[Harp-L] harmonica microphone cables - impedance matching

[John Kapetan <kapetanj4696@xxxxxxxxxxx>]

Hi all, 

How much of a 'sin' is it to plug in a Shure blues blaster mic to a Music Man tube amp without using an impedance matching transformer (I realize it wouldn't really be considered a sin as much as it could possibly be considered poor practice). :-) 

Thanks, 

John Kapetan