Right, where do I begin.?
You will need 3 apps - Power amp, Equalizer and Volume +, installed to begin. Each application is free. The purpose of each app is as follows.
Poweramp - A top music player with eq functionality
Equalizer - To further enhance eq levels
Volume+ - To give the sound more legroom and boost sound levels
Power amp - http://market.android.com/details?id...pz.audioplayer
Equalizer - http://market.android.com/details?id...apps.equalizer
Volume + - http://forum.xda-developers.com/atta...8&d=1309854453
Simply apply the settings as shown in the below screenshots.. Follow exactly for best result.
If you find the highs a tad too sharp, drop the treble slightly in Poweramp.
To achieve a deeper bass, in volume+, set the bass to +5 but try not to go much higher as the sound quality will impair.
To higher the volume use Poweramp and higher the amp slider by a tiny amount and to avoid distortion do not let it go past the midway mark.
Drop the 8k slider down in poweramp to help reduce the sharp frequencies, which can hurt the ears sometimes running at a high volume. If using external speakers rather than headphones, these settings may push the sound to distortion, so be sure to set volume+ to external speaker mode for best possible effect.
Currently using Volume+ may lead to fc's when making a call, even though the fc occurs, the effect of Volume+ should still be active, currently theres no workaround as i'm aware.
If you believe you've found an even better combination of settings then please share! Just remember to post which earphones/headphones you're using.
Update : download "audioboost sgs2" from the market and set the desired volume level to around "82" for a cleaner amplified sound, this works better than volume+ for most people.