I would advise against altering magnet system. You will end up having to alter other things & possibly damage diaphragm in process. Planar magnets are very strong. Neodymium magnet normally have a nickel like coating on them but a not so well healed manufacturer could have left them uncoated in which case the could look like ceramic magnets. These magnets if left uncoated will deteriorate over time as Neodymium is sensitive to exposure to atmosphere though it may take years for it to become a problem. There are many different strengths of Neodymium magnets as well strongest being I believe n52. Some Neodymium magnets are not much stronger than sammarium cobalt which is still stronger than ceramic or alnico magnets.

Also separating the diaphragm from front housing to get at front magnets if present can cause diaphragm to be torn if glue is overly strong. There is usually screws holding it together but also a small amount of glue that may have got on diaphragm face that needs to be separated to get to front magnets. If you make magnet polarity mistake on assembly or allow magnet poles to shift even slightly on reassembly the magnet system can go from full repell to full attract causing the magnets to slam into each other damaging the diaphragm in between.

Magnets have to be setup to repell when assembled. All North poles facing each other as well as south poles doing the same if there is magnets front & back of diaphragm. As you look at the side of magnet facing the diaphragm the poles facing the diaphragm go in a north-south-north configuation though bear in mind some manufactueres face the poles to the side instead of facing diaphragm. A method of alignment is needed to prevent shifting as magnet assembly is being pressed together. It is nearly impossible to do by hand as the difference of having magnets repell or slamm together is only the gap between the magnets on either side. 1/8" side shift is all it takes to have magnets slamming into each other.

It's going to change the magnetic field.
This is - theoretically - predictable of course. Electrodynamics is a well understood field. But some of the parameters will be tricky to find out in your situation (magnetic remanence, for example).

> what would that do to the performance of the cans?

Any number of things could happen, but the most likely outcome is that it's not going to "better" in any quantifiable measure.

It applies EQ to all audio, so you can stream whatever you want. When you have it downloaded, you just need to click the "AutoEQ" button, then search for your headphones, and thats it.

Download equalizer apo and use the preset created by oratory. It’s wonderful.

I wish I was home because I would simply send you the text directly but I don’t have access to my computer at the moment

Thanks for the reply! How should I go about EQing and what should I look out for, in regards to these headphones at least?

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Thanks. I will try it out on my laptop. Is that with streaming Tidal?

Koss KPH30i, Grado G pads

The 600 are a very laid back pair of headphones. They won’t really do too much in the way of blowing you away immedistely, but instead what they will do is after you’ve had a long 9 hour day and you realize you were still wearing headphones, and you realize that nothing was harsh sounding, and you’ve simply been in audio bliss the whole day, that’s what they do beautifully.

That being said, while they’re super easy to listen to stock, they benefit a lot from eq. With eq you can lift the veil and bring in some bass and subjectively improve the soundstage quite a lot. They are great headphones that last a long time and are tuned very nicely but they certainly wouldn’t be considered fun headphones. But if you eq them they’re damn near perfect to my ears with a great balance of fun and natural sound. Which is something I can’t say about a lot of headphones. In fact they’re one of the only pairs that I can listen to that sound both natural and very detailed when eqing.

I can’t really recommend them if you don’t eq though even though stock tuning is great. They do truly have a veil and lack of bass out of the box. improve

i agree, this sub seems to glorify the hd600/hd650/hd800 as if it were the second coming of christ

I recently got the 7Hz Salnotes Zero myself. I had been using KZ-ZSN Pro X before that. I immediately thought the Zero was too bright though it was slightly better in many other aspects from the ZSN Pro X. It kind of grew on me and has become my primary unit when I go on my walks, etc.

But the comfort? Ugh. I have large ears and it still hurts my ears unless I insert it at a specific angle and pull my earlobe down while doing it. My glasses pushing down on the wire or any cap touching the wire, or god-forbid, pushing the earpiece even slightly so causes it to hurt. I have mastered the art of inserting it so it doesn't hurt but man, if I am in a hurry, my ear gets sore quickly! Makes me wonder if I am doing something wrong...

Thank you dude

I didn't like harman target on the 660S as well for the same reason as you, felt like it ruined vocals. I'm using Amirm's eq (only 3 bands) and like it a lot, it keeps the intimate vocals and gives a needed bass boost. https://www.audiosciencereview.com/forum/index.php?threads/sennheiser-hd660s-review-headphone.34755/

Dongles and amps don’t change sound signatures (save for tube amps)

Try switching ears & see if problem move to other ear or not. If problem sound moves it is your earphones. If not have your ears checked. I had a crackling in my right ear & the crackling sound did not move with suspected driver but stayed with my right ear. Some months later I had sudden hearing loss in my right ear. Then distortion got really bad on that side after hearing loss. I still have hearing loss in that ear but much of the distortion has left. Most sound above 5KHz is severely reduced & gone by 9KHz altogether on that ear. I did recover some hearing in that ear as right after hearing loss I had nothing above 2KHz. Before hearing loss I could hear up to 15 KHz.

Get both and switch

Anyway, enjoy your new headphones. :)

Even your topping a30 will drive it just fine

If youre listening over your computer, i would recommend installing Equalizer APO and Peace (for Equalizer APO). I thought my 660s sounded great, until i used the Auto EQ, which made a huge difference in clarity.

Hifiman edition xs

That looks like one of those tiny pick ups with massive offroad tires hahahahha

Are the 109 Pros a natural progression from the hd600?

I've just tried the EQ on USB audio Pro player and it makes a huge difference thanks :) just a shame it doesn't work with Amazon Music :( may have to swap over to tidal once the free account runs out

I'm new, what is the name of the headphones? And the pads? Ty

Well, I'm not sure. I have not tried the 3.5 jack and went straight to balanced cable. And I only follow what their specs says. I have not seen others do a measurement test on it. But based on the specs it will power 1.8v only if you switch to high gain mode. On low gain you will only get 0.9v.