Bob 540 is a 3-channel power amplifier developed and built in Germany. Even with other subwoofers and speakers, this power amplifier guarantees excellent sound. The cooling is passive, which is why you don’t hear any loud fans and overheating due to a possible failure is less likely.
The Class D amplifier is specially designed for the application of 2xIC speakers (L/R) and 2xFlatboyslim subwoofer (connected in parallel).