Excellent multi-input MC step up or head amp with the dedicated power supply. The PSU has two outputs, just in case you have another Threshold M series component. The PSU is 220V so its good throughout Europe and other civilised nations. However the step up itself runs on 20V so it will work with any suitable Threshold component. Theyre both in excellent working order. No LEDs or switches or anything - these are purist devices, leave them connected. If there’s no Buy It Now price displayed, there’s no Buy It Now price Unless stated, I ship overseas. If the price isn’t shown, please ask If its not shown or mentioned, its not included Please look at my other items _gsrx_vers_1516 (GS 9.3 (1516))