You don't say how you are connecting to the Eclipse. One thing to note – the relay bypass only operates on the XLR inputs.
You will have to use Dsp bypass for the guitar input, which may give a teensy bit of coloration, depending on your guitar.
If you are currently going in to the 1/4" inputs, you should use the XLR instead. This will need a balanced to unbalanced cable or a DI box.
