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
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.

I am not schooled in electronics. I have used a Cambridge DacMagic 200M into a McIntosh MHA200 tube headphone amp using balanced XLR connectors. The Chord Mojo 2, unlike the DacMagic, only has a headphone jack for output. I inquired of Chord whether it could be used as a DAC for a Decware Zen Taboo tube headphone amp, which has only XLR and RCA, and was told that I needed to attain a 3v output from the Mojo 2, which could be accomplished by pressing the volume button exactly 41 times. I assume that this would allow me to use a headphone plug to XLR or RCA adapter. Can someone please explain why I need to create a 3v output from the Chord Mojo 2? I assume it must have something to do with balanced v. unbalanced connections, but I really don't understand what they do. Thanks!

@therandyman ,

Unfortunately, Almarg is no longer with us. Though he is missed, at least by me.

 

Thankfully, Ralph (Atmasphere), is still alive and kicking, so if he doesn't chime in on this thread, you should PM him or call him (his number is on his website).

I, unfortunately, have no experience with your equipment and cannot comment.

(41 pushes of the Volume button?, really!)

Bob

Can someone please explain why I need to create a 3v output from the Chord Mojo 2?

@therandyman To get enough output to drive the amp.