I would give it 5 but, the inability to store EQ settings is a hamper to that. The EQ feature is great for tuning your car stereo or whatever. I also do not like that it erases the EQ if u happen to move off manual to other selections. Manual EQ select after is flat for example. Being able to disable the EQ easily is a plus as well as i have one car with an EQ set properly. Because I like tunein radio sources and this works with it that is a positive. Also has some usability issues for low signal strength conditions. Kept me from buying a new stereo for one car for now tho as the EQ function cleaned up the sound once optimized by ear.
samfromAL about Denon Audio, v1.1.7