Re: Auto-switching analog sources?

I use a mixmaster 10 for this purpose - you can take a look at www.midiman.net

http://www.midiman.net/midiman/html/products/mixers.htm

As you've already read, a mixer doesn't "switch" the inputs, it mixes them - they are always hot - the upside is being able to mix in other sources, such as voice synthesis. This model is nice due to the size & separate gain controls for each channel.