Just received my black Geek Out 450. So far sounds great right out of the box but just a few questions I want to bring up. First, has anyone found that there's quite a bit of noise when using IEMs, especially with the 0.47 ohm output? My Heaven V (16 ohms) sounds absolutely terrible with the 0.47 ohm output because of the amount of noise I'm getting. It's usable on the 47 ohm output but I'm still hearing some noise with no music playing. My HiFimeDIY Sabre DAC has no noise compared to the Geek Out. Second, what buffer settings are people using? I'm not exactly sure what difference the settings make.
All the current Geek Outs are just way too powerful for IEMs, especially ones as sensitive as the Heaven series.
That's why I proposed Geek Out 100 - and they are making it!
You should use your Geek as DAC only - this should make the noise go away.