Default Sound app?

Very unimpressed with the sound quality....have tried 3 different equalizers and when turning up treble the sound actually gets quieter. Are there any GOOD sound apps ie dsp that work on tw roms?

Samsung Galaxy SIV
Graviton Rom
Ktoonsez 11/14 Kernel
Device: Samsung Galaxy SIV I337
ROM: Open Source Evolution (OSE)
Kernel: CPA POKE 1.7
Modem: NB1