Review by T. Thomas for JVC KW-XR810 Double-DIN Bluetooth Dual USB/CD Receiver with USB 2.0 for iPod/iPhone, and Bluetooth/Satellite/HD Radio add-on capability
Rating:
Installed it in 2010 Nissan Frontier Extended Cab, along with the HD Radio tuner, 6″x9″ Alpine SPR-69C speakers in front and 6.5″ Alpine SPS-600′s in rear.

Pros:

1. Very easy, intuitive navigation, especially for all the features, including large dedicated buttons for preset radio stations — which was important to me since I listen to the radio a LOT. Menu and Back buttons make the nested menus easy, especially when using USB mass storage (up to 20,000 songs). Can Hide infrequently used menu options (such as AUX input) using Setup. Can readily “customize it” to meet your preferences. Once you’ve tweaked your setup, it’s very easy to use.

2. Color matched my dash lights VERY well, with separate settings for the display and the buttons, including totally different setups for night and day. Display is fairly customizeable, as well, in addition to choosing Negative and Positive backlighting.

3. Great internal equalizer provides 3 different adustments for each of at least 3 frequencies in each of the 3 broad ranges (High, Mid, Low) — making it more like a 9 or 10 band equalizer. Can finetune it to your speakers and the car’s acoustics — your tweaking is most easily done by pressing and holding the preset that’s closest to what you like, then make your manual adjustments and its automatically saved as a USER preset that’s easily accessed via this dedicated EQ button. Or, you can do it the hard way using the Setup >> Audio menu.

4, Strong internal amp is certainly not “over-rated” at 20 watts — it will produce 20 watts with little noticeable distortion. With good aftermarket speakers, you may not (I don’t) need an amp or separate sub, though I’m sure it would sound even better. Multiple LOUD settings to enhance low volume, if desired, but I don’t use them — just tweaked the EQ. You could boost the volume even more by jacking up the input volume (see #5 below). Of course, you have 5 sets of RCA out jacks and built-in subwoofer control if you want to amp it up…

5. Adjustable input volume for each input source(Aux, USB, CD, etc) other than the Radio, so you can get the same output volume from each source withour jarring (and possibly harmful to your ears or speakers) volume changes when switching sources. Even the Aux input sounds good, though it doesn’t quite compare to the 24-bit Digital-to-Analog (DAC) converter in the headunit.

6. Clean, great sound, though I didn’t try it with just the stock speakers. With all the adjustments, you can tailor it to the type of music you typically listen to. Surprising bass with these nice Alpine speakers. The stereo in my truck now blows away the Pioneer/Bose setup in my house!

7. Attractive, without being flashy. Looks almost stock… hopefully won’t attract the attention of theives!

CONS:

1. Couldn’t transfer phonebook from my old Casio Boulder. Easily paired up to it, and the Bluetooth works great otherwise. I just dial out using Phonebook on my cell, and the headunit takes over. Could still manually dial using headunit, but it’s more cumbersome. Sounds great — callers say it sounds like I’m just using a headset, without echoes, road noise or other distractions.

2. Didn’t recognize my Sansa Clip MP3 player – perhaps because I also have a microSD card in it. Bought a 8GB USB flash drive that works great, and use it on the rear USB, hidden in glove compartement. (The tiny USB Bluetooth adapter stays in the front USB and isn’t very noticeable at all.)

3. File names and folders still limited to 25 characters, which initially required some renaming of the files. This has little impact on the display, however, since the Tags (Artist, Album, Song Title) can contain up to 128 characters. Can select to scroll long tags once, repeatedly, or turn scrolling completely off.

4. FM radio reception isn’t really any better than stock, though the sound is clearer with less static on normal AM/FM. AM reception seems better than stock, and much clearer overall. HD radio sounds GREAT, though HD stations and their range are still limited. I saw HD as an investment in the future, without subscription charges, especially since the FCC just recently approved the HD stations to increase their broadcast power (i.e. range) ten-fold or something like that.

5. Glossy faceplate and buttons show fingerprints and dust, and makes it look “less stock” than it would if it had a textured finish. Otherwise, matches stock dash very well. At night, with the colors adjusted and stored via setup, it looks like it came from the factory instead of having a multi-colored light show… See the photos that I uploaded.

Overall, I’m VERY, VERY pleased with the upgrade. The improvement in sound (not counting flexibility of two USB inputs, AUX, HD radio, etc.) over the stock single-CD (non Rockford-Fosgate) system is simply incredible. With the 6×9 Alpines, you can crank it up and feel the bass thump your chest. IMO, this JVC has the most features available at this price point in a double-DIN deck, those features are easy to use, and the sound won’t disappoint!

Review by E. Lopez for JVC KW-XR810 Double-DIN Bluetooth Dual USB/CD Receiver with USB 2.0 for iPod/iPhone, and Bluetooth/Satellite/HD Radio add-on capability
Rating:
This radio has excellent sound and great colors scheme for any custom vehicle. The bluetooth works really good for audio with my iphone, but telephone part still sucks.

Like I said the sound is really good but of coarse I do amplify my sound with a pair of amps.