[K60 viola switch replacement]

I originally bought this keyboard as a replacement from my crappy chinese one and was wondering, as much as i love the MV switches on this thing, would i be able to replace them with true mechanical switches?

[HS70 Equalizer doing nothing]

About 4 months after i got my HS70 Pro Wireless headset, I had noticed that the bass wasn't as high as before. I looked in ICUE and realized that the software equalizer was having no effect of the audio output. My windows is fully updated and I've tried several time to do a clean install, to no avail. What can be done to fix this?