[Davidzak64]

IMO, The green driver Bass light version are incredibly good sounding headphones when driven with the proper amplification. I haven't heard the other version, but these are technically better than anything else that I own when slightly EQ'd. They have amazing timbre and excellent imaging that I have yet heard from any other HP I've experienced. Finding a pair that is still going strong is certainly a treasure that should be cherished.

 

[richard51]

IMO, The green driver Bass light version are incredibly good sounding headphones when driven with the proper amplification. I haven't heard the other version, but these are technically better than anything else that I own when slightly EQ'd. They have amazing timbre and excellent imaging that I have yet heard from any other HP I've experienced. Finding a pair that is still going strong is certainly a treasure that should be cherished.

I dont doubt you one second...

I never listen to the Green light version....

i own the bass version.... Yes they disclose a timbre experience i never heard as so realistic ever before.... Not only the imaging beat anything else i know but they are 3-d holographic.... This means that instruments are never distributed on a wall of sound , a surface inside the head or between the ears.... They make each instruments a volume of his own distributed outside the head in part only or completely, studio recordings are different than public recordings on this aspect most of the times....

Their bass is natural and deep, their highs never fatiguing .... I will say it bluntly, all my other headphones for me are unsatisfying and so different of the K340, they exhibit a common trait : artificial sound and unnatural soundfield....A treasure yes the K340....

The reason why they are magical is not the hybrid technology by itself, it is this idea that a shell/cup is a room, and like my dedicated audio room , the shell/room/cup needed Helmholtz acoustic resonators and diffusers... For the AKG engineers of this golden era, the shell/cups was not a passive empty container of the drivers, as most designers today think about them, a passive receptacle for their refined drivers, no, the shell/cups was thought as a complex acoustic chamber which must be put under acoustic control. like i didmyself in the past with my hundred fine tuned Helmholtz resonators in my room....

Some contemporary designers even strapped the drivers along the head with an headphone without even a shell, for sure the experience must be speakers-like in a way, but gluing our ears near speakers dont make the soundfield more natural and then always necessarily better ....

A realistic sounds in day to day normal experience is a complex mix of direct and indirect waves, the art of room acoustic, is the art of timing these two kind of waves and the art of creating a balance ratio between absorbing, reflective and diffusive surface and volume.... The AKG engineers were acousticians and they used the shell/cups in a pro-active way like an acoustician will design and use a room... This dual chamber created by the 5 passive resonators is the secret of the magical spell of the K340....

 

[Majoox]

I would definitely hesitate to pick up a pair now unless I knew how to repair or re-bias electret diaphragms.

But, back in the day, this was a very good headphone. Considering how little peak sound quality has moved since 1979 when the SR-Lambda came out, it could still very well be competitive with good headphones today if you could somehow find a set in good condition.

I can only agree with you, a large amount in this thread is constantly repeated, but I have made exactly the same experience. For me it took five copies to find a K340 that sounded like you describe.

For a re-bias I asked a specialist around Stax electrostats and he says that the effort is unreasonably high, the chance that it works later 1.) evenly matched and 2.) at all, is medium.

Good models have an peak at 2,5 kHz on the measurement like all K340, but you won't notice it disturbingly. Bad models can hardly be listened to, as it is extremely annoying without EQ. Interestingly, an SR Lambda Pro and Signature from that era also has a peak at about 2 kHz called "Lambda shout". The characteristic of this peak is similar to the bad K340s.

I would say that a good K340 can attack the 300€ price range. The named SR Lambda models heard by myself on a recapped SRM1 MK2 quickly reveal more nuances and more consistency, but you lose the character of the K340, which is very special. However, the surcharge is worth it, but the big negative argument is the necessary electrostatic amplifier which I can not use with anything else.

 

[richard51]

Majoox is right for sure....

That is a pity that this marvel was never redesigned and improved.....

Manufacturer look for a good design yes, but not a too complex one and not one at a too high cost....And not for one which will have appeal to few people...

The era for big headphones with internal complex chamber is over and if it is not, miniaturization is the way (earphones)...

The "magic" of the K340 is an acoustic phenomenon i doubt i will have it with any other headphones existing now at any price, so better they could be on any other acoustic counts .... Timbre naturalness is the most important acoustic factor because if you dont have it you have nothing....

