Power amplifier Threshold SA-4e.Made in USA. The top best line from SA.Pure class A. Power - 100 watts per channel at 8 ohm IN PURE CLASS A - this must be multiplied by about 4 and you get comparable 400 watts in class AB.The device is like new - turn it on and listen for decades.. The sound is clear, natural, powerful, fast, with an outstanding bass component with a characteristic “pinch”. Confidently “holds” absolutely any acoustics. The photo shows the condition.Delivery 4-5 weeks.