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Schiit Magni Headphone Amplifier - Page 38

post #556 of 1688
12/29/12 at 4:49am

So i got my he-400's a few days ago, sound great. Also ordered the M&M stack, how will the affect the sound anyways? I'm talking about M&M stack vs. No amp/dac

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post #557 of 1688
12/29/12 at 5:53am
Quote:
Originally Posted by DarthUnnamed View Post

So i got my he-400's a few days ago, sound great. Also ordered the M&M stack, how will the affect the sound anyways? I'm talking about M&M stack vs. No amp/dac

Not to be rude, DarthUnnamed, but I think you have asked this question at least once previously in this thread and/or others.  There have been several impressions of the M&M with the 400's posted if you search for them. You can read all the impressions you want, but in the end the only real way to know the difference will be to plug in your he-400's and give them a good listen when your M&M get there.  Be patient and enjoy!

 

beerchug.gif

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post #558 of 1688
12/29/12 at 6:31am
Quote:
Originally Posted by pelli View Post

Not to be rude, DarthUnnamed, but I think you have asked this question at least once previously in this thread and/or others.  There have been several impressions of the M&M with the 400's posted if you search for them. You can read all the impressions you want, but in the end the only real way to know the difference will be to plug in your he-400's and give them a good listen when your M&M get there.  Be patient and enjoy!

 

beerchug.gif

I know, i'm asking for a comparison actually, not just impressions

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post #559 of 1688
12/29/12 at 7:01am

Does anyone know the input sensitivity / max. input voltage?

 

The specs say 130 mW into 600 ohms and gain of 5x, so about 1.8 V on the input. The modi outputs a bit less: 1.5 V.

 

So is it safe to run this from a hot >2 Vrms source?

 

Is there any info from schiit if the gain can be lowered? And is the output impedance constant across 20 - 20 kHz?


Edited by xnor - 12/29/12 at 7:03am
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post #560 of 1688
12/29/12 at 10:10am
Quote:

Originally Posted by xnor View Post

 

So is it safe to run this from a hot >2 Vrms source?

 

Is there any info from schiit if the gain can be lowered? And is the output impedance constant across 20 - 20 kHz?

 

There is probably no separate gain and buffer stage like in the O2 (I mean the entire amplifier circuit of a channel has a global feedback loop, with a gain of 5), so the volume control is most likely at the input, and a high input voltage does not cause clipping.

 

 

Regarding the output impedance, the output is apparently DC coupled, and I do not see any obvious output inductors either, so there is probably no output impedance variation with frequency for those reasons. There could be increasing output impedance with frequency due to decreasing open loop gain, but I think this is a "low feedback" design with high open loop bandwidth but relatively low gain that only starts to decrease above the audio range.


Edited by stv014 - 12/29/12 at 10:27am
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post #561 of 1688
12/29/12 at 11:09am

You think it's a single stage topology? Aww... it would have been too perfect otherwise.

 

Still wondering if the gain can be changed by switching some resistors and if lowering it would make the amp unstable.

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post #562 of 1688
12/29/12 at 12:06pm

Does anyone know of a viable alternative 220V 'wall-wart' to power this? 

 

I thought with enough people owning one now we could at least figure out the power supply type...

If I could find a 3rd party one online I'd still buy the US only version and just switch the adapter once received, unless we can get an ETA on the expectation of a worldwide alternative Magni (and the cost?)

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post #563 of 1688
12/29/12 at 12:16pm
Quote:
Originally Posted by Han Bao Quan View Post


I've been saying that for quite sometime now. People like to associate burn in with almost everything, as if miracle happens.

 

Yeah I used to have a Maverick tube DAC and amp and neither improved with burn-in.

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post #564 of 1688
12/29/12 at 12:23pm
Quote:
Originally Posted by BLACKENEDPLAGUE View Post

 

Yeah I used to have a Maverick tube DAC and amp and neither improved with burn-in.

I still lean closer to the theory that if burn-in made a noticable difference (i.e., if it actually existed) there would be cases of people preferring the sound of a certain piece of equipment before it burned in, rather than the burn in always creating a better sound. You never hear of anyone liking the way something sounded before it was supposedly burned in. So, I don't really believe in burn-in.

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post #565 of 1688
12/29/12 at 12:58pm

The same with high quality lossy vs. lossless. But that is a different thread altogether

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post #566 of 1688
12/29/12 at 1:19pm
Quote:
Originally Posted by BLACKENEDPLAGUE View Post

The same with high quality lossy vs. lossless. But that is a different thread altogether

I definitely can A/B the difference there. Not in detail or noticeable artifacts, but in terms of dynamic range and depth. Lossless is more three-dimensional sounding, and most of the time it's easy to spot if you have good enough headphones. I can't A/B it on cheap headphones, though.

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post #567 of 1688
12/29/12 at 6:29pm

Finished listening to this beast after several hours. It is so much smoother than the e7/e9 combo. It has better clarity, separation and transparency. While I've only tested this with my Q's...I might have to dust off my K172 and maybe see if i can safely plug in my SE215.

 

I'm listening to the Chesky album from Amber Rubarth in 24/96Hz. (great album btw....the guitar and drums just wash over you...)

 

 

I think this set up (Modi + Magni) has enough juice to drive my Q's to their potential. They sound much clearer, the sound is more natural.

 

So far that all I got. I'm hoping to upgrade to some new phones soon because I want a more balanced phone.

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post #568 of 1688
12/30/12 at 8:35pm
Quote:
Originally Posted by TMRaven View Post

I don't buy into the asgard and bifrost 'murdering' the magni/modi.  In the world of amps and dacs, nothing murders anything.  These aren't headphones.  Jason's using a little bit of hyperbole to help you along your choice to spend more money.  Notice how he didn't put 'asgard murders magni' in the magni description page?  Because if he did it'd be bad marketing.

Exactly... all marketing. I doubt there are actually any audible differences between them. At the most, one may be more "noisy" than the other with very sensitive IEMs. 

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post #569 of 1688
12/30/12 at 9:44pm
Quote:
Originally Posted by Lord Voldemort View Post

Quote:
Originally Posted by TMRaven View Post

I don't buy into the asgard and bifrost 'murdering' the magni/modi.  In the world of amps and dacs, nothing murders anything.  These aren't headphones.  Jason's using a little bit of hyperbole to help you along your choice to spend more money.  Notice how he didn't put 'asgard murders magni' in the magni description page?  Because if he did it'd be bad marketing.

 I doubt there are actually any audible differences between them.

rolleyes.gif  Sure.

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post #570 of 1688
12/31/12 at 4:52am
Quote:
Originally Posted by wolfetan44 View Post

rolleyes.gif  Sure.

Is it that hard to believe? Or rather, is it that hard to accept?  blink.gif

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