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I have a question. A noob here. If I bought this what else would I need to connect to my Desktop? I have a Sennheiser HD 558 and a 6xx. Thanks.
U need dac if u want to play hi-res music on ur comp computer
You can technically plug anything with RCA cables into the O2, so you can utilise a 3.5mm headphone jack to RCA cable and connect the O2 to your desktop via its motherboard or inbuilt sound card.
What would be recommended however is to use a separate DAC, as this generally removes any unwanted coloration of your music produced by your motherboard. That said a good sound card will probably suffice in place of a separate DAC.
Edit: For reference I use a Jds Labs OL DAC
I would get a DAC... NuForce3 or 5, O2's dac... something that will clean up all the "built in" motherboard sound issues. Just remember....
Garbage in, amplified garbage out....
You need a file, a digital to analog decoder chip, and an amplifier. All of them are in your computer. Or you can connect the usb out put to a dac / amp combo, or to a dac, and connect the dac to an amp with an rca jack, or connect the computer to this amp with a 3.5mm to rca jack, but that won't necessarily improve the sound since you're still using the computer amp too. some headphones need more power though.
Just using my hyper x cloud 2 atm because I am waiting for the 6xx to arrive. Right now I have the hyper x cloud 2 plugged into the amp with a rca to 3.5 connected to my desktop and it sounds really muffled. Is there anything I can do?
I have had this same setup, and in my humble opinion the hyper x cloud 2s are simply just very muffled sounding headphones to begin with.
A DAC might improve this, but it will still sound relatively muffled.
Ahh by any chance you also hear some like static or hiss when using it with a hyper cloud 2. Like when people talk there is a popping or staic noise and some sounds just sound really off.
this can be a few things but an impedance mismatch would be the go-to reason to start troubleshooting.