I understand that you are a small company an I am trying to be patient. But from what I understand so is Cayin and Fiio for that matter. They have been offering replaygain on their DAP's for awhile. I would assume you would be aware of what features your competition is offering on their DAP's and do the same. I still have my M0 and I am enjoying it still and I am giving Shanling a chance to address these missing features. But having said that this experience will influence my decision on which DAP's to buy in the future and to whether or not I will keep my M0 if they aren't added. I also find the we are just a small company in China remark a little disappointing quite frankly. I would have preferred a response like, we are now aware of the desire for these features and will make sure to add them to future DAP's. That would have inspired me more to continue buying Shanling products.