An audio signal processing stage for processing an input audio signal into an output audio signal, wherein the audio signal processing stage comprises: a filter bank defining two or more frequency bands, the filter bank being configured to separate the input audio signal into two or more input audio signal components (X(k,b)), each of the input audio signal components being limited to a respective one of the two or more frequency bands; a set of two or more band branches configured to provide two or more output audio signal components (Y(k,b)), wherein each of the band branches is configured to process a respective one of the input audio signal components to provide a respective one of the output audio signal components, wherein the set of two or more band branches comprises one or more compressor branches, each of the one or more compressor branches comprising a compressor configured to compress the input audio signal component (X(k,b)) of the respective compressor branch to provide the output audio signal component (Y(k,b)) of the respective compressor branch; an inverse filter bank configured to generate a summed audio signal (y(t)) by summing the two or more output audio signal components (Y(k,b)); a residual audio signal generating unit configured to generate a residual audio signal (v(t)), the residual audio signal being a difference between the input audio signal and the summed audio signal(y(t)); a virtual bass unit configured to generate a virtual bass signal (w(t)) which comprises one or more harmonics of the residual audio signal (v(t)), the virtual bass unit comprising a harmonics generator configured to generate the one or more harmonics on the basis of the residual audio signal (v(t)); and a summation unit configured to generate the output audio signal by summing the summed audio signal (y(t)) and the virtual bass signal (w(t)). a filter bank defining two or more frequency bands, the filter bank being configured to separate the input audio signal into two or more input audio signal components (X(k,b)), each of the input audio signal components being limited to a respective one of the two or more frequency bands; a set of two or more band branches configured to provide two or more output audio signal components (Y(k,b)), wherein each of the band branches is configured to process a respective one of the input audio signal components to provide a respective one of the output audio signal components, wherein the set of two or more band branches comprises one or more compressor branches, each of the one or more compressor branches comprising a compressor configured to compress the input audio signal component (X(k,b)) of the respective compressor branch to provide the output audio signal component (Y(k,b)) of the respective compressor branch; an inverse filter bank configured to generate a summed audio signal (y(t)) by summing the two or more output audio signal components (Y(k,b)); a residual audio signal generating unit configured to generate a residual audio signal (v(t)), the residual audio signal being a difference between the input audio signal and the summed audio signal(y(t)); a virtual bass unit configured to generate a virtual bass signal (w(t)) which comprises one or more harmonics of the residual audio signal (v(t)), the virtual bass unit comprising a harmonics generator configured to generate the one or more harmonics on the basis of the residual audio signal (v(t)); and a summation unit configured to generate the output audio signal by summing the summed audio signal (y(t)) and the virtual bass signal (w(t)).