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AM/FM/CD micro audio system with built-in iPod® dock

3 Reviews

Item # 257UXJ51

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Our take on the JVC UX-J51

Ready for your iPod
If you're an iPod fan, the JVC UX-J51 might just be the perfect micro component stereo for your bedroom or home office. This compact AM/FM/CD system features a built-in dock where you can drop in your iPod, and kick back while your favorite tunes flow. You'll enjoy plenty of clear, natural sound from the included compact speakers. The UX-J51 sports a cool look, with blue-illuminated touch key controls for convenient hands-on operation. You also get a full-function remote for controlling the system and basic iPod playback from across the room.

Ready for your iPod
If you're an iPod fan, the JVC UX-J51 might just be the perfect micro component stereo for your bedroom or home office. This compact AM/FM/CD system features a built-in dock where you can drop in your iPod, and kick back while your favorite tunes flow. You'll enjoy plenty of clear, natural sound from the included compact speakers. The UX-J51 sports a cool look, with blue-illuminated touch key controls for convenient hands-on operation. You also get a full-function remote for controlling the system and basic iPod playback from across the room.

Get plenty of other listening options
You don't necessarily need an iPod to enjoy great music from the 'J51 — this fully featured system plays regular CDs, home-burned CDs, and discs loaded with MP3 and WMA files. A USB input on top lets you listen to music files stored on a thumb drive, or you can use the auxiliary input to connect any other portable player. The built in AM/FM tuner features 40 presets for your favorite stations. And a built-in clock features dual-timers that can gently wake you to the sound of music on a CD, the radio, or your iPod or USB drive.

Product Highlights:

  • built-in iPod dock for music playback with select iPods
  • compatible with docking iPods, including 160GB iPod classic®, 6th generation iPod nano®, and 4th generation iPod touch®
  • does not support iPhone®
  • front-loading single-disc CD player
  • plays CDs, audio CD-Rs and CD-RWs, MP3 & WMA CDs
  • USB input allows music playback from a flash memory drive or hard disk drive
  • AM/FM stereo tuner with 40 presets
  • built-in clock with 2-preset timer and sleep timer
  • flush, top-mounted touch key controls
  • 40 watts x 2
  • front-panel minijack headphone output
  • minijack audio input for connecting portable music players
  • optical digital audio input for connecting audio from a DVD player or satellite receiver/cable box
  • optical digital audio output to connect the system to a home theater receiver
  • one set RCA analog stereo inputs
  • one set of RCA analog stereo outputs
  • preamp output for optional powered subwoofer
  • 2-way speakers with 4-3/8" woofers and 1" dome tweeters
  • full-function remote control
  • component block: 7-15/16"W x 3-11/16"H x 11-15/16"D
  • speakers: 5-1/2"W x 9-3/8"H x 9-1/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Micro component unit (CA-UXJ51)
  • 2 Bookshelf speakers (SP-UXJ51)
  • Remote control (SM-UXJ51U)
  • 2 "AAA" batteries
  • AM loop antenna
  • FM wire antenna
  • Two 6.5' lengths of speaker wire (with bare-wire on each end)
  • 3 Core filters
  • Instructions (English)
  • Instructions (French)
  • Product Registration Card
  • Warranty Card
  • Important Safety Instructions
  • Warnings/Cautions Sheet
  • Core Filter Instructions

JVC UX-J51 Reviews

Average Customer Review(s):

(3 Reviews)

Little Unit Big Sound

William of Michigan from Michigan on 5/16/2012

Crutchfield Customer Review (What's this?)

Even thought I have only had the unit for a little over two weeks, I am thoroughly enjoying the music quality that it puts out. For the size of the speakers, which are not excessively large, the sound quality is exceptional. It only takes a small amout of counter space plus I did separate the speakers as the instructions recommends and that does enhance the stereo effect. The hand remote is easy to operate and functional - I always use it to operate the system. The one improvememt I could recommend and that is in the IPOD connection; placing the IPOD on the unit is a bit tentative and doesn't seem secure. I would say that this is not the fault of the unit but just the nature of how the IPOD is built. All in all, I am happy with the unit and enjoying showing it off to friends.




James C from east meadow,ny on 2/21/2012

Crutchfield Customer Review (What's this?)