I dont doubt that many costly TOTL heasdphone of today can give timbre naturalness for sure as the K340 does.... But like your two legs are necessary and fundamental to walk, there is another important condition... Two legs are not enough, you must enjoy freedom to walk where you want to go....The other main necessary acoustic factor for me and very important, is 3-D holography, and i doubt that without a dual chamber in the shell created by these 5 passive resonators, i doubt that this "magic" will exist with any other headphone....

Putting the best drivers in the world in an empty shell is not enough, a shell must be put under mechanical acoustic control like an audio room must be to be called a dedicated audio room....Helmholtz resonators existed already in ancient Egypt temple to control the acoustic of a room ....It is physics here....An empty shell and an empty room need devices to be acoustically tamed....Then the best drivers there is , glued in an empty cups, are not enough, this is the reason why AKG engineers worked with these 5 passive resonators to install an acoustic control....This ask for much research design and money to install it rightfully....AKG abandon it because of costs mainly and the changing customers market.... They never abandoned it because this did not work as it is supposed to do , this worked "magic".... This is why there is a cult around the K340 till today....

We can only hope that our K340 will survive, and we will can only regret it if we lose it.....

 

[richard51]

I forgot to say that the more precious quality of my K340 is erasing in me all desire to buy anything else, because i am afraid to be frustrated and deceived by any thing else.... No other of my past components never did that.... I can upgrade easily my dac and my amplifier or my speakers without fear and witouth error.... I even know what piece will do the job without even had the need to listen to it before buying....

My God! with the K340 it is impossible to complete this task of upgrading .... Which other headphone had this "magic" ? It seem that nobody knows because no one can give an opinion without having in his hands already a working pair of K340 to compare with others....And anyway most people owning speakers and headphones did not know what is 3-d holography in headphone or in a room/speakers environment because they never experience it to begin with, and anyway they dont understand why this acoustic control is possible and how to implement it in the first place.... I am not myself an acoustician for sure but i was never only a passive consumer either....

 

[Davidzak64]

I forgot to say that the more precious quality of my K340 is erasing in me all desire to buy anything else, because i am afraid to be frustrated and deceived by any thing else.... No other of my past components never did that.... I can upgrade easily my dac and my amplifier or my speakers without fear and witouth error.... I even know what piece will do the job without even had the need to listen to it before buying....

My God! with the K340 it is impossible to complete this task of upgrading .... Which other headphone had this "magic" ? It seem that nobody knows because no one can give an opinion without having in his hands already a working pair of K340 to compare with others....And anyway most people owning speakers and headphones did not know what is 3-d holography in headphone or in a room/speakers environment because they never experience it to begin with, and anyway they dont understand why this acoustic control is possible and how to implement it in the first place.... I am not myself an acoustician for sure but i was never only a passive consumer either....

I'm still searching for an adequate replacement that will match the Magic of the K340 imaging. When I find it, you will be the first to know. I can say that I won't be spending over $1,000 on the used market. I have my eyes on getting the Hifiman HE6, Stax model? or the HD800s. From what my research tells me, imaging and soundstage are highly rated on these HP'S. I might be chasing something that doesn't exist. but there's a good chance I strike gold also.

K340 stock ( green team )

 

[richard51]

I'm still searching for an adequate replacement that will match the Magic of the K340 imaging. When I find it, you will be the first to know. I can say that I won't be spending over $1,000 on the used market. I have my eyes on getting the Hifiman HE6, Stax model? or the HD800s. From what my research tells me, imaging and soundstage are highly rated on these HP'S. I might be chasing something that doesn't exist. but there's a good chance I strike gold also.

K340 stock ( green team )

Wow! thanks very much for your kindness....

Yes please tell me all there is to know about your headphone journey, i will listen to you to learn about possible contenders comparison then.... Good news....

I wish to you the best year possible and to all people here....

 

[Davidzak64]

Wow! thanks very much for your kindness....

Yes please tell me all there is to know about your headphone journey, i will listen to you to learn about possible contenders comparison then.... Good news....

I wish to you the best year possible and to all people here....

I would have private messaged you, but I can't. Do you own the HE400? If so, have you experimented with grill removal or mods? My 400i with grill mod seems to be the closest soundstage and imaging to the K340 that I've encountered.
They are not quite as detailed and timbre correct as the 340. But the placement of the instruments is very similar. I enjoy them a lot.

