jtam,
It has a digital pot not analog one.
1. I wonder if this makes the Mini-i any cleaner?
2. With the headphone ON, the Mini-i functions as a pre-amp.
3. In this mode, is the digital pot better in a sense of connecting to a outboard headphone amp that does not have a pot? (Similar to a speaker power amp).
If I build a headphone amp without a pot, would it not be "cleaner" to use the Mini-i as a pre-amp?