Your rig: laptop, ipod, iphone
Type of usage: music, movie
Format: mp3, mp4
Genre: bass, pop, rock, ballad and acoustic
Type of headphone: on ear headphones
Budget: RM300-RM350
Other requirement: preferably with volume amd track controls (though not necessary)

Really no idea to get what. Seems like step up from FA-003 to Beyer COP  not really worth it.

You can try Sennheiser PX-100II and AKG K420. Both have the signature and functionality you are looking at.
Technically in term of price comparison, it is not really an upgrade.
However if you look at another way, do you like the signature of COP? Is the bass adjustable feature attracts you? What is the lacking part of FA003, is it the bass that you can compensate from COP?

I love your answer. Helping me in dilemma. Hehe... I just love the sound, sound good to my ear. But that time during testing, it's different setup so it's unfair to compare directly to my FA-003. My FA-003 serve me well, and the bass good enough for me so I don't expect super bass. Maybe I should get amp or better DAC, amp or DAC cum amp? Tested Yulong U100, really improve the performance. But thinking of testing DACport and see how far the sound will go.

I guess, I won't be getting COP for now because I might not satisfied and then spend more for another headphone. Been thinking DT 880 Pro with DACPort Jaben combo. But it's open. Well, can't judge until test the headphone right? Maybe the T 70 P? But they need to be amped right? I'm looking for something portable, foldable.

t70P = portable, low driving demand
T70 = demanding piece of artwork

I tested T 70 P.  Lovely... Any on this level for other headphone? What do you mean demanding? BTW, if I drive T 70 P with amp, I wonder if it's the same quality with T 70 amped? Lower impedance known for issue for maxing the volume. But again, who will max the volume.

something little more "fun" will be the open back shure 1840

oh and also the HiFiMaN he400 and above models

Hifiman HE400 look reasonable. But Shure 1840, the price.

i also wish for a HE-400, tested before and reviewed

What headphone you compared with before?

I have been searching too since I got into this hobby, unfortunately found none. If you like the KSC-75, I am afraid you may not like warmer headphone, probably you want something with much bigger sound stage and better instrument separation while maintaining exactly similar signature. Don't get me wrong, IMO there are many better headphones out there with higher price tag of course, but in the end I keep coming back to my KSC-75, its just me I guess. It's a special phone indeed but still miles away from being the best, very fun to listen to, and to me, the vocals are perfectly positioned and I don't find the treble offensive at all as claimed by others. I have no issue with Grado brightness, so I have no problem whatsoever listening to KSC-75 for hours. To be honest, within your budget, you can already go for high end or even flagship headphone. I would suggest you to try and demo Beyer T1 (over your budget, its priced above RM3k). I don't think you can go wrong with that, but there is no guarantee you're going to love it either

Other recommendations:

1. Goldring DR150 (strongly recommended by HeadFi folks)
2. Alessandro MS1i, Alessandro MS2i - had this but I didn't enjoy it as much as I do with my KSC-75, weird right?

Demo them first. Cheers.

Hey guys , I'm currently using the Beyerdynamics XP3 . What's a good option for an upgrade to the XP3 overall within the RM300+/- budget , or if topup RM50-RM100 can get something more worth it I'll probably go with it , thanks

Hey guys , I'm currently using the Beyerdynamics XP3 . What's a good option for an upgrade to the XP3 overall within the RM300+/- budget , or if topup RM50-RM100 can get something more worth it I'll probably go with it , thanks

Reference S4?

Hey guys , I'm currently using the Beyerdynamics XP3 . What's a good option for an upgrade to the XP3 overall within the RM300+/- budget , or if topup RM50-RM100 can get something more worth it I'll probably go with it , thanks

LCD-3 and COP

Where's the link for review?

i only made them separately, not in one review thread

So, is it obvious upgrade from COP? I mean HE-400...