i'm interested in getting NFB-28 (old model) and have a few questions: - can it be used as usb dac with mac os? - will i hear any background noise with low ohm armature iems? (i have some with mytek 192, that's why i'm worrying) - will it be upgrade after ibasso dx100 (i love sound profile of...

can dx150 be used as usb DAC for OS X? can't find this information

Had anyone a chance to compare v8 and AM6 (ambient acoustics)?

Is it true that westone 4 have the same sound as westone 40? I read topic here where people said that westone 40 is more expensive that westone 4 because they have additional cable. I got opinion of another people at anther resources that westone 40 is better so i don't know where is the...