In the May 2003 Home Recording magazine there is an article about how to upgrade an ADK A51 into a tube mic. You can buy a complete kit ($500) including the mic or they sell upgrade kits ($300) if you already own the mic. Here's a link to a tease on the article:
http://www.homerecordingmag.com/feature2.aspHere's the company's, um, modest website:
http://mojaveaudio.com/index.htmlThey make a separate power supply out of an old ammo box-- kind of cool. The article also says that the company used to use Marshall's but changed to ADK's, so the mod might work for Marshall's as well.
Anyone heard of this yet? The author was very impressed, saying it sounds like a cross between a U-67 and and M-49, but since I've never heard either of those it really doesn't help me a lot.
take care,
Drew F.