Audio Equipment & Burn-In

Muaaz

Wild Hunt
Jan 26, 2007
12,228
1
43
Dutchy of Touissant
This is a (gigantic/waddi saari/pretentious/wahiyaat) post mainly about the effects of burn-in (or breaking-in) in audio equipment.


DISCLAIMER & PREMISE: "I do not claim to have classically trained bat-like echo locating ears that pick up on the slightest changes in frequencies, pitch, or supernatural presence. I believe in the power of logic, combined with the human ability of sonic perception. The following is based on some years of noticing the effects of burn-in on various headphones, and most recently a pair of Klipsch RP-280F loudspeakers connected to a Denon AVR-X1200W receiver. As I am pretty much jaahil on the correct technical terms one can use to describe sound effects, I will use my own made-up slang and cross fingers that you get the essence of what I mean. I don't have the best ears in the world. If anything, I have some degree of ear damage all thanks to regular exposure to live music. But having been to live concerts, I have a benchmark to rate this reproduced music against. Finally I have primarily but not exclusively based my impressions on repeated listening of a lossless version of the following song: https://latenighttales.bandcamp.com/track/the-old-mans-back-again
The reason I picked this song was because I wanted to notice the extent subtle sounds and details in a ‘quiet’ song at moderate listening levels i.e. 40dB or 40% volume.

Let me begin by briefly (HA!) explaining burn-in, for those who don't know it. To the best of my knowledge: burn-in is a term regularly associated with the refinement and improvement of audio equipment (headphones, speakers, car audio etc) through usage overtime. Think of your audio hardware similar to aging wood on a guitar; a pair of shoes that become comfortable after some wear; a car-engine that performs better after the initial run-in period; the taste of rice from old-storage(okay, maybe that went too far); but most relevantly an electric coil that loosens up after breaking-in. Just like that last example, legend has it that the mini-and-micro audio components inside your epic headphones/speakers open up and settle down through continued usage over a regular period in time and space. But how long do I have to wait for my audio hardware to burn in? Good question, young one! A good rule of thumb states that the sonic improvements start to become audible after 200+ hours of listening.

However there are some unknown variables in this equation. First and foremost of which is that some people outright discard the idea of burn-in by labeling it as the placebo effect. The logical thing to do is kill these self-proclaimed audiophiles with fire...or just ignore them. Second, burn-in can be very obvious or very subtle based on audio equipment. Sound acoustics are affected by the materials and casings like wooden, plastic, metal etc. In the glorious interwebz forums and communities, some headphones e.g. JVC RX-700 are notorious for jumping on a whole new level of audio quality after burning-in. Third, burn-in won’t do jack if most of the source music you’re listening/pirating is of low quality. Fourth, your source hardware (e.g. Denon receiver in my particular case) plays a big role in how your audio hardware sounds. So don’t expect same sound out of a professional DAC/Amp and your iPhone (duh!). Okay, okay, I admit the third and fourth have little to do with burn-in. But hey, maybe you are slightly wiser after reading that bit.

Let’s (finally!) begin dissection of the burn-in journey of my aforementioned Klipsch RP-280F loudspeakers. At this point, they have easily broken-in 500+ hours (me having no life and all). Important to point out here is I don’t have a dedicated subwoofer set-up. Why? Honestly, because given my room size and dimensions I don’t need one. And maybe because I don’t want my neighbors to call the police on me (just walayat things :/). Maybe also because I can’t legally blow the clothes off the chikni gori next door. Anyways, enough bakwas... Focus Muaaz!

So right off the bat, the most noticeable burn-in difference I perceived was the bass response. Not only is the bass response much more accurate, I believe the lower frequencies are now more distinct, discernable and audible than before, ESPECIALLY on lower volumes when you can feel the slightest thump poking at your chest. But the overall bass response is much smoother, and less rigid than it was in the beginning. The best way I can describe is that each bass note feels like it has a top note, heart and a base note instead of just a peak/drop response. Overall, the bass just has a much larger, unveiled but very accurate presence in the room (similar to Abuses will lead to banalf when he gets angry at hobbits or dwarves).

