Very low noise. Sounds beautiful.Inputs and and outputs fully transformer balanced with Lundahl transformers.Very high build quality/aluminium.Built for broadcast.Defect. Good vintage condition. Small rasp in some potentiometers and scwitches. One rotatable potentiometer stuk. Shannel 4 sliding potentiometer broken. Not tested all, sell broken and as is. S/N 1752. 110V, 220V Easy upgrading to modern High-End, with newer op-amps, etc. More information: Please see pictures.Price not incl inport costs/TAX.