I have added some SPL Premium Mic Pre's to my mic pre arsenal RackPack 8: Sound Performance Lab. Other than sounding truly wonderful, they have two line outs that could be used for a variety of things including parallel tracking (note: I believe this option is only available on the 500 series model). I originally saw this extra line out ideal for a backup to a second recorder (mobile tracking for example). But since then, I have added a few LA2A's and 1176's to my arsenal and now see huge advantage tracking with those going in. So... Normally I would track clean and do any processing ITB or DA hybrid but there is no substitute to tracking with analog gear like this going in and also at the mixing stage. This extra line out just became an interesting option. Once things tame down around here I'm going to experiment with this more. Any idea's on how you would use these in a parallel tracking process? Good idea, Yes, No? I'm thinking I could process track 1 > Mic> SPL Premium> Line out 1> 1176> LA2A> AD and keep line out 2 clean to the AD and experiment with some parallel processing this way.