The HM-8 offers 8 independant Aux inputs for up to 8 individual stereo mixes. The 19" rackmount HM-800 delivers flexible, robust 2 headphonoe outputs per channel and is is perfect for headphone distribution for studios, practice spaces and more. Excellent Sound QualityPremium analog circuitry and design delivers an ultra-low noise floor and high headroom. Ultra-FlexibleFrom a simple yet effective way to split a single stereo signal out to four pairs of headphones to robust headphone distribution