Thank you DTKZ for your reply. I would definitely keep them as there is 30 days refund period and meanwhile try others as you mentioned.

Hello everyone,   This is my first post in this forum :-). I bought a TDK ST-800 high fidelity headphones at futureshop(Canada) for 149$ in Canada day's sale. Sound quality is all about bass, if I want a good hi frequency, I should turn it's equalizer on. price for Audio Technica M50 is 179$...