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FiiO Mont Blanc/E12 portable headphone amp, 880mW, slim design, full metal case. Bass boost and Cross feed! - Page 242

post #3616 of 3623
Quote:
Originally Posted by Dobrescu George View Post
 

It is better to not use while charging. 

 

It is better to charge before first usage.

 

It is better to use a safe power supply.

 

 

 

 

Thanks for the feedback, I'm considering using this with the original cable for charging, seems optimal? If the text in the pic is too small, it says "5.25 V, 2.1A" output .

 

post #3617 of 3623

I think that it was limited to 5V, and 5.25 could burn the charging circuit. 

 

You should power from laptop or computer USB port, if not sure. 

post #3618 of 3623
Quote:
Originally Posted by Dobrescu George View Post
 

I think that it was limited to 5V, and 5.25 could burn the charging circuit. 

 

You should power from laptop or computer USB port, if not sure. 

Yeah, I am using my computer at this time. I have another adapter for my mobile that is 5.0V and 1500mA, maybe should use that one instead.

post #3619 of 3623
Quote:
Originally Posted by Feelthebeat View Post
 

Yeah, I am using my computer at this time. I have another adapter for my mobile that is 5.0V and 1500mA, maybe should use that one instead.

To play safe, yes. I am using a 1000ma and 5.0V phone charger, and it works good.

post #3620 of 3623
Wow it has good spec.. Also design looks good!
post #3621 of 3623
Does anyone have any idea how the crossfeed circuit changes the frequency response? I like having the option to use with Spotify or any other time I'm not using Neutron Music Player with its built-in crossfeed, but the E12's crossfeed seriously kills the high frequencies. I was thinking about getting a Fiio X5ii and balancing out the crossfeed FR with the equalizer, but right now I think Neutron on my old iTouch is the way to go, even if its DAC is not the highest quality. I just don't understand why these "audiophile" music players lack the sound adjustability that consumer-oriented players have.
post #3622 of 3623
Crossfeed overlaps the signal slightly from the right and left channels. Good for older tracks that have hard panning to one side, like many songs from The Beatles for example. It usually sounds very odd to hear an instrument or a voice on just one side so the crossfeed helps with this. If you don't need it for this application then leave it off as crossfeed will flatten the imaging on most regular stereo music that has better channel balance.
post #3623 of 3623
I'm familiar with the basic concepts of crossfeed, personally I leave it on all the time as it doesn't mess with the FR too much with the moderate settings I use (650 hz lowpass, -6 to -7 db crossfeed level depending on the headphones I use). These settings are for Neutron and foobar2000, which share a similar crossfeed implementation, if not the same. With the E12, the crossfeed seems more extreme, like the lowpass is set at a higher frequency and the crossfeed level is set closer to 0 db. It's really a shame, as a more subtle (adjustable if possible) crossfeed on the E12 and parametric EQ on the X3/X5 would be enough to make the E12/X series an endgame portable rig for me.
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