DO NOT BUY FROM THEM AS THEY DON'T UNDERSTAND SIMPLE REQUESTS! I ordered n 8 channel mixer and before it was shipped, asked if I could pay more and upgrade. They responded saying yes, we will ship your item. Not what I wanted or asked. So, they shipped it and didn't respond to my request. When it arrived, I asked why they didn't get back to me, it's not open, can I upgrade? So.. they referred it to the TECH department who said send YouTube of issues!!!! Idiot response. I kept telling them NOT a technical issue..why didn't they let me upgrade BEFIRE they shipped the item. Again..we referred your problem to our technician's. Obviously, they don't have enough high level English speakers on board (I teach English as a Second Language and estimate very basic skills in their department). When they don't understand, they ignore you or just give you off. Unless you speak Chinese, I doubt you will get resolution if ANY problems. BIG NO from me.