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-   -   Distributor/buffer for 4 headphone amps ??? (http://www.diyaudio.com/forums/headphone-systems/211126-distributor-buffer-4-headphone-amps.html)

ksor 19th April 2012 06:02 PM

Distributor/buffer for 4 headphone amps ???
 
I have 4 headphone amps and need a distributor/buffer as an input module.

The source signal is a BALANCED LINE output - one for L and one for R (stereo)

I have found this Figur 4 page 6:

http://www.ti.com/lit/ds/symlink/ina105.pdf

But I need no gain and wonder if this princip schematic could be implemented with ordinairy op.amps. - the special is these "internal" resistors - maybe it's overkilled.

How can this be inplemented ?

sgrossklass 25th April 2012 02:38 PM

What you need is basically a balanced line receiver like this. You can also use the fancier instrumentation amp circuit, preferably with 0.1% resistors where it counts.

ksor 26th April 2012 08:46 AM

Quote:

Originally Posted by sgrossklass (Post 3000375)
What you need is basically a balanced line receiver like this. You can also use the fancier instrumentation amp circuit, preferably with 0.1% resistors where it counts.

Thx for your reply - it look interesting !


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