Yes, it works. But not with the system EQ. Without doubt Neutron's DSP is the best third-party EQ. But no third-party EQ can compete with the system EQ as far as power, volume, and skull-rattling bass is concerned. That's why Viper4Android requires root... to become the system DSP (can't root NEX 3 ...
As I said, Neutron as well as the others mentioned don't support the system DSP, so I can't use the system EQ with the player. I have enabled "DSP effect (device)" in Settings, of course.
Vivo NEX 3: a host of third-party audio players and radio players don’t support Vivo’s EQ, including Neutron, JetAudio, and PowerAmp, and as system DSP is superior to third-party EQ it’s a real let down. The NEX 3 audio player - with root/sub-folders non-existent – is awful. Vivo support in reply to...
Five FLAC tracks in a folder - each track multiplied EIGHT times, so FORTY tracks listed when there should be only five. Other players show five, file explorer shows five. Rescanned, no difference. Deleted Neutron database, no difference. Deleted the tracks from phone thinking they might be corrupt ...