I have a Spectral DMC 10 preamp that has been in storage for almost 20 years. It was hardly burned in when it went into storage. I intend on using it as part of a base-line system I am building. I spoke to Spectral's technical support today. I was told that it would probably be okay to hook it up to the external power supply it comes with and plug it into the wall but it would be better to wake it up slowly with a variac.
I remember making a poor man's variac 30 some years ago in tech school using various wattage light bulbs but I would rather use a variac . . . one problem though they are very expensive and I would only be using it this one time.
Any ideas on gettin a cheeper variac or know of place that may rent them out?