Wonder why the K242 HD was never popular in the USA? Always saw it sold on amazon for ridiculous prices. Sometimes as high as $300.
People kept claiming it used the same driver as the cheaper K240 Studio. Probably does, but the graphs are way different.
BTW the Beyer DT-880 pads fit on the AKG K240 Studio. Both Pleather and velour. DON'T steal them from your Beyer headphones because it stretches them out and ruins them!
Where did you see these graphs on the K240HD?