I do not own this unit – I had this unit from @fnkcow   With Impedance of 320ohm this earbuds need a good amp to show its worth. I use my phone during my first listen to the zen and it sounds cold, sterile. Using the zen with my oppo HA2 or cayin N6 (which has monstrous power) reveals their real sound: good bass, forward sounding mids, smooth highs. With proper amplification the zen gives a wide soundstage and imaging, good instruments separation and layering. The shells looks to be a generic earbuds design, which doesn’t seem to be a good choice...

Disclaimer I do not own this unit – I had this unit for a few days as part of an Australasian tour. Thanks to @Brooko for providing his own unit for this tour.   Build Honestly I didn’t expect a $100 device to have this build quality. Solid aluminum with machined buttons, although the plastic scroll wheel feels cheap and detracts the overall value. 8.5/10   UI The UI is an okay to me, while some buttons seems redundant at times. For instance pressing the lower left/right buttons in folder browsing simply moves the cursor to one item over/under...