Second most notable sonic improvement was in terms of imaging/soundstaging. The instruments feel much more distinctly audible than ever before. Even the instruments playing in only small effects are easily audible now (think of the cowbell in “Don’t Fear the Reaper”. Nah, just kidding!) Seriously though, even with my modest 2-channel setup the soundstage feels much wider than it was in the beginning. In my humble opinion, on some songs I can close my eyes and feel for a while like a live performance playing in front of me. BTW, I’m not talking about the ridiculously obvious sound imaging effect on tracks like beginning of Money/Pink Floyd. That imaging is evident even on my fazool in-ear headphones.

Third most audible improvement is what I call the ‘Depth of Field’ effect. Let me try to explain this by relating this to ASMR effect (Google it!). Let me try again by saying that the sound feels like you aren’t hearing it only through your ears; rather your whole head where different sounds are impacting different parts of your head, for example the drums hitting right between the eyes and the clap sound on “Soul Love/David Bowie” hitting you at the edge of each ear. Vocals, especially female sound singing at different pitch and intonation is again very audible. At the same time the sound of an intentionally over-played guitar strum for example in the beginning of “You/Nils Lofgren” oscillates all across your head. In orchestral performances, for example multiple violins playing same notes at the same time have their strong slightly echo-y presence. Again, it feels like the highs are striking your head at the edges, the mids are entirely playing inside your skull, the vocals are right in the center, whereas the lows thumping at your chest and back are tight, and punchy rather than loose and echo-y.

You could argue that I have been deaf to all these sounds and sound effects until now. If that is the case, refer back to the bit about killing with fire. Burn-in effect is not placebo, its real! I have noticed it with multiple headphones that I have owned over the years. Some people say that it’s only applicable to high-end equipment. Personally I disagree but then again, who am I to judge your gear. Personally, I think the single most important quality of headphones/speakers to possess is their ability to make you listen to more music. Fortunately, I am very satisfied with my speakers on this front.

If you have thoroughly read this post without speaking, congratulations and thanks for being tolerant to my views, jazbaat and bakwaas. I am very curious and looking forward to hear your thoughts on the subject.

Signing off,
Happy Listening!
 

Maajid

Extremist
Oct 19, 2007
226
3
24
Peshawar
Hello,

While I can't be as ornate and descriptive with my findings as yourself, I will try to contribute what is allowed by my limited interaction with 'breaking stuff in'
I purchased an inexpensive IEM a couple of months ago. KZ ED9(8.99$ via AEx). Which I mainly wanted to listen to audiobooks with.
But once received and put to test, the sound was too harsh/shrill for low-quality recordings and the S-sound/treb was piercing my brain via the ears. Naturally I took to some forums/headfi searching and the consensus was to use after-market premium tips to enhance or 'unleash' the sound of your XYZ IEM that one isn't satisfied with, as well as, use a collection of tracks to burn in the IEMs.
One such recommendation was(that I used on the KZs for 16~ hours)

Audio Burn-in Download | JLab Audio

And one other CD, called "XLO & Reference Recordings Test And Burn-In CD" (look it up on amazon).
After some trials, tribulations and around 16 hours of burn-in, the KZ ED9s have metamorphosed into acceptable sound quality for me. Not to diminish, that's saying a lot because I had given up on this purchase and had already thrown the pair into my drawer.
I still don't use them, and have them reserved for back up but knowing I didn't waste any money, thanks to the burn in/or the perceived credibility of the burn-in(what ever your stand is) and some perseverance on my part, is solace enough.

Any new users reading this experience should research the subject thoroughly before attempting to burn-in their audio devices.
There have been some reports and feedback concerning the degradation of sound after the break in period.
I have ordered the VSonic GR07 Classic Edition and wait in eager anticipation. Depending on the sound, I might put those through the wringer, as they say, as well.
 

AlienX

^_^
Jul 19, 2008
2,291
0
42
39
Islamabad
I have a pair of AKG K702 and a pair of Baredynamic DT990 Pro.

The AKG K702 is about 2.5 years old and probably has more than 1500 hours of songs/movies/games played through it. The sound signature is almost the same as I unboxed them. I did about 2-3 hours of idiotic pink/brown noise burn-in but ditched the idea and started to use them normally. The quality of sound largely depends on the source, DAC and Amplifier. With the inclusion of multiple devices, how can you isolate the change in sound quality to be the headphones ?

