I bought "professional" studio style headphones (Fostex T50RP) whose cable ends with a big male end about 3 cm long and maybe 1/2 cm wide. The DAC/AMP accepts a smaller male connector, the kind that would be on the end of your earbuds. How can I connect them? Should I accept the fact that I am a fool and send back my professional headphones, or can I connect them somehow? Is there another cable I could use? and where would I find one? I need it yesterday for school.