Each to theyre own of course.I myself havent liked anything that RF has made since around (92-94 maybe) DSM line of amps,speakers and subs, Ive just never had good experiences.but.I have heard the R series components and they do fairly decent.That HU may have a built in amplifier in the unit itself. Id check on that. May create some issues with adding an external amplifier.If it has an under dash amplifier you can tap in just before that and get your external amp going without cancellation issues/problems