The DT990 Pro 250 Ohms are actually fun to listen to, never needed a burn-in (if it exists). They sound exactly the same as the first day and pretty awesome.

I think this idea of burn-in originated from old speakers sounding better over the years of use. Though I believe speakers from 70s and 80s were just made with better quality materials and in 90s we started to get cheap CD changer HiFi systems with plastic bodies while owners of old speakers started to believe the speakers have burned in.

Headphone transducers do not have much room to "improve". The change in sound quality is too small for one to notice a over time.
 

Muaaz

Wild Hunt
Jan 26, 2007
12,228
1
43
Dutchy of Touissant
[MENTION=4990]AlienX[/MENTION] Unless I'm mistaken you used to own a pair of JVC RX-700 headphones, correct? I vaguely recall discussing those headphones before making my own purchase. Didn't you also mention at the time that they benefit greatly from burn-in?
 

AlienX

^_^
Jul 19, 2008
2,291
0
42
39
Islamabad
[MENTION=4990]AlienX[/MENTION] Unless I'm mistaken you used to own a pair of JVC RX-700 headphones, correct? I vaguely recall discussing those headphones before making my own purchase. Didn't you also mention at the time that they benefit greatly from burn-in?
Yes I do remember. However over time my source also improved. Better audio cards, better amp. That was a placebo I guess.

There's a huge community which believes in burn-in. I didn't notice it personally with high end monitors.

Sent from my LG-D855 using Tapatalk
 

AlienX

^_^
Jul 19, 2008
2,291
0
42
39
Islamabad
[MENTION=68]Muaaz[/MENTION] where are you bro, long time no contact. I think last I met you was about 4 years ago.
 

Syed Razavi

Beginner
Jul 29, 2013
40
3
13
Karachi
Assalamoalaikum brothers,

allow me to share my little experience on burning in. i currently own Senn HD 598 for the last 6 months. i remember at first they sounded like a bit bright and their treble a bit thin (harsh sounding to my ears imho) but i kept on using them for music/ gaming/ movies for around 2 months daily for more than 10 hours :D (i was sick and at rest at home and i had nothing to do all day except music movies and dota :D) after some time its sound started to become more "fuller" and by that i mean

1) Bass had more body and "feel" to it (although they are not at all bass heavy and im not a basshead and i like to hear just the right amount of bass nd the 598 have it)
2) the Vocals and oh my! the vocals became so rich and "right into my face" kind of vocals :D it almost feels like the person is just infront of me
3) the treble became so much more relaxed and warmer and not too thin as it was before
4) the soundstage was already amazing but i think after using them for around 2 months it substantially improved with more "sound bouncing off the walls" feeling

overall in my opinion and humble experience, burn-in has a very pleasant effect on Mid to higher end headphones because of their resolution you are able to listen and identify more and more sounds in tracks you know and have been listening for long. cheaper headphones available in local market donot benefit much or to a negligible extent (like audionic, a4tech etc) to burn in.
 

Muaaz

Wild Hunt
Jan 26, 2007
12,228
1
43
Dutchy of Touissant
Yes I do remember. However over time my source also improved. Better audio cards, better amp. That was a placebo I guess.

There's a huge community which believes in burn-in. I didn't notice it personally with high end monitors.

Sent from my LG-D855 using Tapatalk
Not to argue with your conclusion, since burn-in is a highly subjective topic. Only thing I'd like to add is that I have tested burn-in always with a static source.

Couldn't agree with you more about the fact that source plays a pivotal role in driving the speakers or headphones, but I think burn-in has more to do with opening up the parts of audio equipment.

PS. I moved to Germany over 2 years ago. Haven't been to a PG meet-up in ages :)

[MENTION=93155]Syed Razavi[/MENTION] The manner in which you describe the changes is very well resonating and in-line with my own analysis. Therefore I can completely relate to your experiences. Personally speaking I haven't noticed soundstage improvement in headphones but that is probably also because I never owned open-back headphones to begin with. What source are you using to drive your Sennheiser's if I may ask?
 
