Next fortnight I thought that, since I've only got one decent mic, a Focusrite Scarlett CM25 condenser mic, I would finally get around to ordering an Aurycle DIY Tube mic, here's the link to the web page:
There is one downside, it looks like the pre-built power supply has been designed to run on the US 120 V AC mains power system, so, I will need a 240V AC to 120V AC stepdown transformer to power it properly, I think I might be able to get one from my local Jaycar Electronics shop though.