Hello everyone, I have recently been using my phone and laptop to test speakers using a 3.5mm cable. I have noticed that my phone makes the speakers louder than my laptop. I have also noticed that my laptop's headphone port is somewhat louder than my line out port. The only problem is that the volume has to be set to max for the speakers to have decent volume. I'm wondering how much power the phone (htc one if it matters) is actually outputting to get an idea of what sort of amplifier I should be looking for. I'm also wondering if a desktop could output more power than the phone, and if there would be a power difference between the motherboard sound outputs and a pci soundcard's outputs. Thanks in advance.