PRICE REDUCTION TO $500. Asking price includes free shipping to Continental 48 and PayPal fees. This is a stock SOtM tX-USBultra bought new three years ago. This is one of the more transformative pieces of gear I have had over the last 3-4 years. Works perfectly. It comes with a switch mode charger but you will want to upgrade the power source for best results. It will accept 6.5v to 9v from a power supply. Original box.