Distributor/buffer for 4 headphone amps ??? - diyAudio
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Old 19th April 2012, 05:02 PM   #1
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Default 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 ?
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Old 25th April 2012, 01:38 PM   #2
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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.
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Old 26th April 2012, 07:46 AM   #3
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Quote:
Originally Posted by sgrossklass View Post
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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