I've been using the Fiio E7 with my Android phone for some time now and I'm happy with the sound. However I'm looking to reduce the bulk of my setup so I'm in the market for a small DAC/amp to replace the E7. I've been looking at the Dragonfly from Audioquest as well as the Fulla from Schiit. I would appreciate any comments on these DACs (specifically using them with an android phone in a portable setup) as well as any other recommendations. Not sure if it makes a difference but I will mainly be using the DAC/amp with the A12 from 1964 Ears when it arrives in a few weeks and occasionally with the HE-500 from Hifiman. Thanks in advance.