Configuring  the WinAMP (2.x) MPC-plugin

Startup WinAMP & Press: 'Ctrl+P'
Goto:   Plug-ins > Input    &    Select: '.mpc Musepack plugin X.XX [in_mpc.dll]'
LeftClick: 'Configure'
Equalizer settings:
        > Equalizing by: 'Musepack'
        > Dynamic range: '±6dB Equalizer settings'
ReplayGain settings:
        > Mode: 'ReplayGain album based | ClipProtect off'
        > Headroom: 'K-14' (or K-20 for good setup)
Dither / Noise Shaping:
        > 'Dither output (1 LSB dither, triangular distribution)'

Source: PiMP guide by MTRH.