Audio Technica R70X VS. AKG612, AKG702, AKG712, & Beyerdynamic 990 (250 ohms) Impressions
Oct 16, 2015 at 4:08 AM Thread Starter Post #1 of 8

Tomkat85

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Audio Technica R70X VS. AKG612, AKG702, AKG712, & Beyerdynamic 990 (250 ohms) Impressions

 
A humble hello to head-fiers, I've just recently joined as a newbie (however have been a long time reader since the last 8 years), thought I'd let everyone know that on Monday afternoon (The 12th) here in the isolated down under Perth, Western Australia I've had a marvelous once a life time opportunity to listen to the R70X and compared it against:  
 
•    AKG612
•    AKG702
•    AKG712
•    And Beyerdynamic DT990 250ohms
 
Let me first express my sincere thanks and gratitude to the warm and really welcoming and easy going hospitality of Perth’s StoreDJ! Even though it took me a 45 minute trip it was all worth it. I am really appreciative once again to have been granted an opportunity for the extra time to listen to the headphones and (for me) to share my impressions and thoughts with them.
 
 

 

Listening Volumes and setup

The portable listening setup
Macbook Pro > Wireworld USB silverplated OFC > Audinst MX1  > Headphone auditioned
 
Please Note! These listening volumes are based on an environment whereby there’s multiple sources of tension around me- noticeable but verifiable factors -  eg. people talking behind me, telephones ringing, traffic bleeding through front door/s, as well as other tension factors such as me clinching over a desk / bending down, standing up, etc. SO YMMV once you’ve got this on your most relaxing state.
 
Volume listening ranges on the Audinst
The R70X - 8- 9.30AM
The 612 - 9 - 10.30 AM (strangely enough, it’s slightly harder to drive than 702s or the 712s….)
The 702 - 8 - 9.45AM (more or less the same the R70X)
The 712 - 8 - 9.45AM (more or less the same the R70X)
The Beyers - 7 - 9AM (this one is subjective as the signature is so distinct, it’s hard for me to determine a listenable range)
 

 
 
The R70X Overall impression
 
One word - Sublimely musical. Sublimely effortless with the bottom end that envelopes the rest of the soundscape evenly. If they are there in the recording and they are expressed beautifully as a basis to LIFT the rest of the musical spectrum without any emphasis on anything else. 
 
Yet also intriguingly enough; the R70X allows me to still able to differentiate and delineate complex passages very well without any sort of muddiness being in the way. That; in itself is a trait that is incredibly difficult to describe. You simply had to put on the almost featherweight speakers on your ears and let your mind explain to you what and how it is meant to sound. 
 
The personifying / the analogy word “LIFT”; I believe is important here; as the R70X tends to do nothing but simply uses the low frequency presentation as an “organic” soil / basis to lift everything else beautifully and evenly at the same time.
 
But does that mean it brings everything else artificially forward to in-your face? No. I would not consider this to be a forward sounding headphone at all. 
 
The R70X produces a pleasant, layered and deep staging that is beautifully just that - beautiful for each and every element of music to express fairly and not competitively against each other for attention. I am a believer that any parts of the musical spectrum, especially on the upper regions no matter how small if emphasised - is what I consider to be a potential factor to fatigue (though subjectively, some may enjoy this sound). However if anything - the R70X simply presents musicality without compromising everything else.  
 
It is neutral, yet the warm bottom end is so inviting to listen to, it’s incredibly difficult to describe the experience as nothing short of complete, insightful experience at the same time.
 

 
 
The Lows / Bass

The lows of the R70X  just “envelopes” itself around the musical spectrum succintly but perhaps incredibly without any bleeding into mids or highs. It is clear at this point that I’m initially drawn to the bass, because I cannot help but thank that this is indeed - the most balanced of all presentation of bass - that is BOTH musical yet visceral and accurate at the same time.
 
For those of you who are familiar with the LCD2 - you may very well indeed be infatuated by its’ effortless visceral, and TEXTURED bass.  I remembered briefly auditioning these a couple of years ago (with my Lehmann Black Cube) and quite impressively enough - that effortless, visceral sensation of the enveloping bass presentation - are amazingly reminiscent to the R70X. Though perhaps of course not as refined nor as deep as what my memory told me and given the price difference (1600 vs 500), but still the authenticity, textural make up of the low frequency presentation of the R70X is palpable and is definitely there.
 
