Headphone amp

[Arthur Harrison]

http://www.national.com/krkDir/parametric_table/0,1817,799-c2-1,00.html
has a table of National Semiconductor's audio amplifier offerings.  Most of
these parts are designed for low voltage, and are in microscopic packages.

In some cases, a dual op-amp such as the National LM833N or Phillips NE5532N
is adequate as a stereo headphone driver, if you don't require very high
volumes.
They're compatible with +/-15v supplies, and easy to apply.

For high-loudness applications, I've used the Apex PA26 dual power amp in a
SIP
package to drive low-Z headphones with good results.
See:  http://www.theriver.com/apexmicrotech/pdf/power_op_amps/pa212526.pdf

BTW, I recommend building in at least two output jacks, preferably with
independent
volume and balance controls.  That makes it easy to share your sounds with
friends.

-Art

-----Original Message-----
From: Mark Havard-Brown <mark at spooky-solutions.co.uk>
To: Synth-DIY <synth-diy at mailhost.bpa.nl>
Date: Saturday, December 26, 1998 5:56 AM
Subject: Headphone amp


>All,
>
>Does anyone have a stereo headphone module circuit?
>
>I'd like to put one into the modular and not have to keep powering up the
>mixing desk and amp every time I won't to "tweek".
>
>
>
>Mark.
>
>