Message back from zoom about clipping the inout of the B3:
[quote]
[i][font="Arial"][size="2"]Dear Dan,[/size][/font][/i]
[i][font="Arial"][size="2"]Thank you for your reply.[/size][/font][/i]
[i][font="Arial"][size="2"]We consulted to our engineer for the B3. The B3 can't fix with firmware about the input volume. It needs to improve the hardware for hardware limitation. Therefore, please connect the preamp or volume pedal before the G3 if possible.[/size][/font][/i]
[size=1][font=Arial,][size="2"]We hope you will understand the situation.[/size][/font][/size][color=#500050]
[font="Arial"][size="2"]Sincerely yours,[/size][/font]
[font="Arial"][size="2"]ZOOM CORPORATION[/size][/font]
[font="Arial"][size="2"]===================[/size][/font][/color]
[/quote]
So essentially, they suggest using a volume pedal or additional preamp to attenuate the input. Not ideal, but do-able. Even a simple passive volume pot in a box I reckon!