The only thing that is not existent here - is the sub-bass. You will definitely hear the viscerality of every lower regions of it all. But deepest of all sub-bass is not one of them. That remains only what the Beyers or what Audezes can do. 
 
There have been anecdotal reports that the R70X is bass shy, lean, light, too neutral, etc. To my ears and level of tolerance - this is a myth. The R70X is never to my ears a lean sounding phone, considering that I've also been coming from the Alessandro MS Pro - in which that to me was I consider quite bass driven but also to my surprise - the R70X betters it by sounding more "complete" without being just simply an impressive thud.  Unfortunately I had to sell the Ms Pro before I get to listen to the R70X - but from what I can gather and compare from best memory - they are both roughly equal and just as "fun" sounding to each other in their equal merit.
 
Never boomy but enveloping. But most important conclusion? Involving. 
 
     
The mids

The mids are extremely pleasing and unoffensive. It just doesn’t shout at me for attention / trying to beckon as though it is a mid centric phone. Nor is it an upper mid centric phone. Nor does it sound slightly ever “honky” (subjectively adjusted for a certain euphonic effect) like my parted W5000s. Vocals are simply sublime, just sublime and properly shaped.
 

 
I believe Lachlan (as per to his review above) refers to his experience as how male vocals now sounded just as good females vocals do and I completely, completely agree through my observation.  I swear I thought after being brought upon audio technicals sound from AD700, and then W5000 then the Koss ESP 950 for years would had me convinced that all vocal performance sounded the “same”. The R70X changed that perspective for me completely anew. Quite particularly for instance - Amy Winehouse's Like Smoke (Feat. Nas)had Nas really spoke to me convincingly to the point where I feel more engaged to the voicing without glaringly or technically obvious to me. In fact, you could clear see the "outline" of where the voices are in relative to the soundscape.
 
That to me - the separation of the voices as a trait alone - brings a new way of "understanding" the aesthetic, drive and intent of the voices themselves beyond just reading off lyrics.
 
The mids are not as forward as everything else I’ve tried during the impressions. Yes, it blooms like a vintage good tube / valve signature and yet it doesn’t scream or shout for attention either. A real refinement in every senses over any dynamic phones I’ve heard thus far. And yet also - It’s never attunedly euphonic (though I believe is made / adjusted for a specific aesthetic purpose) or as coloured as the W5000 either if anything the R70X was just simply lush without a fat mid section at all.    
 
There was no glare that I could detect as though it would detract the overall experience. The amazing thing altogether too, is - how it lets you listen in to any parts of the spectrum comfortably without somehow missing the rest of information. 
 
 
The Highs
-
…But what about the highs? Is it fatiguing? Absolutely not. The R70X completely passed through my sibilance and fatigue stress test (album - Samantha James - Subconscious) with flying colours in just one listening go. Just one-off listening without me second guessing whether or not the articulation ability of this HP is right for me. This headphone speaks musicality as is skilfully yet tactfully at the same time.
 
Just one listen of the opening guitar riffs / beginning phrase, and violin solo of Samantha's Satellites remained sweet, extended and ethereal without digitally and glaringly obvious to the point of harshness.The amount of soundscape that is entirely attributed into presenting just the upper midrange in this song is quite frankly -  a revelation of the R70X talent / aptitude that it's able to coordinate the elements somehow - just seemed coherent, layered yet still distinct from each other. Thus to my ears, that experience was honestly that much more convincing and most importantly of all - involving and insightful.  
 
Compared to the other phones in the impressions - the top end may lack some bite or grain that excites some people. But to me; this is an unenduring trait for any phones to have and certainly marks a factor for fatigue.
 

 
Album Listening & Test Selections
 

 

 
Samantha James - Subconscious  (various tracks of the album / solo main feature track) 
 
The ultimate sibilance and fatigue “stress” test album. Below are the comparisons against the R70X in mind:
 
On the AKG612 
The AKG612 unfortunately delivers a somewhat flatter layering of the imagery (almost think of it as though it is one depth of plane of sound). But believe it or not however - the AKG612 to my ears sounded a better value than the beyers DT990 due to the fact that all the detailing and precise, microscopic-like surgical light presentation over everything is there for you at roughly 30-40% OFF the beyers price if you look hard enough. What 612 does even better than the beyers - is that yes whilst it can be quite sibilant and harsh -the Beyers is even more so / more prone to be that way even more.
 