 

[richard51]

I would have private messaged you, but I can't. Do you own the HE400? If so, have you experimented with grill removal or mods? My 400i with grill mod seems to be the closest soundstage and imaging to the K340,
They are not quite as deatailed and timbre correct as the 340. But the placement of the instruments is very similar. I enjoy them a lot.

Yes i did the grill mods with my Hifiman He 400 and i did more, i improved them with my vibrations controls inside and outside....I did that because i did not like them right out of the box, anyway i was never in love with any headphones ....

But they never reach at all the 3-d holography of the K340 nor his more natural timbre experience...My hifiman HE 400 can rival the K701 yes but they were never a match, the Hifiman nor the K701, to the K340 at all.... In timbre accuracy and naturalness as in 3-d holography, no match or comparison at all for me.... The K701 and the Hifiman are nearer to the worst headphones than they are to the K340 for me.... The K340 is on another level simply....

The problem is not the placement of instruments which was very good with the Hifiman, as with some of my other headphones like my beyerdynamic DT 990 , it was the lack of this 3-d volume holography in many case "out of the head" impression filling my room, my eyes open to see the musicians location in the room... And for timbre naturalness it is the same, the k340 cannot be touched by my other headphone save perhaps by the Stax SR-5 gold timbre naturalness but no 3-d holography outside the head or at least around the head here at all with this legendary Stax.... The cause is evident: there is no acoustic tools like 5 passive resonators inside the Stax gold shells cups ....Then there is a good timbre experience with this Stax way better than with the unnatural Hifiman or the K701 but there is no holography.... The Fostex vintage planar T10 was also good with timbre naturalness but with no holography either and other problems of his own plague it anyway , it was really only a planar driver in an empty small shell with a microphonic cable i never replaced....

For me the soundfield has 3 parts: imaging + distributed 3-d volumes holography+ soundstage...
In my journey only the K340 render this soundfield 3 parts accurately....

Before my speakers/room acoustic experiments and before the K340, i had no idea about this 3-d holography.... As for most people i described the soundfield of my speakers/room or of my headphones with 2 categories only : the imaging and the soundstage....

Most reviewers did not know this either anyway if i read their review they never spoke about it .... Like many people they plug the speakers in their living room and write a review .... But optimizing speakers with acoustical mechanical control of their room working is the only way to transform and put speakers on their true potential S.Q. level ... I learned this, no reviewers teach me that....

Reviewers sell products, they dont work much to optimize their workings... They change their components each week anyway or almost....But there is no comparison between speakers in a living room and the same speakers in an acoustically dedicated room, no comparison at all.... But who could sell speakers saying that truth? Most people cannot afford and create their own acoustically dedicated room anyway...Then they dont even know what their speakers can do in the right acoustical room for them ... For sure nobody had interest selling speakers and say that they need a "room" too....

By the way paying an acoustician to design a dedicated room will cost 100,000 bucks... I learn how to do it myself to some minimal level for sure but enough to be astounded by the results after my retirement.... This is why i know what is 3-d holography, or a soundfield filling all the listener room and around him and even with the same intimacy than with headphones... Why do you think i never love any headphones especially after my speakers/room successful works ? Because they all missed, if not timbre naturalness rendering itself, they miss 3-d holography completely , they lack realistic sound experience... Headphone never compared to speakers/room well done...The K340 is for me the only exception i know of that can give me an acceptable acoustic experience....Like i said the reason is simple, AKG engineers think with acoustic mechanical control using Helmholtz method to help the ears/brain accomodated itself with the shell /room/cups tools in place for decoding and computing sounds .... You can make the same thing in your room too and AKG engineers were acousticians too for sure And they know that a shell cup is a room not only an empty box but a potential acoustic tool ........

 

[richard51]

Here is an article, short but well written, i just pick it on the web about "imaging"....

https://www.audiodiscourse.com/2021/08/what-is-imaging-in-audio-and-thoughts.html

Just to illustrate the difficulty to explain this audio concept, which cannot be explained without a deep understanding of acoustic and psycho-acoustic...

The writer here confuse soundstage and soundfield...He claim that "soundstage is a derivative of imaging"....But this is not so simple...This article illustrate the difficulty about this acoustic matter....

For me.... soundfield: imaging+holography+soundstage

Then soundstaging and imaging, and holographing, are each one derivative of the integrative soundfield which is not a state but a process in working ....

