With VDI, no battery inside, there is no sound at all.....pressing the model knob does not illuminate the LED, pressing the Alt Tuning knob does nothing.....no mags, no models nothing.
I just tried the battery, after charging it, plugged into 1/4 input. Pressing the Model know still does not illuminate the LED. Did not plug into amp dute to it being so late here.
I've never used the 1/4 input before. Always used with the VDI cable, no battery ever put in guitar.