Mini-A as a headphone amp? Anyone?

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Hi,

I like to build a Mini-A which I want to put a little back on the bias perhaps to about 0.5A as a headphone amp for my Sennheiser 580 headphones (300 ohm). I have a pair of kristijan Aleph 4 boards lying around which I like to use to build the Mini-A. I do not see any problems using these boards as a basis of the Mini-A.

Did anybody use a Mini-A as a headphone amp? How are the results with which headphone? Did you change anything on the design?

Thanks,

Edwin
 
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