Originally Posted by Baycode
I am using Samsung Galaxy S2 (i9100) as main source and the amplification is poor for higher impedance earphones, so I sometimes plug it to my E11 amp but in that case I loose some details.
Yesterday I have purchased a sound amplification booster software called as "Voodoo" (Known as Voodoo Louder) from the Playstore. It is supposed that, this software only controls and raises the analog output not a digital amplification effect. So amplification does not make a weird effect like distortion. I have gained about 7dB and the price were nearly free (1.5 USD from my country). Worth to try...
FYI Android users.
Device supported: Samsung ROMs
Galaxy S II International: GT-I9100
Galaxy S II AT&T: SGH-I777
Galaxy S II Sprint: SPH-D710
Galaxy S II Korean: M250S
Galaxy S II Japanese: SC-02C
Galaxy S II US Cellular: SCH-R760
Galaxy Note International: GT-N7000
Galaxy Tab 7.7 International: GT-P6800
Galaxy Tab 7.7 International Wi-fi: GT-P6810
Galaxy Tab 7 Plus: GT-P6200, GT-P6210, SGH-T869
Galaxy S II LTE and HD (Qualcomm and not Exynos: totally different hardware) are NOT supported.
CyanogenMod or MIUI users: any version should work since LOUDER 2.0.
Recent unofficial Jelly Bean ports break the application, please run reliable stable firmwares instead.
no dice on Nexus 5......