Proel AMP30XL - Manuale (Pagina 27)

• AUX INPUT (INPUT 5).
L e R RCA input connectors allow the input of a stereo signal by left
(L) and right (R) inputs. This stereo input is useful to connect a
stereo external audio source.
• MAIN IN input and PRE OUT output.
MAIN IN input is connected to PRE OUT output by a jumper. It’s
possible to improve the overall sound quality inserting an external
unit (i.e. equalizer, compressor etc.). For connection wiring please
refer to the following picture.