It is no doubt that it has become the first choice of standalone time & attendance for enterprises with its strong function and veracity. Please read this user manual carefully to have an initial understanding of functions and basic knowledge of installation, debugging, maintenance, application and management to better use this product. Up for sale is the legendary Luxman C900u Pre-Amplifier (purchased 12 months ago from US dealer). This unit has been meticulously maintained in my system since the day it arrived. Finding details about the Luxman C-900u (and M-900u) wasn't as easy as it should be. The owner's manual, a well-presented hardcover book, is entirely in