My ViPER4Android Profile -> I'm using in-earphone from sennheiser

V4A earphone setting

FX:
<Headset>
1. Master Power: ✔
2. Playback Gain Control: ✘
3. FIR Equalizer: ✘
4. Convolver: ✔
(ii) Impulse Response: Sony Xperia Rev2 ClearAudio+
5. Field Surround: ✘
6. Headphone Surround +
7. Reverberation: ✘
8 Dynamic System: ✘
(iv) Tube Simulator(6N1J): ✘
9. Fidelity Control:
(i) ViPER Bass: ✔
(ii) Bass Mode: Natural Bass
(iii) Bass Frequency: 60Hz
(iv) Select Bass Boost: 10.0 dB
(v) ViPER Clarity: ✔
(vi) Clarity Mode: OZone+
(vii) Select Clarity: 10.0 dB
10. Auditory System Protection:
(i) Cure Tech+: ✔
(ii) Select Binaural Level: Moderate
11. Master Gate (Limiter)
(i) Output Gain: 0 dB
(ii) Limit Threshold: 0dB


XHIFI:
<Headset>
1. Master Power: ✔
2. Playback Gain Control: ✘
3. FIREqualizer: ✘
4. Audio Reconstruction: ✔
(ii) Hi Clarity: 50
(iii) Lo Contour: 20
5. Master Gate (Limiter):
(i) Output Gain: 0 dB
(ii) Limit Threshold: 0 dB



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✔ = checked
✘ = not checked

Android app here: http://forum.xda-developers.com/showthread.php?t=2191223
Works an almost every Android OS (AOSP/AOKP) without patching everything!

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Filter Generator Explained here: http://forum.xda-developers.com/showpost.php?p=41776165&postcount=1669

Download Impulse Response Samples (for Convolver):
ASUS SonicMaster Lite - Waves MaxxAudio Wizard IR Samples: http://forum.xda-developers.com/showthread.php?t=2322596
Sony Xperia New S.Enhance IR Samples Rev2: http://forum.xda-developers.com/showthread.php?p=41320703
Creative ZEN X-Fi IR Samples: http://forum.xda-developers.com/showthread.php?t=2308239
V4A IRS Index Thread: http://forum.xda-developers.com/showthread.php?t=2216193