jbl m-patch active-1 Great Unit! I have 2. great shape with power supply 100 Firm Please Precision Monitor Control Plus Studio Talkback and USB Audio I/O The M-PATCH ACTIVE-1 accommodates four input sources (3 x stereo analog and 1 x USB) and three stereo analog outputs plus USB. In addition to the core functionality of providing seamless A/B switching between input signals and output speaker monitor systems, the ACTIVE-1 delivers a full complement of audio monitoring functio...