I own Tekfusion Twinwoofers M edition(with mic) for the past 4 months.You need to burn-in the headset using the player provided in Tekfusion website. I suggest wait for atleast 1 month before you listen with it. I got it for 1900 bucks and is a bang for the bucks.Nice punchy bass good highs and lows, mids are ok. overall well tuned headset for the price. And need to mention the goodies comes with it. A hardcase and a jellybag and 5 pairs of earplugs. I'd recommend them anyday.Sennheiser is very bad for listening bass heavy songs.Just not my choice