2. amps-preamps
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Why do some amps provide more output power when using a balanced connection?

I have an Audio Research LS 25 mk I which has a higher gain when using the balanced inputs and outputs. I just acquired a Schiit Jotunheim headphone amp that has a higher output with balanced as well.

 The increases are not at all insignificant.  The ARC preamp goes from 12db of gain with single ended up to 18db when using balanced.  The Schiit Headphone amplifier goes from 800mw to 3000mw ( with a 50 ohm load) when moving from single ended to balanced.

 Can someone explain why this takes place? 

marktomaras

Showing 4 responses by gdhal

gdhal's avatar
gdhal
1,641 posts
 
I'll leave the answer to your question to those better suited to answer it than I, however, I can tell you that 6 db difference between SE and XLR is *not* insignificant. 
gdhal's avatar
gdhal
1,641 posts
 
gdhal, did you misread Mark's post? He described the difference between 12dB and 18dB as "not at all insignificant", same as you.

@bdp24  (and OP)

Yes, I did misread the OPs post. Please accept my sincere apology. 
gdhal's avatar
gdhal
1,641 posts
 
.... and not only does Al possess a vast subject matter knowledge, but his ability to articulate his knowledge, resourcefulness in finding other relevant information (including schematics) on the Internet and overall kind demeanor is exemplary.

I think if there were a "most valuable Audiogoner" award, it should be presented to @almarg
gdhal's avatar
gdhal
1,641 posts
 
Just a FWIW: this response really doesn’t make sense! So I can understand there being some confusion.

And, unfortunately, that is a common theme where Schiit customer service and technical support are concerned.
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