I have AKG K271 MKII headphones for silent guitar practice and good music experience. I'd also love to record my guitar, possibly with some effects on PC.
My current setup is guitar -> combo amp -> line out to PC -> headphones.
a) how much will decent sound card help while listening to high-quality music (I'm running through onboard card right now - my motherboard is ASUS P8P67-M PRO rev-3, ~4 years old)?
b) when recording, I hear quiet noise on the background (I have both good amp and cable). While practicing, when I reverse amp-PC connection (PC speaker output to amp aux in), there is a LOT of noise. Would decent sound card help with this?
If yes, what is better - external USB sound card, or internal sound card?