Front Panel Stereo Aux Input for each Channel, Master Volume Control w/ Eight Segment LED Metering, Front Panel Direct In Jack, Connects and Drives up to 18 Headphones Simultaneously, XLR and 1/4" Main Inputs and Outputs, Dual Function Balance/Mix Control per Channel, Individual Output Level Control per Channel, One Front and Two Rear Mounted Headphone Jacks per Channel, Precision Four Segment LED Metering Per Channel, Six Independent High-Power Headphone Amplifier Channels, Multiple Monitoring Settings per Channel, six-channel stereo headphone amplifier, Parallel Main Outputs for Multiple Unit Use Made in: China UK/EU Power supply included: Yes Number of Channels: 6 Variant: HEADAMP Colour: Black Frequency Range: 20 Hz - 50 kHz Headphone Output: Yes Impedance: 40 Ohm Inputs: Jack TRS 6,3mm Inputs: Balanced XLR Inputs: Balanced Jack 6,3 mm TRS Outputs: Headphone Jack 6,3mm Outputs: Balanced XLR Outputs: Balanced Jack 6,3 mm TRS Power Supply: Adapter USB: No