And this integrative soundfield does not result and come to be by the magic of frequencies response of the transducer ONLY but like speakers in a room, the integrative soundfield experience come from the timing of waves direct and reflected one, crossing the different pressure zones of the room or of the shell, for each one of our ears whose brain compute the right delayed information content to recreate localization and virtual sound sources presence.... If we put for example many Helmholtz resonators around speakers in a room, at specific location, we will change the soundfield, by modifying the pressure zones distribution in the room.... The transducer of the speakers or of the headphone then play ONLY a role, they cannot play ALL the acoustic part of the imaging show so to speak as say the writer of the article... If he was right, the AKG engineers would never had been in the obligation to add, to the dynamic and electret drivers, 5 resonators/diffusers diaphragms in the shell chamber to improve imaging and holography and soundstage.... Acoustic phenomena in a room or in a shell cannot be explained by the transducers properties only...




For me imaging is the perception of distance and direction between virtual sound sources in a common plane or a common surface....But soundstage is the encompassing volume or STATIC potential 3-d space of the soundfield itself ....Then the holography of each sound virtual source events is the PERCEIVED fluctuating volumes of sound oscillating in the room or in the head, your brain creating them and projecting and superposing them on your room real space .......The brain use the TIME and TIMING delays of the waves for each one of our ears crossing the room or crossing the shells , the brain also compute the way the waves behave in the different pressure zones of the room or of the shell for each ears.....

The soundstage is a static volume with "measurable" apparent dimensions at the instant T, the soundfield is a multiple dynamic distributed oscillating set of volumes of correlated virtual perceived sound sources interacting together and interpenetrating one another in a confuse or clearer mode and the soundfield is completely created by the brain not by the transducers "magical" properties only or by a mere trick but also by all the acoustic conditions and properties of the acoustic content of the room/shell .....Laws are not tricks....

By the way all that come from my experiments and experience and i am not an acoustician at all.....Feel free to correct me if it is the case....

 

[richard51]

Here very interesting Japanese audiophile article describing the K340...

https://vaiopocket-seesaa-net.trans...tr_sl=ja&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc


Here an interesting comparison with the TOTL Grado:

https://vaiopocket-seesaa-net.trans...tl=en&_x_tr_hl=en&_x_tr_pto=sc&_x_tr_sch=http

 

[richard51]

My experience with the K340 now is such that i can understand and describe why so many reviewers claimed without being even wrong that the K340 own an innate discrepency between a too slow bass frequencies range and a way too speedy higher range in relation to the bass range....

I do not feel that at all but i perfectly understand in what way this is right to say it this way at first : as a perceived discrepency or an alleged defect.....

The reason is that most people had experience with a singular membrane headphone only , planar, dynamic or electro-acoustic one.... Then they are used to very artificially boost speedy bass range when listening TOTL headphone or even lower cost products and they are also used to way slower high range speed expression , in particular if they owned non electroacoustic membrane headphone........

Being used to an "artificial" bass range very speedy dynamic and to a slower higher range, they perceived and analysed the qualities of the K340 as a defect, which exhibit the opposite of what they experienced with all other headphones , but this alleged defect is not a real defect at all.... There is no discrepency at all here for me, only a more realistic soundfield experience at the end...By the way the bass expression of the K340 is the deepest i ever experienced with any headphone, extension is good and dynamic too....

For sure my post analysis dont take into account possible REAL discrepency induced by a defectuous K340 or a non optimized K340....

But if the K340 work as intended by AKG there is no rupture betweeen the spectrum parts and articulation , it is the opposite, the K340 reveal, in spite of his own limitations on all acoustic counts as any design trade-off in audio, the K340 is able to reveal the ARTIFICIAL acoustic limitation related to EACH non-hybrid singular membrane, planar, dynamic or electroacoustic, used in shell/cups/room which most of the times are used without any acoustic shell controls; like some speakers throwed in a living room, then in a space devoid of any controls and proper acoustic response in relation to speakers drivers limitations and possibilities....

There is inside the shell/cup/room of the K340 an acoustic complex chamber created by the 5 Helmholtz resonators passive mechanical control , like my hundred of resonators were acoustical mechanical control around my room....These acoustic devices help to integrate the bass and high range in an acoustic 3-d image which do not exist with most other headphones if not for all, i dont know that for sure because i did not listen to all headphones....

