I'd guess the pad would help, as SBD level signals are usually hotter than mic levels. The V3 gain is clean, so why not play it safe?
Don't engage phantom power!
ahh, almost forgotthe phanton thing, thankfully, i ALWAYS dis-engage it after each show:)
its just a pain to get my v3 out of its cage, tomake a quick adjustmentlikethat, but whatever, i'lldo it
i just hate to engage the -20db pad and then get there and want to run my mics