I'm an audio-noob, but I am trying to get into your wonderful world of portable audiophilicity. I have spent hours reading these forums, it's been exciting and overwhelming at the same time. I think I've decided on getting the sflo2 as my source paired with some grado rs-1's, as I have spotted a 2nd-hand for sale (2 years old, thus well-burnt, right?). Then of course I will be playing FLAC files. I'm hoping this will be a case of plugging the expensive "parts" together and getting an awesome sound. However, to get a good sound I will probably need an amp too, and this is where it gets tricky for me. The grado rs-1's have low impedance right? Does that mean it needs a certain type of amp to drive it? If so, what do you recommend goes well? I am looking for something portable and low-budget. What sort of cables will I need? Are there any basic tips that you can give me? Like hot/cold etc. I am not familiar with the lingo. Your help is appreciated! Thanks very much.