That would be tough to say. The Remedy is made to be portable and applicable to many different devices. It is a S/PDIF input to S/PDIF output reclocking device. It drastically reduces jitter and has proven to be a significant improvement on consumer-grade devices like Apple TV, Sonos, Squeezebox, iPod, Airport Express, etc.
The Sonos is a standalone upgrade for one component that is I2S in, S/PDIF out. The latter mod bypasses the original Sonos audio circuitry altogether.