Luckily you are not using using HD660 or HD330. If you are using them you have to fork out more money to buy the pad and headband which cost more to replace with beyerdynamic replacement products.

Next week will be better. Not this weekend. Anyway what model will be available for testing?

Funny thing i really dont like tweaking with eq because im more of a person who prefer doing it in the analogue stage. (cable, dac, amp)
It's a good choice going to the superlux. I love them too. Besides my jh16pro, i find this has the most universal sound.

Of course I'm not in anyway against digital alteration/EQ. Just that I prefer to change it through analogue side because there is more changes than just a simple eq in the sound.

May I ask the bass distortion you are referring is the distortion used in making a distorted bass sound or it is your headphone producing distortion because of certain problem. If it is the the headphone you are referring to, adding a dac might be able to help out in cleaning out the distortion from onboard sound but adding an amp will help refine it even further.

For me the best way is to start with headphone then amp then last dac and the cycle continues again. This is because I follow the biggest changes in the setup in which headphone give the biggest change then amp and lastly dac which gives the smallest changes among them. Of course cable is just something that is extra to help you fine tune your system or getting the best potential out of your system and is not supposed to be used to upgrade your sound.

The new designs does looks better. But I still prefer to use the rugged plastic on their HD668B and HD660 model. They do look ugly but at least they can last a life time. (If you don't abuse it) Hopefully they will share the same plastic but repainted to give it a smoother looks.

Which model you are refering to? I can say they are very good.

Most likely the best model is hd660 if based on reviews. It is a closed type.