A Floating Control Bus System (F.C.B.S.) enables the user to connect up to four PM-KI RUBY units, making a diversity of applications possible with complete bi-amp and multichannel connections. Moreover, a ground loop is not formed among multiple PM-KI RUBY units connected; therefore, sound quality is not adversely affected.

Bi-amp mode

Complete bi-amp connection proposed by Marantz enables a level of reproduction of the acoustic field never before achieved. Synchronized operation of two PM-KI RUBY units is made possible by F.C.B.S. (Floating Control Bus System) connection, with each PM-KI RUBY in Bi-Amp mode working as a monaural integrated amplifier.

Power Amplifier Mode

In this mode, this unit works as a power amplifier.

Tone Control Amplifier

An electronic tone control amplifier is used to adjust the bass and treble volumes in 1 dB steps within a ±6 dB range.

Accessories

About the remote control

Features

High quality sound

High performance

Part names and functions