REMOTE: Volume control by an external resistive controller. EQUALIZATION: It has 3 presets of bass equalization: FLAT for a flat response, EXTRA to enhance, and EXTERN to eliminate information of bass frequencies in the case of using an external amplifier for this range of frequency (without effect because we are talking about a Subwoofer Series). The MODE control allows using 3 generic equalization presets: NORMAL, for a flat response, VOICE for enhanced medium frequency and LOUDNESS for inverse output curve (enhanced treble/bass). It also has manual tone and general adjusting controls. It is also possible to configure the function to play by the frontal LED: switch off, switch on, or module clipping. TALKOVER/PHANTOM: This module includes a microphone input (with or without phantom supply) and the possibility to use it as Talkover, in this case includes two Threshold levels. LINE IN: Balanced & unbalanced LINE level input with own gain control. LINE LINK: Pulling out PRE or POST signal to send them to an external amplification system directly (PRE) or as processing signal (POST). SATELLITE: Thanks to this connector, it is possible to send treble/bass signal to an external satellite system.