Does this look like it will work to connect to the Audio In (Left) pin on the Seed? The goal is to allow for both instrument level and line level inputs to process in a roughly equivalent manner once they hit the Daisy Seed.
The instrument input circuit handles the impedance issues of a guitar input, boosts the signal, and then passes on to the line in circuit via a switched jack when line in is not plugged in. The line level input circuit amplifies the signal and then attenuates with a pot wired as a voltage divider. Finally, diode limiting is used to protect the daisy from overload and also to avoid the possibility of very harsh sounding digital clipping on the inputs.
Power will be supplied via charge pump at -12VDC and +12VDC.
Many thanks in advance for any help!