The HS series reference monitors have been created by Yamaha's studio monitor engineering team to deliver exceptionally flat, accurate response that you can trust. Unlike "monitor" speakers with exaggerated bass and treble that make a good first impression but can't be relied on for accuracy, the HS series were designed to be true studio reference monitors in the tradition of the legendary Yamaha NS10M. Whether you're mixing for stereo or 5.1 surround, mixes that sound good on Yamaha HS series reference monitors will translate accurately to the widest possible range of reproduction systems.