Just received mine after creating a missing shipment ticket with USPS due to the snafu with the shipper not including the second address line. Definitely hearing an improvement over my XB10, although battery life doesn't seem that much better. I charged the Ear Studio around 10 am this morning, and even though i haven't been playing music the entire time my battery 5 hours later mostly on the 2.5mm balanced connection (more on this later) is at 57%. I also saw the warning about disconnecting the cable while media is playing potentially damaging the equipment, and my cable was pulled out while in the middle of a phone conversation. It apparently caused the right channel on my 2.5mm balanced port to stop working. I've contacted Radsone for options, but it is disappointing (and a word of caution to other buyers) that something that could happen so easily could also so easily damage the unit. Fortunately the 3.5mm single ended output still works fine, although it doesn't sound as detailed. I'm also having trouble updating the firmware, and noticed some bugs with the app (namely the DSP filter option).