 
On the AKG712
Immediately; there is some sense of comfort being introduced thanks to the added bass (pronounced more so than the K702s), the 712 does show some attempt in trying to deconstruct the imagery / layering into separate elements distinctly for sure (it is after all, a detail oriented phone) but is it musical? Absolutely not. The mids and highs are altogether very etched, abrasive yet nonetheless textured to give you the impression that it is indeed detailed. 
 
Is it enduring? perhaps again sadly not. 
 
Pass or fail the stress test? Unfortunately failed. The added bass for some reason “merges” together with some of the spectrum which does often at times sounded like the beyers. Hence there is some V shaped signature apparent going on within the 712. But unlike the Beyers - the 712 at least have slightly more refined mids if however unfortunate that this is what I classify as the cold, “Hi-Fi” sound, which can sound “opaque” at times. 
 
 
On the AKG702
Interestingly, I feel the AKG702 shares more or less the same impression as the AKG712, but without this somewhat “artificial” added sounding bass  of the 712. It has the same expertise in delineating all instrumentation right to their detail without the lows or lower mids bleeding to the everything else. Where as the 712 to me sounds as though it is a somewhat “artificial” in the lower regions - yes the bass is there and yes it seems plentiful, but to my ears it was never as refined nor as "elaborated" or beautifully enveloping as the R70X.  
 
Pass or fail? Hmm…somewhat subjectively failed. The mids and highs can be shrilly at times as well as its’ forwardness to me. Nonetheless - I believe without the added bass of the 712 brings - the 702 is as clearly what the AKG house sound is intended to do - deliver neutrality and transparency as surgically precise as possible. 
 
For this reason and (as I believe it) displaying / retaining  AKG’s intrinsic signature purpose - I think the AKG 702 is SLIGHTLY better than the 712 given that you are after the leaner sides of neutrality. I am confident that the The Woflson WM8740 DAC within the Audinst are honest and refined for neutral critical listening to ensures that what I’m hearing is and should sufficiently be transparent enough to the recordings and powerful enough for the headphones to show themselves through.
 
 
On the Beyers
Unfortunately and dearly sadly, the beyers did not even lasted on my ears longer than a minute or several songs in the album. Even though I try to wait, recuperate my ears,, and play again. The beyers to me did not produce a convincingly welcoming sound at all. It sounded brittle, congested, closed in. And perhaps the only way I do notice about the beyers is that it produces the sub bass, but unfortunately I find it does the same problem as the AKG712 - in that it somewhat merges together with other musical parts as though everything is presented as one plane of sound. 
 
Pass or fail? Definitely failed. The overly and definitely V shaped metallic signature did not let me enjoy nor giving me an insightful experience at all. In fact, this signature is prevailingly strong, that I find it immediately too forward sounding and in your face in all spectrum of the music. This sadly, was clearly too fatiguing for my purpose.
 
 
 
So that wraps up the electronica genres listening session, but what about soul and acoustics?
 

 

 
 
Amy Winehouse - Frank /  Amy Winehouse - Lioness Treasure
(various tracks)
 
On the AKG612
The 612 actually did not sound bad at all though still at times giving an occasional bout of shouty mids throughout Frank’s selection of tracks - but again quite surprisingly - I still find this a better value overall than the Beyers and even at times over the 702s and 712s. The 612 does render all the instrumentations well, and for acoustical performance overall I think it is a good value for money for detail & transparency lovers. 
 
Besides from the shouty mids, the imaging and soundstaging is; as you’d expect - noticeably lacks refinement / is behind the R70X, and is noticeably behind K702, or the K712. But is it such a night and day difference? That is up to you to decide, to me; given the imaging and soundstaging of the K612 is somewhat different in that it's layered more intimately, whereas the K702 can sound at times sound lively and dynamic at times hence giving an immediate impression that it is a wider soundstage. However considering it’s the most affordable out of all the headphones I’ve heard in this session it simply does deserve a worthy mention simply for the fact that the acoustics are rendered with bite, and edge for those who prefer it this way without having to shell out more money for a slightly more refined imaging and sound staging of the K702 or even the K712.
 
 
On the AKG702
The 702 unfortunately fell on the bright, lean and upfront at times; for instance, the beginning vocals of Amy’s know you now turned me off almost instantly before even the first quarter. Thanks to the not so artificially added bass of the 712 - I feel the 702s DOES have the ability to paint a more honest picture better than the 712, allowing the light to be shown the mids and highs more clearly. Though again, it can be too precise to the point of slightly fatiguing. 
 
