All in header. There is a lot of interference in FM radio. I connected this stereo to an external amplifier via the RCA outputs. I haven't measured the output voltage on them, but I think it's pretty low. The FM radio is barely usable as the stereo picks up a lot of interference, even on very local stations here in town. Bluetooth was easy and fairly sharp, so that's a plus, as is the resolution of the display. The rear camera works well but the resolution is very poor so I'll probably buy a separate camera. The equalizer only has bass and treble settings. , and an additional "loud" checkbox that you can check or uncheck, which appears to be some sort of bass booster. The output sound quality doesn't seem very good in my opinion and is significantly worse than the Pioneer deck I had. Basically for some reason this stereo doesn't offer full "resolution" or hi-fi sound, not sure how or why. Also, I'm not sure if other similar decks sound the same or what's wrong. Anyway, am I happy? .hardly. Since the sound quality isn't very good, it would be nice to have an equalizer with 5 or more bands to get the full sound.
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