50.

I don’t think they have changed the frame. If you look closely, there is a small thin horizontal piece of metal connecting the back of the frame from each side to the round knob at the front that holds the driver casing. That thin horizontal piece I think is the “spring” as it is quite malleable and does spring back and forth

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