Shure SRH1840 Professional Open-Back Reference Headphones Controller Accessories As delivered it provides 24

As delivered it provides 24 analog inputs and 24 analog outputs including 8 mic preamps

and makeup

With GLM room calibration and both analog and digital AES/EBU connectivity

or unison modes

Shure SRH1840 Professional Open-Back Reference Headphones Controller Accessories As delivered it provides 24The SRH1840 is an open back circumaural headphone designed for mastering engineers, audiophiles, and critical listeners who demand the most transparent, natural sound reproduction possible. Individually matched 40mm neodymium drivers ensure left right consistency, while the open back design provides an expansive soundstage with natural spatial imaging. Key Features Open back design: Expansive, natural soundstage with realistic spatial imaging Steel