Analog/Digital (custom) switch

[DWBH]

So I need some sort of gizmo that allows me to switch between two signal paths or both of them at them same time:
- normal channel of my amp, vibrato channel, or both of them.



I based this off of a GEOFEX article (http://www.geofex.com/article_folders/cd4053/cd4053.htm).
Used a 4053 for the multiplexer (I'm only using 2 out of 3 switches), a 4013 for the flip flop and a 4001 for the NOR gates.
The first FF-D changes between activating A/deactivating B on the mux, and vice versa.
Now, I wanted to be able to have both switches activated (A and B both on/closed) so I used the remaining FF-D and some NOR gates to switch between normal funcioning (when Q on the 2nd FF is low) or both switches on (when Q on the 2nd FF is high).

Any tips on how to improve this, or any other ways to do this?

Both inputs on the mux will be tied together, as I want to split the input signal.

I'm having doubts on how to bias the output signal. I'll be connecting output A to a buffered pedalboard, so I assume I won't need any caps on the output of A.
On the other hand, output B will be connecting straight into the amp. Should I put a cap, as illustrated in the GEO article? What value?

Thanks in advance.

[Processaurus]

Can you explain the goal of your switcher more?  It's hard to look through your schematic not being sure.  Is it just a 5053 based  A/B/Y switch?

[DWBH]

Yes, it is an ABY switcher.
Input A and input B will be tied together so the input signal splits into two outputs. Switch A commutes between output A and ground - same for switch B.
One FF controls whether output A or B is active and the other forces both of the outputs to be active.

[slacker]

The logic part does what you want it to do. Personally I would build the CD4053 part how R.G has done it, and add a buffer in front and possibly buffers on the outputs as well.

[DWBH]

add a buffer in front and possibly buffers on the outputs as well.

Thanks, that's the only part I wasn't sure how to do.