Hey guys, question about a mixer board. I'm currently using a Tascam dp-02 portastudio. I'm wanting to use an external mixer ( I don't use a computer so I figured a mixer over interface). I'm wanting something with 4-8 inputs being guitar and mic. The reason is is live recording, and drum micing. The 2 inputs on the Tascam are just not cutting it (though this portastudio is fantastic in every other way). My question is do I need a non powered, or powered mixer? I was told powered was for live PA mixing. And non powered was for powering boards and recording via tape deck etc... Is this true? Thanks!