So, the Objective2 headphone amp - designed entirely around the measurements? (PLEASE READ RULES BEFORE POSTING)

[Beefy]

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Here's a question for you though: how is the Mini^3 immune to clipping with a gain of 5, or even 3 with the same examples?  Math please.

Because the O2 will clip at the input stage regardless of volume setting. The Mini3 will only clip if the volume is turned way up.

 

[JamesMcProgger]

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Because the O2 will clip at the input stage regardless of volume setting. The Mini3 will only clip if the volume is turned way up.

how can you tell if the final design isnt even finish? ... or without trying one?

 

[n3rdling]

It's only been explained like 6 times

 

[kwkarth]

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Kevin ! 

Tongue tucked firmly in cheek, as they say....

 

 

[JamesMcProgger]

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It's only been explained like 6 times

mmm maybe it was deleted with the other comments 

 

[Shike]

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It's only been explained like 6 times

 
Ah, the location of the pot at the end rather than before at the signal input.  Still, we're only seeing a couple sources at best pop-up with enough voltage to even begin causing an issue.
 

 

[upstateguy]

 
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Tongue tucked firmly in cheek, as they say....

 

 
Yeah, me too...

 
 

 

[kwkarth]

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Yeah, me too...

Ahh..  

 
 

 

[fishski13]

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Ah, the location of the pot at the end rather than before at the signal input.  Still, we're only seeing a couple sources at best pop-up with enough voltage to even begin causing an issue.
 

 
your gain setting is limited though.  if using a bog standard 2Vrms source, you need to keep the gain at 3.1x or lower or risk clipping at the input.  as stated before, go above this gain, and the signal will be clipping at the input no matter where the pot is sitting.  if using a lower V source, you have more flexibility with the gain.  do you need a gain higher than 3.1x with a 2Vrms source for the K601 - probably not.
 
 

 
 

 

[deadlylover]

I wish I had read the last few pages of this thread before I wasted an hour of my life wondering if I ballsed up the Obj2. When it sees the full fury of my source, really nasty stuff starts happening, I'm running it from AC with a gain of 3(ish).
 
Sorry for no impressions guys, I didn't want to balls up my friend's LCD-2 (I was using the ibuds for testing =P).
 
All I can really add is that it's a pretty simple build, first timers should have no probs building this.

 

[fishski13]

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I wish I had read the last few pages of this thread before I wasted an hour of my life wondering if I ballsed up the Obj2. When it sees the full fury of my source, really nasty stuff starts happening, I'm running it from AC with a gain of 3(ish).
 
Sorry for no impressions guys, I didn't want to balls up my friend's LCD-2 (I was using the ibuds for testing =P).
 
All I can really add is that it's a pretty simple build, first timers should have no probs building this.

 
what is your source? 
 
 

 

[deadlylover]

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what is your source?

 
Audio-gd DAC19, I have no idea what it outputs.

 

[Shike]

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I wish I had read the last few pages of this thread before I wasted an hour of my life wondering if I ballsed up the Obj2. When it sees the full fury of my source, really nasty stuff starts happening, I'm running it from AC with a gain of 3(ish).
 
Sorry for no impressions guys, I didn't want to balls up my friend's LCD-2 (I was using the ibuds for testing =P).
 
All I can really add is that it's a pretty simple build, first timers should have no probs building this.

How did you build it exactly - I don't believe the PCB is available yet is it?  You could still have messed it up :\
 
EDIT:
 
Seems your DAC outputs 2.5V, lowering the gain to around 2-2.5x seems to be the best solution.
 

 

[deadlylover]

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How did you build it exactly - I don't believe the PCB is available yet is it?  You could still have messed it up :\

 
Point to point, I may or may not have ballsed it up.
 
But considering it works just fine as long as my volume control on foobar is low, I really don't think I ballsed it up =/.
 
Think I've got a dodgy 2068?

 

[Shike]

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Point to point, I may or may not have ballsed it up.
 
But considering it works just fine as long as my volume control on foobar is low, I really don't think I ballsed it up =/.
 
Think I've got a dodgy 2068?

See edit, seems like you may have pushed the gain too hard (your Audio-GD outputs 2.5V).