I was researching a mini-system for a long time when i came across this little stereo. Nobody carried it locally and i was lucky enough to find it on line here at Crutchfield. I spoke to the sales rep(sonny), he said it was kinda new and he had not had any experience with it yet, but the specs on the product page looked to be top notch. I was shopping for a high end mini system. I looked at competing products from Onyko, Denon and Yamaha. None of them seem to have higher watts in power that i was craving. I took a chance and ordered this system. WOW. It looks great, has a great remote, subwoofer out and built in iPod dock. IT CRANKS. The speakers have great highs, but there size doesn't really allow them to have good lows. I added a polk subwoofer and wow, you would think there is a rack system in the room. The CD works great,as well as iPod, the tuner is fair, i think I'm going to add an amplified fm antenna to help this out. For the price, features and sound quality I'm surprised that this system doesn't get more attention. I really like it and would not trade it for any mini system on the market.

Pros: style,remote, dual amps,great highs out of speaker, subwoofer out

Cons: supplied am/fm antenna

I rounded up 1/2 star

Kevin from Miami, FL on 7/21/2011

Crutchfield Customer Review (What's this?)

I've only had it for a couple of days, but this little system's got a laundry list of nifty features! My iPhone works fine with it, and you can also connect a USB hard drive loaded up with tunes. As for other ins and outs, it's got a great selection - better than the Onkyo's. The speakers are nice, too. Removable speaker grills are included, but they look more impressive in the buff, so I took them off. The remote is also nice. It's responsive but isn't backlit, but at this system's price, it's not a big deal. There's no function that it doesn't cover, so I'm happy. Finally, the system sounds really, really good. My only complaint is that it's inaudible before 30 - not a deal-breaker, though, because the volume maxes at 80, and between 50 and 70, it's plenty powerful. The DBASS is okay, but I'm sure a sub will really make this unit shine. Overall, I'm really pleased with my purchase. The JVC UX-J51 meets all of my requirements in terms of connectivity, sound quality, and overall features and performance. Add to that Crutchfield's buying experience and free, fast shipping, and I'm a very happy camper.




Hands-on research

Product Research

Overview: The JVC UX-J51 is a CD micro component system with a built-in dock for iPod, USB (2.0) input, and an FM/AM tuner. It's comprised of a single main unit and a pair of two-way, bass reflex speakers. Most functions are controlled using flush, top-mounted touch keys illuminated in blue, with the exception of volume, which is handled by a large, silver knob on the main unit's front panel. A full function remote control is also included.

Audio Features
Tuner Functions
Disc Playback
External Device Inputs
Audio Outputs
Convenience Features
Remote Control

Audio Features

2-Channel Amplifier: A key performance feature is the system's separate left and right channel amplifiers, each rated at 40 watts (80 watts total power). The amplifier is rated at 40 watts per channel (RMS), driven into 4 ohms, at 1kHz, with no more than 10% THD.

Two-Way Speakers: The two-way speakers feature a one-inch (2.5cm) soft-dome tweeter and a 4.375-inch (11cm) cone woofer. The two-way speaker utilize a bass-reflex enclosure with a rear-firing port for better bass and higher efficiency. Each speaker features a pair of spring-loaded terminals to attach the included speaker wire. The speakers features a removable cloth grille. The speakers can handle up to 40 watts and are rated at 4-ohm.

CONEQ Technology: The system's audio performance is optimized using CONEQ technology that matches amplifier and speaker performance to ensure equalized power levels across all frequencies, resulting in a clean, natural sound throughout the listening area.

Tone Controls: You can adjust the system's low, mid, and high range tones to suit your preference. The range is adjustable between -8 to +8 dB.

D.Bass: The D.Bass function allows you to enhance the system's bass response. You can set the D.Bass between 0 to 10.

Tuner Functions

AM/FM Tuner: The JVC UX-J51 Micro Component System features a built-in AM/FM tuner.

Station Tuning: The micro component system offers auto and manual tuning.

  • Auto: The radio automatically tunes in to the next station each time you press the tuning key. Repeat this step until you are tuned in to your preferred station.
  • Manual: Press the tuning key until the desired station is tuned or until you reach the desired frequency.

Preset Stations:  You can store up to 40 FM/AM stations in any combination.

External Antennas: The unit includes an FM wire antenna (push-in) and AM loop antenna (spring-clip).

Disc Playback

CD Player: The JVC UX-J51 Micro Component System featured a compact-disc tray for CD, CD-R, and CD-RW disc playback. The unit supports playback of both 12cm and 8cm discs.

MP3/WMA Compatible: The JVC UX-J51 supports the playback of MP3/WMA audio files recorded onto CD-R and CD-RW discs in ISO 9660 Level 1/2, Joliet, or Romeo format. The unit can recognize up to a total of 512 files & folders (maximum folders: 99 / files per folder: 511). The unit will also display ID3 and WMA tags.

