Simple mixer for use with Captor X

[jubal81]

So I've got a Two Notes Captor X on the way and it doesn't have an aux input, which is a bit of a bummer since I'd like to use it to play along with songs/backing tracks through headphones.

Drew this up hoping it will do the trick, but I'm wondering what other options might be, or if there's a better way to skin this cat.

[jubal81]

This TI headphone amp chip looks pretty simple. Looks like I could use it for the output opamps with 39.2r series resistors.

https://www.mouser.com/ProductDetail/Texas-Instruments/TPA6120A2DWPR?qs=ojKcPFmCWSXiGd7G5JhN2A%3D%3D

[marcelomd]

Hi
You don't need the buffers and can mix the inputs directly.
I guess an NE5532 can do everything with one stage per side, but maybe not, depending on your headphones.

[jubal81]

Good advice.

Here's the latest version using the TI headphone amp chip:

[jubal81]

Well, I'm getting sound out of it. I guess that's a start. Level is low and it's a rather extreme high-pass filter.