Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si parameters:: 1969 Small Group A Tube : TIP41C Output : 5W per channel consumption: 20W per channel source: DC single 12-30V Static current: prior to shipment in a standard 25 volts DC to 0.8-0.9A Board size: 5 * 5cm/1.97*1.97 inch Thickness: 1.6mm fiberglass board double-sided design Board material situation: Resistance: full -color ring metal film resistors Adjustable resistance: Sealed multi-turn adjustable resistors Input capacitance: Promise of capacitance Farah Electrolytic capacitors: high-capacitance wiring methods: 1969 finished panels and audio speaker wiring . material:plastic colour:green Package Included: 1x DC 12V 1969 Class A Amplifier Board 2x Thermal insulation pads 2x insulation caps Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.