i bought two of these. both seem to work fine. i am in the nyc area and there is hissing on almost all channels but it is very minimal. outside the city (long island) it works really well. another thing i have noticed is that depending on the strength of your antenna and the quality of your radio you may get better or worse sound. in my corolla, there is hissing. in my friends newer accord, he gets much less hissing on the same channels in the same area. so assuming the accord has a better radio than my corolla (which i feel is a fair assumption), it makes sense. gave it a 4/5 because of the hissing. built quality is okay. when i used the extra outlet, i heard a cracking noise when i plugged in my gps power cord. the outlet worked fine and i have not heard that sound again. and it is also not a loose connection. hope this helps!