The imaging and sound staging is nonetheless quite promising in that it tries its best in delineating complex passages, however, given with the above lean presentation quickly and immediately gives the mids a glaring, wildness / forwardness outlook.  Especially within Amy’s You Sent Me Flying - the beginning passages could easily show the downsides of any analytical based headphones, by which the 702s no doubt found in this category - in that it’s immediately apparent that you have prepare to “tense up” a lot in order to absorb and to bear its forwardness in full. 
 
 
On the AKG 712
Given 702’s more leanness than the 712, I believe the 712 gains an extra credit in giving you the bass as incentive to help somewhat fix the overly forward mids, but unfortunately this did not address the underlying problem of the inherent character of the phone itself in that the upper regions are still somewhat hot and given the price point, the K612 in my opinion still serves a much better value in rendering all acoustic instruments with just as much you would expect for a more reasonable asking price. 
 
However in spite of all this, I do somewhat enjoy the 712 with the renditions of that extra edge and bite on all of the instrumentations across both albums. As this no doubt help create that illusion of “texture” from the grain - it is nonetheless the only emotional incentive for me to keep listening on the 712.  
 
Is it worth it in my opinion to getting the K712 over the 702s? Can be subjectively difficult I'd say. However if you do own and expect to hear a lot of soul and with live / studio instrumentation recordings I would perhaps consider the an extra nod on the 712s.
 
But is it musically enduring though that is the question? Unfortunately neither the 702s or the 712s did convince me so. Even with the 712's added bass to "mask" the excess brightness at times sooth me, but at times fails to sustain me as it also somewhat merges / bleeds to the glaring mids as well.
 
 
 
On the Beyers
Unfortunately since the Beyers did not pass my stress test I could not even bother testing on these albums. :frowning2:
 

 
Conclusion
 
 
 

 
AKG612 
For: Detailing, transparency, bite, and VALUE for money. Perhaps best for critical listening. Certainly not as refined as everything else, but an analytical sound that is neither too harsh as the Beyers nor as artificially bass enhanced AKG712 in the lower regions nonetheless reasonably paints a somewhat welcoming, likeable picture of the soundscape is enough to warrant anyone to give some second thoughts. 
 
 

 
AKG702
For: Some noticeable refinements over the 612 in terms of staging, and separation of the spectrum. But beware of the fatiguing factor/s in the upper mids glare as it is also well separated thus creating (to my ears at least) an even more; at times - a forward mids sounding experience. The K612 is perhaps less excessively forward but still is presented a bit brightly, the K702 is refined in that it separates the layers well and away, but it also increases the fatigue factor since it also then brings some elements too forward and some elements a bit too backwards. Still however remains best for critical listening.
 

 
 
AKG712
For: Whilst I feel the added bass of the 712 sounds somewhat unrefined and artificially “merged” - it’s a subjective difficulty for me to recommend either the 702 or the 712. It is clearly up to you the listener and your source and ancillaries to determine whether the difference alone is worth it.  At least to my ears - with the 712 yes you do get some temporary comfort with the added bass - at the expense of the mids being slightly drowned with it at the same time which to me sound a little bit somewhat compressed feel. 
 
I would consider the 712 to be simply a bassier version of  the 702. But with a hint of V shaped tonality. And with this - I believe it would perhaps suitable for gaming as gaming gives an extra psychological incentive to headphones that renders just certain right amount of V shaped sound? It is difficult to somewhat recommend the AKG712 for musicalities I feel because of the lower regions sounded somewhat “artificial” in that they are not as refined or as enveloping I expect in the price range.
 
The AKG712 VS AKG702 debate can be subjectively endless. However given to my ears and experience - if you do listen to a lot acoustics and live instrumentation recordings the 712 I’d feel maybe gain my slight recommendation over the 702 since you will definitely need that extra bass; anything will do - to help somewhat attenuate the excess forwardness of the mids. Or perhaps In other words -  If you are after an AKG house sound “simply” for more bass - the 712 is for you. Otherwise, the staging / imaging performance of these is so similar to the 702 I could not really tell whether the added bass is simply worth it over the 702. 
 
 

 
 
Beyerdynamic DT990
For: Unfortunately, I am not a Beyer brand expert nor have I been well attached to the sound of the 990s, but perhaps best suited for very very critical engineering with mastering grade equipment?
 
I may perhaps be overly harsh on the Beyers so I do apologise to all who are the indeed personal owners of the 990s. However let us stop for the moment really consider the intrinsic applications of this headphone. It is critically bright. Yet it is also critically sub-bassy as well. So I would imagine; that for those who work very, very specifically in the fields of mastering or very specific sides of mixing and monitoring will no doubt find the DT990 useful to monitor any and technically assess the soundscape for any potential problems or issues.  
 
