AKG k242 hd good headphone about isolation and bass response or i have to chise an other...like sennheiser 280 pro?
Not quite sure what your asking?! If your headphone is closed back then it will typically have a decent bass response. If your asking if the AKG 242 have good bass response, well i'm not sure. I would recommend Denon AHD2000 ($180 used) or Grado SR80 ($99 new) or Grado SR225 ($150 used, $199 new). Those three headphones don't need a amp, but will of course benefit from one. Like the Fiio E9, O2, etc.
The AKG K242HD has decent bass response, but if your looking for a "full" bass, then might want to look else were.
The AKG K242HD's are semi-open, In general I do like the sound of my K242HDs.
thanks, yes i´m searching for back-closed headphone but tu connect for mobile, so i conect an 38 ohms headphones to a mobile or mp3??
they sound great but they dont have many isolation,