I have purchased these earphones twice, unfortunately, the first order was defective, with the tuning filters lacking any of the foam, making them all sound similar. Still, even with those problems, the sound was much better than multiple offering from other companies at $100+. They broke within 4 months. I contacted the company to receive a replacement as per the warranty. I received it free of charge.This time around the performance was exemplary. The replacement was the correct V2 variant and came with all the parts in pristine condition. Each tuning filter had the foam, and did sound different from each other. My least liked was the silver bass filter, I have never been one for drowning out the mids and highs of audio. The black treble filter was my next liked, making the highs very clear, vocals sounded crisp, and string instruments benefited from them heavily. My personal favorite had to be the gold neutral filter. It is a reference filter, designed to give a balanced audio experience. They keep a great balance of sound overall, making every song you listen too very balanced, producing a strong bass, with crisp highs, and clear mids. The audio in these is magnificent, many have agreed that these frequently outshine far more expensive offerings, and I would have to agree.As for the negatives. The biggest offender had to be the cable itself. While being big and bulky is not a bad thing on its own,the amount is cable noise is outstanding, any movement is easily heard and will frequently interrupt listening sessions. On the plus side, they included a shirt clip, which is of surprising quality I must add. The last negative is not a complaint about the fit or function of the earphones at all, but rather the adjustment period. If you're like me, coming from any default apple earphones, then using these earphones will sound disgusting at first. The reason is that those earphones lack any good bass at all, then being exposed to amazing bass will make all the music seemed heavily drowned out and generally unenjoyable. Give it a week, and you'll be singing praises about the audio quality. And considering audiophiles love these earphones, you'll love it as well.