I do again apologise that I’ve been truly unfair to the Beyers but unfortunately, my opinion is subjectively of my own and sadly the Beyers is clearly not within the realm of what I was looking for. If you already do have the 990s and that you are looking to add / interested for a supplementary difference to your library of signatures I would look start looking at either the K612 or the K712 as this gives you a favourable polarity of differences against the Beyers’ V shaped signature sound. 
 
Or better at the end of the day...all bets are off to my recommended conclusion.
 

 
The R70X.
 
 

 
 
I am convinced that in the last 10 years on and off in this hobby; as I’ve already begun the process of downsizing & reprioritising - the Audio Technica R70X could and very well be indeed the "missing piece"  that blends musicality and detail at the same time; a trait that I don't think it exists; yet I know I do wish for it to come one day. And that day has come.Thus perhaps, this could be the only “reference” or "master" phone I would ever buy and keep next to my Koss electrostatics.   
 
The R70X wins over almost every category of what I am looking for - effortless musicality, and delivery of all elements, and details while incredibly it somehow just "instinctually" knows how to attenuate all manner of excess brightness and sibilance and anything of forwardness in the soundscape. 
 
There is a huge sense of relief, after auditioning between the Beyers and the AKGs and when once back onto the R70X. So much so that it did raised me a question “where’s all that bright detail I used to hear but all gone?”. With the R70X, I could simply just release the tension again and just letting my ears observe the musical spectrums as they are.  As they should be. Both sensibly and practically.  
 
The R70X pretty much delivered a toe-tapping experience no matter what tracks I throw at it. Bright or boomy, it just seemingly knows what to do with every material fed to it and in return;  giving me a musical spectrum that shows no bias.  
 
 
Thank you for reading!
 
 
 
 
 
My Thanks
Much of the above once-in-lifetime experience can not be expressed with enough gratitude to the wonderful staff at StoreDJ Perth to have granted me more than the usual time (1.5 hour+) to spend as much time with these headphones. You will surely be missing one more R70X from your store! Kindest regards.  Tomkat85.
 
<Phew> what a long way of typing...
 
 
Oct 18, 2015 at 8:24 AM Post #2 of 8
Foremost, it nice to see a company that understands that headphones are worn on the head and need to be as light as possible, the comfort will follow in most cases.
 
As AKG k702 owner I was interested in comparison with r70x. Now it its a bit clearer where the differences are, thanks.
 
By the way, I had k602 and I must be sincere I've never understood praise for this phone, IMO so many flaws and definitely not worth the price, too close to the k7xx series.
 
Oct 18, 2015 at 9:07 AM Post #3 of 8
  Foremost, it nice to see a company that understands that headphones are worn on the head and need to be as light as possible, the comfort will follow in most cases.
 
As AKG k702 owner I was interested in comparison with r70x. Now it its a bit clearer where the differences are, thanks.
 
By the way, I had k602 and I must be sincere I've never understood praise for this phone, IMO so many flaws and definitely not worth the price, too close to the k7xx series.

 
Hi loopfreak,
 
Thanks for the compliment :)! Firstly though I should mention I rarely give any extended impressions on Comfort and build quality in any headphone; usually by default if it is reasonably well built and comfortable I usually made a quick statement or two in a hindsight as an assurance that there's no flaws or matters of concern. Unless of course, if it speaks glaringly obvious at times (like my Koss ESP950's plasticky construction and its' squealing in various day/s) - then I'll highlight them in detail.
 
To me the K702 represents a very hifi sense of neutrality; it still remains very, very difficult choice to determine whether the 612, 702 or even the 712 would be the "perfect" AKGs that anyone would be able to enjoy without having to first realise that they need to "tense" up and clenching their ears to prepare for each listening session. However - I can honestly say with all my heart that yes, the 612 has its own flaws, but at the price point it cannot be ignored in my opinion. Sure the mids are a bit shouty like its siblings, the soundstaging may perhaps be less "exciting" / dynamically precise and lively as its siblings.... However again, given the price difference, I'd still rate the 612 a better value than the 702 or even the 712 overall I don't think those will give a worthwhile step up...to my ears and humble setup that is.  
 
