This was my personal unit and third prototype for the modifications I use to do. Been a few years since it been in use and even then it has low hours. Has the Audiophile output buffer circuit. Super cap back up for he memory. Lasts about 24 hours. Has the HD/Forced Analog/Mono switch. Also has the backlight disable modification so the display light turns off when you turn the tuner off. World class DX capabilities with modifications to make it easier to use and sound better. Comes with original box and remote. $600