A compact ultra-low noise pre-amp that amplifies phono signals from a turntable to line level signals. The unit can be powered using the provided UK power supply or additional 9V battery if preferred (not supplied) and comes fitted with a grounding screw to eliminate additional noise from inference.Power supply: 9V DC, 100mAvbCrLfBattery (optional): 9V DC (1 x PP3)vbCrLfEqualization: RIAA correctionvbCrLfFrequency response: 30Hz - 20kHzvbCrLfGain: 34dBvbCrLfInput impedance: 50k ohmsvbCrLfOutput impedance: 50k ohmsvbCrLfDimensions: 30 x 70 x 90mmvbCrLfWeight: 250g