Those monitors have XLR and TRS inputs, yeah? Like most monitors they don't have a volume control (aside from a level adjust that likely only gives a few dB each way), so you have to control the volume at the source. Couple of ways you can hook them up: Cheapest: Grab a 3.5mm > 2xRCA cable and a couple of RCA > TS adapters and just run directly from your PC speaker out to the TRS jacks of the monitors (assuming they'll take the unbalanced signal, they should). I've run some like this in the past and it does work, but is very dependent on the sound device in your PC; it might be fine, or it might sound crackly and shit. You'll also likely have to run your PC sound at a very low level, which can cause issues in lacking the ability to easily get the level you want. Better option: Use an audio interface / pre-amp. My desktop setup at work uses studio monitors and they were shocking running off the PC sound card. I grabbed a really basic interface (M-audio hub) as I have no real need for inputs (and it has a big level knob that's easy to grab in a hurry!) and it is lightyears better. It runs my headphones easily too, and has an independent level control for them. Only really bug is a slight channel imbalance at very low levels, so I just tend to bring down the system level slightly so I can run the interface pots in a more usable range. If you have an old pre-amp floating around you can do the same sort of thing, you'll just need to use the RCA > TS adapters to connect to the monitor, and likely still use the DAC in the PC and output via an RCA connection to the pre. Hope that's of some help!