Other Resources:
Color decoding resistors
Vintage Microphones
Gyraf Tube Equipment

Components and spare parts:
El-Supply Components
Pyndt Shop

Webhotel without limits at Gigahost
Free Audio Schematics > Components



Here is also a list of  component suppliers who offer good service as well as good prices.


Components.: http://www.canford.co.uk
Good service. Cheap as well as expensive parts. Sifam, Lundahl and Pro Audio.

Componenter: http://www.farnell.com 
Everything in electronics, good service and good prises.

Components mv.: http://www.musikding.de

Components:  http://www.el-supply.dk
Most common stuff. Excellent service and very good prises.

Tubes.: http://www.pyndtshop.dk