Only removed one to take photos. Never used in factory boxes from authorized deal with full two year warranty.
These are amazingly good sounding for computer audio, can take USB input directly from computer or with wireless Audioengine $99 W1. Or you can plug your iPhone or iPod directly in and get continuous recharging through the USB input. Or use RCA cables and plug in a CD, DVD player, etc. I use a pair on either side of my TV and the sound is as dynamic and even better quality as any movie theater! Volume control on back. There are many imitators but for hundreds less these are substantially better than a wave radio-and much fore functional. Paypal 3 %. HighValueAV.com Mike