Just received my ST-Amp yesterday. I didn't have time to try the headphones output yet. But here is what can I say at this time:
- 3 little stands that makes the device very unbalanced. With a heavy home made power cable, the device just falls back... I had to take them off and put 4 stands of my own.
- Output power is excellent. But I regret there is no fixed volume mode
- Sound on analog outputs is amazing. It takes the sound transparency of EarMen but allows more fluid moves between the muscians and a less hard tone of voice I have on my Angel. It's halfway between the EarMen philosophy and the iFi one, with only the good sides: musicality (iFi), accuracy (EarMen), dynamics (EarMen), wide (iFi) and high (EarMen) soundstage. I really really love that.