Cromdubh, forget it. If you start briging an amplifier to traditional Irish sessions you are going to fuck them up. Sorry to be negative but as of now, how much Irish traditional music do you actually know? How much have you sat down and listened to at home for pleasure without wondering whether there is a place for you in it? If the answer is 'lots', then by all means give it a go. If the answer is 'not much but I know what I like' then you've got some homework to do. If you really want to do something useful with an electric bass in traditional music then get yourself into a dance band.