Just sold my main head so I'm using my backup Backline 600 as my main for right now. Its powering my Avatar 410 Neo. (4ohm) I wanted to add another 4 ohm cab, ideally a used Avatar 212, but I dont think the Backline would cut it. I dont even think the BL could run @ 2ohms. So I'll need a head to go with it. I was wondering what you guys would do with $600. Could be any combo of things new or used. Whether just a head, or a preamp/poweramp setup. Or just get a power amp to boost the BL? I have a floor line6 Bass Pod (bean looking one) and I have heard of people using that as a pre and runing it into a power amp. I like the sound of the line6 so If anybody has experience with that, please share. Im pretty much open to any ideas, it will most likely have to be used since its a pretty low budget. Even if your suggestions are around 800-900, id still love to hear them.