Originally Posted by Cheap aeros
+1 for a good compressor. Definately get a dedicated airbrush compressor, if you haven't already, unless you don't mind earplugs
I have my old 12cfm chugger that I built up 25 years ago. It's way oversized so I have it geared right down, which makes it quiet. A decent sized inlet filter quiets themdown a lot too.
Regulators, filters, water traps etc are all stocks of my trade.