The On1 is a great headphone, so if it's an improvement then Thinksound continues to grow in the right direction. Nice review Ds!

Thanks ericp. I can honestly say the ON2 has the best overall street SQ for anything I own portable wise. I will do some comparisons to some of my other favorites but for now I would definitely grab the ON2 on the go. I have not heard the ON1 but from what Aaron has told me the SQ should have improved due to higher QC and more precise manufacturing.   He told me he is always looking to improve on what he has made.