B004GE89K4 TOA U-14R Dual Input Priority Module with Automatic Gain Control, Used in Conjunction with TOA’s 900 Series and BG-1000 Series Amplifier, Two Line Inputs, Auto-Mute Function

For applications with business music plus an on-premises CD jukebox or other source
Two Line Inputs – Jukebox and BGM
Auto-Mute Function with adjustable Mute threshold
Automatic Gain Control (AGC) on Jukebox input for consistent signal levels
Individual Input Level Controls, Stereo-Summing Dual RCA Jacks