I've been using DeskFX Plus for 3 weeks now and am very happy with it. I have a Windows 10 Surface Pro 4 and I stream to a pair of custom-made Bluetooth speakers. Out of the 5 built-in presets, I only like the "retail" one. I use both the "visual" or "parametric" settings. I find that when streaming with either Spotify, or YouTube, or Twitch, different songs sound better with the different settings. Sometimes when I stream videos, I power off because the amplification isn't needed and adds too much intensity to the sound.
Although I like the "retail" setting, I find that it is too treble heavy and light on bass. I'm far from a sound engineer and know very little about equalizers. If anybody who knows what they are doing and has any preset (*.dfx) files to share, I'd very much appreciate it. As I'm composing, I found the preset high-pass "General Audio Cleanup" 200 hertz does a much better job of smoothing out the sound than the default 502 hertz setting, and am using this for now.