Hi I'm new.
I mostly use the native music app, jetaudio, poweramp, or apollo with DSP manager.
Just installed Neutron 1.82 last month. Have it at my Lenovo S890 and Samsung Mega GT-I9200. After struggling for perfect setting, I feel this is the best player with very distinctive DSP effect (IMHO). It finally works best after trying almost many different config setting. The most trickiest setting is for each frequency and its bandwitdh of the parametric equalizer. For Neutron, I do not use wired head set to avoid overdrive and safe battery usage, instead I use my 14 month-old Rappo 6060 bluetooth headset.
I found some others setting like stereo DSP, crossfeed, 32/64 bit processing, and the rest doesn't really need any tweaking, just the parametric equalizer.
Here is the current setting I have.
Low Band, Cutoff freq = 0050 (best under 64)
Low-band, Q, slope = 2.000
Mid1 C Freq = 0200
Mid1-Band, Width = 4.000
Mid2- C Freq = 1000
High- Width = 4.200
High Band, Cuttoff = 10000
High Band, Q, Slope = 0.750
Set stereo DSP to Surround (not cross feed)
Dither = on
Rendering = 32 bit
Rumble = on
Replay gain = on
Automatic gain protection = off
Pre amp gain = onehalf slider.
Very advisable to use headphone any that have its own power source. It helps the phone from getting heavy burden to its sound amplifier and battery consumption.
Try achieving best sound to your preferences by adjusting each of dB gain sliders (4 sliders)
I believe it worth to try for those who already bought the app. If you don't like it at least you already have had your own preferences of apps and its setting.
Cheers. :) And sorry for the English :P