I have HD440. Only about 30 hours in. It has improved since coming out of the box. But I feel the driver is still very stiff and tight. I think she needs more burn hours to open up better. I will try to give in 300-500 hours to get the best out of it.

Once done, I'd be happy to put this up for demo in a gathering, or do a loan-swap since I am curious to try other models.

Better still, if anyone is keen to contribute by giving a thorough review of HD440, I'd be happy to borrow it.

I am also considering to mod it by adding sponge inside the earpads - hopefully can improve comfort wear. Did anyone try something like this before? Would be great to have a reference before i do it myself

This post has been edited by ertai: Apr 4 2012, 09:57 PM

Tissue? I think I will try felt cloth instead. Add some color to the sides

Ok i shall try tissue first then see how

I dont think DAC will improve bass response

thanks, im still learning to appreciate tight and clean bass, i understand that it sounds more accurate

I see. Thanks for the tip

it just died while using? It is driver or cable faulty?

Superlux HD440 Mod:
I had some time over the weekend and did a very simple 'aesthetic' mod on it that I would like to share

Material used:
1) 2 pieces of red felt cloth (bought from Art Friend, MV Gardens @ RM1.2/pc)

you can choose any color you like, depending on your model HD330/HD660

2) Facial cotton (24 pieces) is FREE I 'stole' it from my sister XD (JK)

3) Ruler, Pencil, Compass to measure diameter and draw a circle, and scissors (no pic)
4) Small screwdriver, flat (-) shape

Basically, all I did was remove the black sponge that come with it and replaced with a red felt cloth.

The black sponge

and earpads

Remove the plastic ring that secures the black sponge (lever it out with the screwdriver)

How it looks inside

I did the necessary measurements using my tools and cut out a small donut-shaped felt

and a round shaped felt

secure it back with the plastic ring

there you go


Note: The aesthetic mod did not really change the sound even though I used felt cloth. The difference is probably too small to notice anything. But it definitely looks better, matching the red Superlux HD440 label

OK. Now going pass the looks, the following will change the sound quite a bit..

This is where I added the facial cottons inside the earpads. I used 3pc and fold it into half (you will need 3pcx 4 = 12pc for each earcup), total 24 pieces

and sealed it with the spare felt cloth that I had, folded into half as well

Final product:


After listening with it, I noticed a few things:


Anyways, I am undecided whether to keep the cotton mod permanently or not. To my ears there are certainly pros and cons there.

Update: 17 Apr 2012
I reduced from 3pcs of facial cotton to 2 pcs each fold. 8pcs for each earpad.
On reinterpreting the sound:


This post has been edited by ertai: Apr 17 2012, 07:06 PM

Just updated my views on the mod and sound. Check it out. Post#2514