I was a little concerned when the chip used in the device wasn’t revealed. And the fact that they can be found on AliExpress, was also concerning. But plugging this beauty into my Andromeda Emerald Sea allayed those fears immediately. The synergy is practically perfect! The only thing better is my Mojo2. But that’s not nearly as portable. Seriously one of the best secret deals in audio. Balanced, tiny and discreet, it plugs into my iPhone flawlessly. Worth every penny spent.