Hi, recording gurus! I'm a recording novice who just bought a Shure SR-57 microphone to record vocals and guitar, only to learn too late that the signal needs to be amplified in order for my Macbook Pro to pick it up on the line-in. Two obvious options (if I understand what I read here correctly) are: 1) buy a USB microphone that has a pre-amp inside and can go right to the line-in; 2) buy a separate pre-amp that takes input from the mike and sends Mac-readable output to the line-in on the computer. I think both of these would work, but at that point I've started to sink a lot of money into something that's just a hobby at the moment. (The store I bought the mike from offers only store credit for returns, and they don't sell any USB or powered mikes, so there's no way to flip the Shure into something I can use as is.) I had one other idea: I do have a guitar amp (Peavey Envoy 110), and I notice that on the back of the amp there's a 1/4 inch jack marked "Preamp out." So I was wondering -- if I run the mike cord from the Shure to the amp (via a mike XLR - to 1/4 inch converter, which I have) and then run a cord from the Preamp Out on the Peavey to the line-in on my MacBook (via a 1/4 inch to 1/8 inch converter, which I also have) will it work? Of course I could just try it, but having already gotten confused about this business once, I want to make sure no one says "Good god, sending a signal through a guitar amp will void your warranty / explode your soundcard / give you herpes" or whatever. One drawback of this plan is that, as far as I can see, it doesn't allow me to use the Shure to record the electric guitar. Is it safe / effective to plug the guitar into the amp and run a patch from the Preamp Out on the amp to the MacBook? Or does the guitar signal really need to be not just pre-amplified but amplified? Thanks for all help!