I bought this after someone posted a link on this thread:

http://www.amazon.co.uk/FIT-TOOLS-Al...1_TE_3p_ dp_1




As it's aluminium (not aluminum) it should stand up to the water content
of compressed air sources.

I doubt very much it will blow out a Power Amp on it's own, but I have
plenty other uses for an air duster I don't have to keep buying in can form,
and it might just mean I don't have to always cart a big heavy amp to my
local garage to use their mighty airline, as much fun as it is.



Gareth.