Hi, I am looking for a portable DAC/Amp with around 1W power output at 32 ohms, at a budget of max $300. I have been looking for a bit, but haven't found one yet. I have been spending a lot of time travelling and wanted something really trasportable that could replace a desktop amp satisfactorily. I am mostly looking at battery powered units which can easily be charged from laptop USB. Note: The only one I could find was iFi Micro BL, but that is $600.