Distributor/buffer for 4 headphone amps ???

[ksor]

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]

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]

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 !