The truth is for me that the K340 bass and high relations are more "natural" in their expression of timbre and their expression of the acoustic recording conditions than with any other headphone i know, and his unique holographic adaptative translating capabilities proves it....

Then is there a discrepency between bass and high frequencies range with the K340 ?

Yes and no, the impressions of each of us are based on some habit related to the headphone usage itself when the singular drivers of most of them anyway pre-determine, because of our habit with them, our own way to describe which is a "natural" sound experience and which is not , and which is an "artificial" sound experience and which is not....

It is clear after 40 years that many headphones beat the K340 on at least one of many acoustic factors taking and analysed in isolation , some other headphones could have a better bass expression, others could have a better high frequency expression, other will exhibit a more vivid dynamic, other will reveal more detailed transients, other could be more detailed and more transparent, etc....For sure....

But none will express all these factors without their own defects and their own trade-off limitations and especially, no headphone i know about exhibit a 3-d holography with so much good points on all other acoustic counts taken together even if the K340 dont score 10/10 about each one of these factors taken one by one and analysed in isolation ; anyway his score at the end is more than good....

And with his "magic" holographical power, which is perhaps unique we have an explanation of his cultist status after 40 years of audio improvements..... It seems this old technology is not necessarily devoid of any possible future promises, even if they seems dead now on all known design desk, but anyway this technology does not seem obsolete at all to me.... On the opposite side most of the other non hybrid headphones, with empty shell and vibrating shell, which are also non acoustically controlled at all, these are obsolete for me....

Acoustic is not about taste.....

I forgot to say that with the K340 the mids frequencies dont steal the show as it is the case with many other headphones , with the K340 the timbre, not the mids frequencies accentuation, and his acoustic 3-d holographic seat steal the show ....The mids of the K340 are more natural and realistic than beautiful, so beautiful they are...The K340 strives to be NEUTRAL, in the sense that they exhibit no frequencies tuning toward bass or highs or mids accentuation but a general neutral mode with perhaps two flavors, bass light and bass oriented, because each one of his 2 drivers has his specialty.....

 

[richard51]

Some people reading my posts, coming from outside this very small K340 owners club especially, can think for sure that i exagerated or anyway they will claim that i lack experience with high end headphones, it is not false that i had no experience with multi-thousand dollars headphones....It is not true however that i exagerete....

Why? Because many K340 owners like me feel so lucky to own them and be spared the frustration to be deceived by marketing bulshit about many others so called upgrading possible headphones on the market, compared to a true audiophile experience.... This true audiophile experience, most people using low cost speakers in a non dedicated room or using sub-par headphones ( most of them ) will never live through it anyway nor even imagine it possible....

In my corner sitting near the Sansui and the K340 on my head listening anything i feel happy without limits nor frustration....

There exist in audio a minimal treshold of S.Q. satisfaction and an optimal threshold too , passing over them and upgrading will cost tremendous amount of money and work ( creating an acoustic dedicated room for example ) Upgrades now appear if not useless way too costly for me when i listen music, because i feel no more that the small limitations of my actual audio system are anything that can bother me at all because i enjoy this minimal S.Q. treshold and more.... Thanks to the AKG engineers of the past.....

By the way this minimal treshold of S.Q. satisfaction can be determined objectively and not only subjectively, because acoustic science is not reducible to personal tastes....And many characteristics of listening experience are relatively well known, or well known enough to make us able for example to create an acoustic SMALL room dedicated to specific speakers and even dedicated to some specific pair of ears....I know because i did it .... We can do the same with the necessary engineering skills to replicate this same science when designing cup/shells of headphone the same way as we can do for a small room.... Acoustic is an art based science like medecine is.....And audio is way more than only collective technology for the mass market , it ask for artistic dedication too from the engineers and for sure big amount of money sometimes to be invested in the product research and time duration to create it ....

Sansui and AKG were for 50 years no more too much small company at some moment in history , because they were able to monopolize big ressources in their search for excellence, and not too much big company either at the time too, because too big company lost creativity and focus on mass market not in audiophile niche so much....It was so the end of an era when Sansui and AKG were sold to bigger Chinese huge companies... They lost their impetus and became an empty shell to brand nemerous new mass market products which are all the same under many names basically .... No more first works of art creators....It become clear if we study their audio history....

