The Hear Technologies Hear Back PRO 4-Pack is a personal mixing system offering independent multi-channel mixing for up to four performers in the studio or on stage. It includes one Hear Back PRO Hub, four Hear Back PRO Mixers, four 50’ Cat6 cables, an eight-port network card, and a Waves SoundGrid I/O card. 24-bit A/D and D/A converters deliver detailed audio with extended dynamic range and resolution up to 96 kHz. The low system latency of less than 0.25 milliseconds ensures there will be no monitoring delay.