The Wohler VMQ4 4 Channel Audio Monitor is perfect for tight rack situations. In just 1U of rackspace you get simultaneous monitoring of up to four audio sources on four analog inputs with voice quality fidelity. Each channel in the VMQ Series has its own power amplifier and speaker, meaning audio sources are totally separated from analog input to output. In an Ultra Near Field situation you get enhanced source distinction with the discrete speaker outputs. The VMQ4 accepts four standard analog inputs. Each of the four monitored channels has a separate volume control, mute buttons, and an LED signal. This instantly informs you of which channels are active and lets you perform instant adjustments to volume. All VMQ monitors also feature extensive magnetic shielding with output limiter circuits built-in to protect the speakers, no matter where you choose to place them.