To play FLACs on the go, I'm considering one of the following setups. 1. FLAC --> iPhone SE --> Dragonfly Black --> Shure SE535 2. FLAC --> iPhone SE --> FiiO i1 --> Shure SE535 Which one will sound better and be more comfortable? Is there an obvious weakness in either? I heard that the Dragonfly can be too powerful for the SE535.