[sdiy] my first schematic - please critique

[Byron G. Jacquot]

>with some help i've designed my first schematic and i'm looking for
>critiques on what could be done better.  please keep in mind that
>simplicity is key and i just want it to work right.  this is designed to
>accept two stereo inputs, mix the two allowing crossfade, and amplify
>the output.  please let me know what you think.
>
>http://www.sub-version.net/images/crossfading_headphone_amp.gif

Is the cap on the wiper of the crossfader a little small?  It might be a little bass-light with .001uf there.

Not that it's a design flaw, but keep in mind that it inverts the signals it's passing.  This can cause no end of confusion in some situations, but for a simple headphone amp, it's not fatal.

You might experiment with other values of crossfader, as well.  It's being loaded by the 10K resistor, and at the center either signal is something like 12 dB below where it is at the end.  You might find that it's a little touchy to adjust.  A lower value will be more immune to the loading.  Are you after any particular gain structure through this circuit? (IE: when faded to one side, the output should be +/- how much, or when centered, one side should drop by how much?)

Byron Jacquot