Hey all. I'm currently working on a project where I use a laser to transmit music playing from my iPod. The laser is hooked up to the iPod through a circuit, and there is a solar cell that the laser is pointed at. There are two wires coming from the solar cell that are connected to a stereo cable. My problem is that the sound coming from the speakers is very quiet, and I want to build an op-amp amplifier for the signal. I've searched for some stuff online but I keep getting a bunch of different things. Can I just basically use a single signal amplifier for each channel separately? Or do I have to build a more complex circuit to handle both of the channels? Thanks for your help.