@ProtegeManiac is this a good DAC to buy as agreed? SMSL-SU-8, Link to Massdrop page.
This is for the He-4XX and other planar headphones that i plan to buy in the future. Just checking if it has the right inputs and ouput ports that you think I need, referring to your design map from before:
Laptop (MSI NAHIMIC VSS On) combo SPDIF/headphone jack used as SPDIF output >3.5mm to optical> DAC >analogue RCA> HPamp >headphone cable> headphone
Yeah but you'll need the SH-8 or any other amp to drive the headphone.
Still...have you tried the the headphones yet, especially the AD900? And just on your laptop? Because really if imaging is what you're going for the K70x doesn't have a large advantage on music. It might be worth investing on additional equipment to make it work at its best for listening when that's the only thing going on, but once you have to process virtual stimuli and reacting accordingly it's not easy to compare how much effective a headphone with an inch wider and deeper soundstage is more so when you have to 1) spend money and therefore 2) possibly just be biased to believe that it was worth it.
HE400 might not even compete with those two for gaming.