The R70X is to my ears, needs, wants which have enveloped itself over the last ten years on and off in this hobby - is a clear step up and a remarkably musical difference to almost anything I've heard thus far. That includes the fact I loved the R70X's qualities similarly to the LCD2s and Denon D7000s I've auditioned years ago (and the sound sig memory still rings firm in me to this day). Those are already (IMO) high end territories. I may rant a lot about the R70X's forgiving qualities, but amazingly it doesn't lack detail either. They are there but just attenuated and presented more "tactfully". 
 
For anyone still wishing as though there's a "combination" between musicality and neutrality - I would have no idea what to recommend further if you are not happy with the R70X's. I don't like to use the word "unique" but the R70X is certainly an offering for the very first time and within a reasonable price - that it exceeds me, and my expectations. And my expectations are fairly high given the year/s of GAS anxiety all those years. 
 
Very interesting that you've had the 602s. Some people apparently swore by them more than the 701s..thx for sharing your experience!
 
Oct 18, 2015 at 9:10 AM Post #4 of 8
Although I guess I have to say this out loud as a conclusion as well - that despite its' problems - ANY ONE of the AKGs are nonetheless noticeably more forgiving and engaging to listen to than the Beyers 990s....that to me is already a well absorbed statement and experience. Hope this helps. 
 
Oct 18, 2015 at 5:52 PM Post #5 of 8
Firstly though I should mention I rarely give any extended impressions on Comfort and build quality in any headphone; usually by default if it is reasonably well built and comfortable I usually made a quick statement or two in a hindsight as an assurance that there's no flaws or matters of concern. Unless of course, if it speaks glaringly obvious at times (like my Koss ESP950's plasticky construction and its' squealing in various day/s) - then I'll highlight them in detail.

 
Well, I am constantly bitchin' about headphone weight these days. Frankenstein construction phones with hyped prices, one of the reasons. For me weight/comfort is as much important as a sonic quality, but thats me.
 
To me the K702 represents a very hifi sense of neutrality; it still remains very, very difficult choice to determine whether the 612, 702 or even the 712 would be the "perfect" AKGs that anyone would be able to enjoy without having to first realise that they need to "tense" up and clenching their ears to prepare for each listening session. However - I can honestly say with all my heart that yes, the 612 has its own flaws, but at the price point it cannot be ignored in my opinion. Sure the mids are a bit shouty like its siblings, the soundstaging may perhaps be less "exciting" / dynamically precise and lively as its siblings.... However again, given the price difference, I'd still rate the 612 a better value than the 702 or even the 712 overall I don't think those will give a worthwhile step up...to my ears and humble setup that is.  

 
AKG k702 neutrality, sense of space, imaging, neutral tone with the price of under 200 is exemplary. AKG k702 is not all rounder and definitely not for someone looking a headphone that will "eat" any genre and any bit rate.
 
The R70X is to my ears, needs, wants which have enveloped itself over the last ten years on and off in this hobby - is a clear step up and a remarkably musical difference to almost anything I've heard thus far. That includes the fact I loved the R70X's qualities similarly to the LCD2s and Denon D7000s I've auditioned years ago (and the sound sig memory still rings firm in me to this day). Those are already (IMO) high end territories. I may rant a lot about the R70X's forgiving qualities, but amazingly it doesn't lack detail either. They are there but just attenuated and presented more "tactfully". 

 
I must admit, I am very intrigued with r70x. Next logical step would be shop audition.
 
 Very interesting that you've had the 602s. Some people apparently swore by them more than the 701s..thx for sharing your experience!

 
I remember back in a day, when posted an honest opinion about k602 in self named thread, I was immediately attacked :D I really wanted to like this headphone, but upper midrange peak that was uncontrollable, three blob soundstage, roll off in high tones and bass lacking in every way, texture, level and extension was way too much.

 
Oct 20, 2015 at 5:02 AM Post #6 of 8
Thanks for the great review, I wonder why it is not getting more applaud. I compliment you for boldly expressing your honest opinion, I have read some R70X review overdone in trying to be objective that is lengthy, wordly but not getting to the point. And yes, I pretty much agree with your impression of the R70X.
 
Oct 20, 2015 at 9:47 AM Post #7 of 8
A humble thank you Greeni!
 
I've been in this hobby on and off for ten years so yes I know what you mean - I hate reading those  going-off-the-rails / philosophical talk kind of reviews; especially 6moons, and some positive feedbacks' too how I'm surely mistaken I'm reading a lengthy shakespearean theatrical segment than it is ABOUT THE DAMN SOUND QUALITY / review of the equipment!
 
deadhorse.gif

 
Which pretty much sums up the sad fact that these people are paid to do for a living. I would rather read a brief few sentences about the actual sound quality than it is about someone's ranting off to the clouds somewhere else.
 
