I'm using Logic Studio on an iMac, and while I've long been used to working with MIDI, I'm now looking to work with doing my own vocals. I bought a Behringer C-1 condenser mic (XLR), then released I needed a power supply, so bought a Behringer Micropower PS400, and then connected that up to the Built-in input at the back of the iMac. Here's the problem - the recording volume is seriously low. The audio wave profile is practically flat. I have to speak within a couple of inches of the mike to have any hope of anything recorded. Additionally, any attempt to increase the volume, such as the built-in input volume, and/or applying gain via a compressor plugin, results in incredible hiss. I haven't heard anything as bad as this since recording to cassette in the 1980's. The question is, what am I doing wrong? I'm currently looking at 3 possibilities: 1. There's something wrong with the mic and it needs replacing 2. The PS400 power supply is a cheap knock-off and needs dumping At the moment I figure I'm looking at getting a Blue Yeti mic to replace my existing one, OR get a Focusrite Scarlett 2i2 to replace the PS400. However, because I'm not sure what's causing the problem, I have no idea which option will address it. Any pointers gratefully received.