Peats stock a range of phones. Tower records in suffolk street too and Cloney audio out in Blackrock sell sennheiser.
Realistically though, to get decent prices you are looking at ebay or the web and getting them shipped in.
I think I saw some Shures in Tower and they had Goldring IEMs too, but I was shocked at the price of the shures, so they must have been dear!
What were you thinking of?
Fran - outside Naas, 25 miles from Dublin!