Oct 24, 2015 at 8:05 AM Post #8 of 8
Sorry got busy with work relations. Ok folks here we go next round of updates particularly the R70X with pairing with drum rolls....... also copied pasted to my other R70X thread as well ..... 
 

 
R70X on valve amp (Audiotailor jade)  VS NuForce HA200!
 
 

 
 
Setup:
Macbook Pro -> Wireworld USB Silver OFC -> Audinst MX1 as Wolfson WM8740 variable output 100% -> Jade / HA200
OR
Macbook Pro -> Wireworld USB Silver OFC -> Cheap asynchronous USB Sabre ES9023 DAC -> Jade / HA200
 
Power (apologies I should also elaborated this further before)
From wall -> Cattylink / Analog Research Silver Raincoat -> Yarland AC6 power grid.
Power cord for amp : Shunyata Research Diamondbacks
ICs from DACs to AMPs: Acthung audio silver 5 wire solid silver litz RCAs
 
Accessories
Precision Audio - Cable Elevators(Cable Lifts)
On the chunky cattylink analog silver raincoat
Tubes on the Audio Tailor Jade
Russian 6AS7G (not those fancy NOS ones, this is still the one I’m using as a stock when bought with the amp still working perfectly fine to this day). So in this test I will be testing R70X elligiblity across 12AX7s that I have in stock.
Isolation cones:
made in japan heavyweight carbon TAOC TITE25s (bought these $350SGD, even though yes the changes in SQ are there - never again I’ll be spending that much!!!)
 
 
 
Overall impression R70X with Audiotailor Jade 
 
the bad....
First things first - :frowning2: quite strangely enough - even on low gain the Jade already drives more than enough volume around 7.30 o’clock. Contrast to the HA200 it's around 9 which allows some reasonable proximal adjustments.Unfortunately this is quite a big negative for me as it doesn't allow to have precise adjustments :frowning2:.
 
 

 
 
the good / tube rolling notes
But nonetheless what did I hear GENERALLY SPEAKING? My goodness the lower midrange bloom, drive and force is there. And is there even more aplenty. Does the R70X makes it muddy? To me, perhaps. However it did not sound excessively so. There is WEIGHT to almost everything. Even more so than the Nuforce HA200.  My notes on the tubes below
 
  • Electroharmonix 12AX7 -
    I find this to be the most "neutral" baseline of all 12AX7s I have. It neither performs amazingly on one area or specific area of listening. Perhaps an ever so slight smudging on the separation of vocals. On the Nuforce HA200 however, the voices remains well separated and distinct no doubt. This could be well attributed to the fact that the HA200 whilst being a solid state - is definitely more resolving whilst does sounding noticeably drier at first. Had this tube since DOGE6210 days (5 years+) no problems.
  • Tungsol 12AX7 -
    noticeably more “dynamic” and “airier” sound staging than the electroharmonix 12AX7. The vocals may perhaps leave me a little bit more wanting. In other words, I find that whilst the tube musicality was indeed alive in many degrees, it also somewhat smears the impressive voice separating ability. The Nuforce HA200 retains that impressive separation ability.  Had this tube since DOGE6210 days (5 years+) no problems. I find however it can get the soundstaging together with punchier bass may sound too lively with the R70X. 
  • Jan GE PHILLIPS 5751 -
    Impressive midrange euphoric blooms, even more so than the Electroharmonix 12ax7 and the Tungsol  but amazingly thanks to the R70X intuitive coordination of elements actually prevents it from to sound nasal. Had this tube since DOGE6210 days (5 years+) no problems. However interestingly with different DAC (the Wolfson WM8740 in the audinst but using variable RCA 100%) - the voicing separation is better, but still not as accurately separated on the HA200  .
  • JAN GE 12AX7 -
    Somewhat a middleground between the Tung Sol 12AX7's wide soundstage  with the noticeable of bloom of the midrange of the Jan GE 5751. Still somewhat lacks detail of the Tung Sols.
  • Sylvannia 12AU7 - 
    a bit shouty in the mids. Voices sounded good. Separation wise difficult to distinguish if it’s any different to the JAN GE 12AX7. 
  • RCA 12AX7 - THE BEST BUT ALSO BUZZIEST WHEN ADJUSTING VOLUME
    Very nice sounding for the R70X & the audits as the DAC! Subtle has a tactful nature to the way it handles each and every thing in the mids. The bass is solidly forceful it really lets you be in the serious head-nodding “zone”.  Micro details are very well resolved enough for me to gather what I liked from the HA200. Voices sounded good. Although out of all 12AX7 tubes I have - this ones produces a buzzy noise each and overtime I adjust vol. The volume adjustment opportunities however, are again my biggest issue as I had to lower the master vol output from the Macbook or the PC, as this to my ears I find the best compromise in volume control VS loss of dynamics as opposed to reduce the RCA output volume output from the Audinst.  The BEST SO FAR next to Tungsol 12AX7’s and Jan GE 5751 (if I only want that romantic blooms).
 
