Sometimes you need a little bit more is a must – the PP 1SUB is the ideal complement for the PP 41DSP if you are looking for additional bass power. This extremely compact-sized subwoofer amplifier drives our MATCH Plug & Play woofers to the limits. Don't worry about the proper and sometimes tricky adjustment of all parameters like crossover frequency, gain and phase. That part have we already done for you when we created the car-specific setups for the PP 41DSP. So the PP 1SUB not only benefits from the sophisticated DSP technology of the PP 41DSP – it proves as well that it is a must to combine these two amps as the PP 1SUB hasn't been designed as a stand-alone amplifier for general use!