I am surprised at the run time per charge. I am getting over 16 hours. I have both the stock battery and two Anker batteries from Amazon. I have used Anker in my Samsung S4 as well and they are excellent, outlasting the Samsung battery, which surprised me. You can by two batteries and the charger for 27 dollars. which is cheaper than one Samsung battery. I am using the DX50 a lot by itself and into balanced amps and with all, I am thoroughly enjoying the organic musical sound. All genre play excellent for me through the ESW10 JPN, LCD2 (amped balanced), JH13 Pro and the Portapros (these are the phones I use most often but the HE-500 and HE6 also play and wound great with the amp system).
For IC and cable I am using a very special wire that is totally revealing, more than anything I have ever heard before, sadly and good, more so than even my ultra high purity silver, which has never been beat before. Great stuff all!