 

 
Conclusions & thoughts of R70X between DACs
 

 
Long story short; it is a subjective requirement and decision to choose between a valve or a solid state amp. With the jade I swear I was (*%7#IO52) my head off with even more lower bdy and lower mid range vividness and more plentiful delivery of it. Also depending on which tube I’m using (especially on the 12AX7 Tungsol) - the soundstage can  also sound more dynamic and livelier, though to me it can sound too "fun" to the point of fatiguing (especially combined with the lack of volume adjustment proximity range on the jade).  Is it the type of valve amp? OTL? etc? Unfortunately I am never the technical type to know and understand...but I do know and reassured however is that Jade is truly a hybrid. 
 
Two things I do notice for sure. Vocals - on the Jade do somewhat (though only perhaps ever so slightly) loses their separation factor I loved on the R70X so much, and that resolving micro details and ambience of the HA200 can be somewhat a little lacking on the Jade. However, I find that this can be improved unless if I were to use the best / more/ most expensive  sounding 12AX7 I had collected in the past - eg. RCA 12AX7. The other thing I do notice is that the Nuforce HA200 is perhaps slightly more resolute / more resolving in picking up more details for the R70X then to magically coordinate them tactfully to my ears. This translates to giving that more refinement factor better than the Audiotailor jade. The Jade however, being the hybrid valve amp that it is - meant to be built for musicality.  
 

 
 
Also now that I have listened the R70X across two DACs I must say the Sabre ES9023 is the more resolving, wider soundstage and imaging HOWEVER, the Wolfson WM8740 in the Audinst DOES THE DEPTH of imagery so much more intimately with a sense of perspective - it fits in with my definition of musicality perfectly even though it lacks resolving micro and surrounding ambient detail retrievals from the Sabre ES9023. So with the R70X which one would I consider more superior DAC choice? There is none! The Sabre ES9023 is definitely in my book for overall more resolving performer with outstanding micro and very widely spaced and impressive detail retrievals. Where as the more musicality choice from the further elusively deep imaging I would definitely lean with the Audinst’s Wolfson’s WM8740 DAC with the RCA output @ 100%. 
 
So is the R70X DAC / source sensitive? Given my experience - absolutely. Everything counts, even in minimal steps. Even my now-sounded-extremely grainy AD700 and recently acquired HD598 improves scalably well. 
 
Getting back to the amps debate Does this mean the tube is then superior for the R70X? Not necessarily. When I listen onto the jade I am rewarded with even more musicality. With the HA200 (solid state) - I am rewarded back to that balance of neutrality with just enough musicality to keep wanting to listen. Plus most importantly on the HA200 - I find there is more leeway for good comfortable volume adjustment. This to me is an excruciatingly IMPORTANT HEALTH & UX FACTOR. The Audiotailor Jade is unfortunately, only offers me that small degrees of adjustment before it’s too loud on the R70X.
 
I have never, ever have any idea to understand why people complain this not loud enough, that not loud enough, even if they have 300ohms Beyers, sennies, on powerful amps like the DOGE6210 & Lehmann Black Cube Linear  (which I previously had and DOGE was all broke), the audinst-MX1 (which I have), and the Nuforce HA200 (now) etc. 
 
Heck even the R70X drives quite well out of my Macbook Pro (tested for curiosity) !!!!! Of course sound wise its just not as refined. 
 

 
 
However at the end of the day - which of the two amps provides me best overall balance & usability? I’d say I would choose the Nuforce HA200. Why? because the usable extra room for volume adjustment helps IMMENSELY for comfortable listening. If I have to be evicted by the banks / foreclosed / homeless, etc - I would unfortunately have to sadly say goodbye to my Audio Tailor Jade
 
 
Enjoy the extra food for thought!
 

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