Very good full range amplifier, no built-in filter, only level adjustment and gold-plated inputs. I have combined it with a Pioneer sph-10bt source and Audison apk 165p speakers. It drives them satisfactorily, the better the resolution of my music files, the better the result, and of course we are talking about flac files. Bridged for driving difficult loads, the sub is even faster and shows its power, it definitely takes several hours of playing to settle. It is definitely worth the money from the moment you know what you are asking for and why you are asking for it, after all it is not just any amplifier but belongs to Pioneer's digital reference series. The best thing is definitely to have two in a monoblock, one for each door, very good resolution and power!!