Ok, i am looking to record some guitar playing ( electric guitar, mainly hard rock and metal ) Currently i have a SM57 and i am mic'ing my guitar cab. ( tube amp ) I do have a digital modeler preamp ( GSP1101 ) but i prefer the tone of mic'ing a cab with a tube amp. I have the mic running into a cheap Behringer XENYX 802 mixer and then the mixer is going into my iMac ( 2010 i7 iMac ) and then outputting to my M-Audio monitors. Not sure if i connected something wrong but i can record 1 track fine, when i go to record a 2nd track ( for double tracking ) the 2nd track will record my playing PLUS the first track and gives it like a ghosting effect. I have to unplug the cable going from the OUTPUT on the iMac to the INPUT on the mixer and use headphones in order to eliminate this issue. anyways... I currently use Garageband and it seems to do ok. I would prefer to record 2 tracks and inputs at once, don't think garageband allows you to do that. ( would like to try 2 miss at once ) I was curious what can give me better sounding results? I hear some say a tube preamps for the mic? I don't have much knowledge in recording gear and did some reading on Google but still up in the air. A lot of people talk about the Apogee pre map, how well does it do for capturing rock and metal guitar though? Would i be better with a tube preamp though? Do i then plug the preamp into my iMac?or does the preamp go into a mixer? Do i use the line INs and OUTs on the iMac? or would a preamp with USB be better? I only need something that has 1 or 2 inputs at max, i only record my guitar and thats all, ( i drop backing tracks into garageband and record and play to that ) so i don't need anything that has 1,000 inputs. I just want something that sounds good for recording rock/metal guitar with a tube amp. I am not sure if i need a better quality mixer or eliminate the mixer and go with a mic preamp. Can anyone suggest some ideas? gear? thanks!