Summary: Same as the other person said , it worked for a month then I kept getting tuner error every couple weeks that turned to every couple days that turned to not working. More junk made in China with no quality control.
Summary: I purchased this tuner less than a year ago along with my stereo, and it worked well for about four months and then my AVH-P4000DVD receiver started to display "Tuner Error" when trying to use the HD tuner. It would work fine if I switched to it when the stereo was first turned on in the morning, but if I turned it on after that I would get the same error.
Summary: I purchased this along with a Pioneer DEH-P4100UB head unit from Crutchfield. They had a great rebate program and I got the HD tuner for about $20. Installation was very easy. I ended up with a ton of extra cable, but that would be good if you had to mount the unit in the trunk or something. The interface between the external HD radio and the headunit is not very easy to use. I don't like it, but my wife HATES it.
Summary: First my background, I worked in a stereo shop from age 16 to 18 and I am an electrician. I have installed many stereos for friends and in my own vehicles over the years. I was excited about this whole HD radio thing so I bought two Pioneer F700BT head units along with two of these GEX-P10HD tuners and upon installation of the first unit into my truck, the tuner worked flawlessly with my head unit. Sound was crystal clear and and I pulled a strong signal.
Summary: Bought this to go with a Pioneer DEH-P6000UB head unit. The Good: HD Radio! It's been nice to discover all the programing out there I never knew before. A few of the stations in the Nashville, TN market broadcast 2 and 3 stations on their HD freq. Easy to install! Just 2 wires (positive and ground), the IP Bus cord, and the antenna. No problem! Would have been nice if they included a Y adapter for the antenna so you could use the built in tuner if you wanted (see below).
Summary: I ordered my equipment (DEH-P6000UB and GEX-P10HD) from Crutchfield late in June '09. After receiving my package about a week later, I commenced with the install. Soldered, heatshrunk, and taped all wire splices. The headunit has worked flawlessly since the install. Alas, in mid-October I noticed I was only receiving static through the HD tuner.
Summary: Seems to work ok but some things just are not right, like even though you program the presets they are all blank other than the preset number. I searched around and it looks like its a known problem and sounds like Pioneer can't fix it becasue it is a software problem with the tuner and there is no way to update the firmware on the tuner. Also doesn't get near as many stations as I would of expected.
Summary: I just purchased this unit for my Accord 07 with an Avic-f700bt and I have to say this is an incredible improvement over standard FM and AM. The sound quality is absolutely stunning for OTA (over the air). I was on the fence for some time whether to get XM/Sirius or HD Radio originally I was going with satellite for the main reason of the overwhelming lineup they have.