I have a chance to A/B testing these 2 for a week and honestly I will definitely vote to the Glacier.
Note: The UHA-6s is using OPA627AP
- DAC section Glacier by far better than UHA
- Amp section: Glacier has better treble extend, sparkle and decay. For the bass, I found out UHA-6s has more punchy and it makes me get tired easily, even I prefer more bass than normal. Glacier also has smoother mid and brings me more mood in every song.
- Battery Glacier > UHA (not really sure on this. I did not to the specific test on battery)
- Design Glacier > UHA (IMO)
How does the Glacier compare with your Fostex?