Last edited:

DJ80

DJ'ing
May 3, 2009
276
4
23
Lahore
www.atkhan.com
I have a pair of AKG K702 and a pair of Baredynamic DT990 Pro.

The AKG K702 is about 2.5 years old and probably has more than 1500 hours of songs/movies/games played through it. The sound signature is almost the same as I unboxed them. I did about 2-3 hours of idiotic pink/brown noise burn-in but ditched the idea and started to use them normally. The quality of sound largely depends on the source, DAC and Amplifier. With the inclusion of multiple devices, how can you isolate the change in sound quality to be the headphones ?

The DT990 Pro 250 Ohms are actually fun to listen to, never needed a burn-in (if it exists). They sound exactly the same as the first day and pretty awesome.

I think this idea of burn-in originated from old speakers sounding better over the years of use. Though I believe speakers from 70s and 80s were just made with better quality materials and in 90s we started to get cheap CD changer HiFi systems with plastic bodies while owners of old speakers started to believe the speakers have burned in.

Headphone transducers do not have much room to "improve". The change in sound quality is too small for one to notice a over time.
It is indeed placebo. I second this notion. Burn-in maybe adds 5% improvement over time, and it's not even noticeable. There is one thing they never consider, which is depreciation. I believe in time depreciation balances out any burn-in factor too. At the end of the day, they're machines, and machines have wear and tear.

All my good stuff sounded good right out of the box, and I do keep arguing that on head-fi too. Indeed, good shit is nice out of the box. Maybe needs a few minutes or hours to adjust to the movement and operation, like a new car engine, and once your turn them on after several months. That's it. Stuff that is bad out of the box will remain bad forever. Burn-in isn't gonna do wonders or miracles. It's mostly just a fad, like people say that something sound terrible out of the box and later sounds like bliss after some 50 hours. That's a load of bull.

Listen to alienX.
 
Last edited:

AlienX

^_^
Jul 19, 2008
2,291
0
42
39
Islamabad
It is indeed placebo. I second this notion. Burn-in maybe adds 5% improvement over time, and it's not even noticeable. There is one thing they never consider, which is depreciation. I believe in time depreciation balances out any burn-in factor too. At the end of the day, they're machines, and machines have wear and tear.

All my good stuff sounded good right out of the box, and I do keep arguing that on head-fi too. Indeed, good shit is nice out of the box. Maybe needs a few minutes or hours to adjust to the movement and operation, like a new car engine, and once your turn them on after several months. That's it. Stuff that is bad out of the box will remain bad forever. Burn-in isn't gonna do wonders or miracles. It's mostly just a fad, like people say that something sound terrible out of the box and later sounds like bliss after some 50 hours. That's a load of bull.

Listen to alienX.
People on headfi are hard to argue with. Another great tip to improve sound quality is to get your ears cleaned :)
 

DJ80

DJ'ing
May 3, 2009
276
4
23
Lahore
www.atkhan.com
People on headfi are hard to argue with. Another great tip to improve sound quality is to get your ears cleaned :)
Hahahah yeah right. Ah man I don't wanna go full audiophile. Never go full audiophile. Then they'll bring in $3000 1M cables with some gemstones and sand and God knows what... Cables more expensive than complete rigs.
 

AlienX

^_^
Jul 19, 2008
2,291
0
42
39
Islamabad
Hahahah yeah right. Ah man I don't wanna go full audiophile. Never go full audiophile. Then they'll bring in $3000 1M cables with some gemstones and sand and God knows what... Cables more expensive than complete rigs.
I once saw a cable costing $15000 on Amazon. People claimed it generated it's own electricity.

Sent from my LG-D855 using Tapatalk
 

v9sp

Active member
Sep 29, 2013
263
17
23
Karachi
Burn in is a placebo....essentially, your ears "adjust" to the sound of the headphones and you enjoy it more.
 

DJ80

DJ'ing
May 3, 2009
276
4
23
Lahore
www.atkhan.com
Burn in is a placebo....essentially, your ears "adjust" to the sound of the headphones and you enjoy it more.
Yeah... and maybe the earpads and the frame adjust to your ears and head, and clamping force adjusts... and then some people think "OH MY GOD... THE HEADPHONES WENT FROM SHIT TO GOLD...!"
 
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