Where to buy a good quality wall wart

Jameco.com is another one

Not much difference in them,shop for value.

If you want to go high end you might try the Russ Andrews site in the UK. They've just made a replacement wall wart for Cambridge DAC Magic that's amazing.

http://www.russandrews.com/category.asp?lookup=1®ion=UK¤cy=GBP&customer_id=PAA0402047710917FQRUDXZKVLUJCODS&cat_id=PMAINPOWESUP

I got a "Little Pinkie" power supply for my V-DAC, they make ones for other Musical Fidelity units as well. Big improvement, cost around $200. Located in Scotland, don't have address off the top of my head, make it for US voltage on request. You would have to hear it to believe how good it sounds.

Here is the address: http://www.rock-grotto.co.uk/pinkiepsu.htm