The Pioneer GM series is a solid amplifier design with a clean black and silver look that blends well in most all installations, it is offered with a built in crossover and in multiple power and channel configurations, just alike all of my other picks.
Pioneer has spent an extensive amount of time in the car audio competitions that focus on bass and as so has made serious stride in the past few years to make a strong powerful amplifier. This technology and design parameter has trickled down into their GM series and is the reason have included them in my best buy list.
Once again I don’t look at the number five position as a last place by any means as there are plenty of amplifier brands that I don’t list at all. I believe that the Pioneer GM series is an excellent buy and as such include it here.