Glad to hear that you're both enjoying the Bifrost. I am also considering getting the bifrost for use when traveling for work. Only issue is it doesn't do dual voltage (only as issue during international travel granted). Thinking of a chord Hugo or the iFi micro iDsd instead because of that.
Look at the site I think they have different voltage for each region like US/Asia/Europe etc., Most of the DACs available in the market are universal voltage.