Jolida JD 202A Tube Stereo Amplifier Fully Integrated Stereo Amplifier: Input 350mV driving 40 watts, maximum 50 watts output. Multiple Inputs: Front mounted selector switch-CD, Tuner and Aux (for TV, DVD Player, VCR or computer). Custom Wound Audio Transformers with a core of German grain oriented silicon steel. State of the Art Components: ALPS or Panasonic audio potentiometer, gold plated RCA input jacks, gold plated five way speaker connectors. Low Feedback Design: Only 9 dB. 15th generation proprietary design. Secondary can be configured for a 4 ohm or 8 ohm load.