The Roland Bridge Cast features multi-functional microphone effects and EQ, and is easily powered via USB. - Brand: Roland - Model Name: Bridge Cast - Features: Microphone effects, EQ, gain adjustment - Connectivity: Microphone input, line output - LED Indicators: Colorful LED indicators for each channel - Power: USB powered - Control Knobs: Knobs for volume, filter, and effect adjustments Thank you for viewing. Ships the same day. The manual is still sealed. It's practically new.