The difficult part for a consumer when he is confronted to a possible product to buy in the market is this: is this product has been created to be another "mass marketting" product among thousand similar one or a rare works of art..... Is this amplifier and headphone for example are works of art coming from engineers who wanted to express and exceed their own limits themselves or are only mass products created with only minimal standards quality and no innovative design only produced to make more money ? Or produced to satisfy only the lowest exigences of the anonymus crowd ?


I bought the AKG headphones and the Sansui amplifiers because at their source design there were engineers which were not businessman but artists first.... They created their products believing that they were the top products of their time and era, the pinnacle of audiophile experience.... I was right in these two case, they were top products so much so that they always are today near the top, if no more at the top, in spite of many new tech. progress.... For most of the many other products i bought in the past and regretted or dealed with them without enthusiasm, each time, it was a mass market hyped product created to make money nothing else ....I will not name them.... The only exception were three products created by single peopleS working alone and doing their best for sure but, a single people so much talented it was cannot beat small dedicated engineers groups working together as in Sansui and AKG case... Anyway one of these three products was more than good indeed, and it was a dac....Then sometimes one singular people can create a low cost marvel, in my case a dac....

Then read and study , as i did one time after years of deceptive experiences, read about audio history, to discover which are the motivation behind a product and you will learn how to buy without being frustrated like i was for years.... And you will spare money.... Think before buying.... Thinking is fun....Buying most of the times is not so much fun anyway....

 

[Krassi]

Think before buying.... and buy many k340 !!
i got 3 pairs and never reget it..

 

[richard51]

-----Covid19 and the AKG K340 experience :





I just catched covid (from a family encounter reunion) I feel better and out of trouble now this is the seventh days....

But it was not for me the only bad news few days ago ..

After few days without listening music, then my K340 cold on their shelves, i decided yesterday to try them anew...

Alas! Nothing of the magic was there no more..... On the spot i think, Goddam! My K340 drivers had failed !....A cold desesperate sensation engulf me .... Really.....

But i go on listening, to pass after the first shock, the necessary longer time i needed to rexperience not only the necessary "warming" period of 20 minutes but a bit more to acclimate my slightly congested brain and ears to the soundfield.... I was afraid because the usual 3-D soundfield holographic "out of the head" effect, which is related to many of my very well recorded files was no more there.... The soundefield STAY, if not inside my head, at best stay just around my head and no more in my room out of my head completely as it was the case with recordings i know very well and which make appear the piano in my room 100% in normal time...

After listening attentively i observed with some relief that the balance between highs frequencies and bass frequencies was there anyway ... The K340 drivers seems to worked well so far....Then why there is no more magic holography?

I paused a few minutes, and i realized that one of my ears for sure was 10% congested , not more, and this was enough to destroy the fine balance between left and right sound level balance, and frequencies perception balance between the 2 ears and make impossible for my brain to recreate the 3-d soundfield.... With some precise recordings the "out of the head" effect is 100% warranted because of the way the recording was made and i know which of my files can give it not at 50% but at a 100% efficiency level.....

I take an pause, close the audio system, a bit less anxious, understanding now that for sure the headphone is not broken, but so good it is, cannot replace my hearing balance....

This illustrate also the fact that with many recordings and with slightly wrong hearing balance, any potential reviewer could fail to recognize the superior acoustic rendering of the K340 over many headphones, if not over most headphones, just because one of the factors is missing : wrong pads, wrong amplification, wrong source dac, bad equalization or none, lack of vibration shells controls, plasctic grid obstruction, etc.... But more than that an almost imperceptible day to day unbalance flow of acoustic information in the hearing process between the 2 ears is enough to collapse the holography completely to my surprize.....

I am no more surprized at all by some negative reviews of the K340, there exist way to much factors necessaryb to put together to reach the optimal set of conditions to reach to the level of the acoustic experience they could deliver .....This marvellous headphone cannot work by itself alone at all.....It is NOT A PLUG AND PLAY component at all for me..... Sorry , you must enjoy a perfect hearing balance between your 2 ears to enjoy it...On top of all the others necessary demanding factors at play.... I discovered it at my own expanse....I will wait a bit to reacquaint myself with the k340 experience.... Today my hearing balance must be 5% less than 100% ....

Without music life is hard.....