Originally Posted by
liraop /img/forum/go_quote.gif
. . .would it be safe to use MBP headphone out as source for Magni ?
Yes, it would be absolutely safe. You can(and should) leave the volume up around 80% on your Mac Book Pro and use the Magni's volume control to reach your listening level. This will assure that you get maximum dynamic range. However, it will drain your battery faster. But in terms of safety, you won't be able to damage your headphones or ears as long as you keep the Magni's volume at normal levels.
Here is a Head-Fi thread where the subject is debated: http://www.head-fi.org/t/605183/high-volume-on-the-amp-and-low-volume-on-the-audio-player-or-vice-versa
Some people suggest that higher than 80% volume will overload the source and cause clipping. On the other hand, lower than 80% will cause the most quiet sounds and loudest sounds to come closer together(lower dynamic range.)
I have tested my Magni 2 Uber with a number of sources: Sony AV receivers, PCs, MP3 players, smart phones, etc. It works well with all of them, though receivers are slightly different as they output much more voltage. I usually keep my source volume at 100%, using Foobar2000 with WASAPI from my PCs. Fear not!
(The Magni has a relay that should protect you anyway.)
On a different note, I took my Magni 2 Uber in for some X-rays yesterday. Here is the result:
This thing is beautiful as Schiit! I'm glad I chose the Uber version, as a steel frame would have been a nightmare to get X-rays through.