MrKazador
100+ Head-Fier
- Joined
- Jun 24, 2007
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The spec page is useless does not give any clue about the output voltage.
I'm guessing the D3 has fix output level which is greater than 1V. At 6.5x gain, O2 easily clips. That's why you have to turn down the volume control in Windows to avoid O2 from clipping. Not an ideal match to get the maximum power output from O2.
If other Fiio products is any indication I think the output voltage of D3 is 1.5V. Too much for O2 at 6.5X. Did you try it at 2.5X?
2.5x doesn't clip at all with full Windows volume which is why I'm using 6.5x to get the most that I can from the amp. I could adjust the gain but I don't really feel like it...