We are pleased to announce the hoped-for debut of the 600 series as a new member of the separate amplifiers starting from the 1000 series that is a memorial model for 80th anniversary of our foundation. C-600f is equipped with 2 pieces of "LECUA1000-WM", the integral system in which the innovative feedback circuit, ODNF version 2.4, and the sound volume attenuator are directly connected in the full mono-block type as the same as its upper model, C-800f. Especially because C-600f is placed in the pre-section where tiny sound signals are processed, we have selected a method that causes the least deterioration in sound quality. All of the various functions suited for the system control center such as phase switching of tone control and balance input/output and selection of balance/unbalance output can be viewed on an FL display with a high level of visibility and operated in a centralized manner with a dedicated remote control.