DIY Headphone amp, Thanks PRR, buffer question

[theoverstayer]

I built the headphone amp for my 32 ohm headphones PRR suggested. It sounds amazing. My question now is how to buffer it so I can split my main outputs to this amp and my speakers.

THanks, JEff

 

[PRR]

> split my main outputs

Of what?

If it is a common hi-fi control preamp, just use a Y-cable.

 

[theoverstayer]

I am monitoring from a digidesign 192 io sending to the headphone amp as well as dynaudio bm15a's. I just want to make sure I am not creating some load issues to my output that are detrimental.

Thanks, JEff

 

[Samuel Groner]

You may split the output passively several times (say 5x) without seriously loading your 192.

Samuel

 

[theoverstayer]

My other concern was unbalancing the signal for the headphone amp. If I connect lo to ground to unbalance doesn't that tie it for both sets of outs from the Y? Isn't that unbalancing the whole connection?

THanks, JEff

 

[Samuel Groner]

Isn't that unbalancing the whole connection?

Yes. Connect low through a resistor which is equal to the input impedance of your headphone amp to ground, this well keep balance nicely.

Samuel

 

[geetar_king]

I built the headphone amp for my 32 ohm headphones PRR suggested. It sounds amazing. My question now is how to buffer it so I can split my main outputs to this amp and my speakers.

THanks, JEff

I know know this topic is old, but can you point me to this schematic you speak of?  I'm looking to do a headphone amp for my 32 ohm headphones.  I did some searching but found a bunch of different topics.

Thanks

 

[3nity]

+2 here too!
Id like to see that schematic!
Thanks.

 

[pyjaman]

Hi, I think the keyword here is Tori Amp.
(meta...)

Laurent.

 

[geetar_king]

Thank you!

Found schematic here:
http://www.groupdiy.com/index.php?topic=4295.20