ASR measured the output impedance of the UDA-1 at 332 ohms, while the power output @ 32 ohms is quoted at 55ma in the specs
Ah wasn't able to find it of the UDA-1 itself when I last checked, but sounds about right on the output impedance and power rating on lower impedance headphones. Does some strange things to headphones, sometimes very pleasant depending on the headphone. I keep the amp around because it sounds unique. Just finding the T1.3 pairs better with it than expected, vocal intelligibility and imaging is exceptional on the T1.3 with it for instance.
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