File Format Bit Rate Sampling Frequency Extension
MP3 8-320 kbps 8/11.025/12/16/22.05/24/32/44.1/48 kHz .mp3
WMA 16-320 kbps 22.05/32/44.1/48 kHz .wma

Playback Modes: The JVC micro component system offers Random, Repeat, and Program playback modes.

  • Random Play: All/Folder
  • Repeat Play: Track/All
  • Program Play: up to 50 tracks

External Device Inputs

USB Port: The JVC UX-J51 is equipped with a top-panel USB (type-A) port for playback of audio files stored on a USB Mass Storage Class (MSC) device. The unit's USB port supports playback of MP3, WMA, and AAC audio file formats recorded onto a USB MSC compliant device in FAT 16/32. The UX-J51 can recognize up to 65,534 files and 512 folders. The unit will also display ID3, WMA, and AAC tags. You will be able control basic music functions, such as Folder/File selection, Play/Pause, Stop, Fast Forward/Reverse, Skip Track (Next/Previous), and Repeat from the unit's remote control.

File Format Bit Rate Sampling Frequency Extension
MP3 8-320 kbps 8/11.025/12/16/22.05/24/32/44.1/48 kHz .mp3
WMA 5-384 kbps 32/44.1/48 kHz .wma
AAC 8-384 kbps 8/11/025/12/16/22.05/24/32/44.1/48 kHz .m4a

Note: The unit's USB port does not support iPod/iPhone connection.

iPod Dock: The JVC UX-J51 Micro Component System is equipped with a top-panel iPod dock connector for audio playback, music navigation, and charging of your docked iPod. You will control the iPod from its clickwheel or touchscreen for advanced music navigation. From the included remote you can control basic playback functions, such as Play/Pause, Fast Forward/Reverse, Skip Track (during Now Playing mode), Album Select, Repeat, & Shuffle. All song information will be display on the iPod's LCD screen. This unit does not offer iPod text display. The JVC UX-J51 is "Made for iPod compatible" and supports the following specific iPod models (as of Nov. 2010).

iPod/iPhone Model Generation Media Type Control Type Display Type Charge
Audio Video Remote iPod/iPhone Song/Artist Text Track Info
dock connector 3rd N N N N N N N
4th N N N N N N N
mini 1st N N N N N N N
2nd N N N N N N N
video 5th N N N N N N N
classic 80GB Y N Y Y N N Y
120GB Y N Y Y N N Y
160GB Y N Y Y N N Y
nano 1st N N N N N N N
2nd Y N Y Y N N Y
3rd Y N Y Y N N Y
4th Y N Y Y N N Y
5th Y N Y Y N N Y
6th Y N Y Y N N Y
touch 1st Y N Y Y N N Y
2nd Y N Y Y N N Y
3rd Y N Y Y N N Y
4th Y N Y Y N N Y
iPhone 2G N N N N N N N
3G N N N N N N N
4 N N N N N N N

Note: Apple iPod/iPhone software updates may change functionality results. If you download a newer software version, you may need to reset the device and your iPod/iPhone to regain functionality. If this doesn't work, you may need to revert to the older software version or wait until an newer software update is available.

Auxiliary Inputs: The JVC micro component system features two rear-panel analog auxiliary inputs. There is one stereo RCA input and one 3.5mm minijack input.

  • Stereo RCA: The unit has one stereo audio RCA input for connecting your VCR, tape player, or MD player.
  • Stereo Minijack: The unit also has one 3.5mm minijack input for connecting your portable MP3 player.

Note: You can adjust the input level of these auxiliary inputs to match your other connected sources. You can adjust the input level in  a range from -3 to +5.

Digital Input: The JVC UX-J51 features rear-panel optical digital input for connecting a DVD player or Satellite Receiver/Cable Box to the system. The system will play back PCM (32, 44.1, 48, 88.2, 96 kHz) digital audio signals.

Audio Outputs

Speaker Output: The JVC UX-J51 Micro Component System is equipped with four binding-post speaker terminals to attach the system's speakers with the included speaker wire.

Analog Output: The UX-J51 Micro Component System features a rear-panel analog output to record audio to a connected tape deck or CD-burner.

Digital Output: The JVC micro component system features a rear-panel optical digital output to connect the system to your Dolby Digital home theater receiver.

Subwoofer Preout: The micro component system is equipped with a rear-panel mono subwoofer preamp output to connected a powered subwoofer to the system for better bass reproduction.

Headphone Output: The JVC UX-J51 features a front-panel 3.5mm headphone output to connect a set of headphones for private listening. When headphones are connected, the system's speakers are muted.

Convenience Features

LCD: The JVC UX-J51 Micro Component System features a front-panel blue back-lit LCD for displaying clock, station, source, and menu information.

Dimmer Adjustment: You can adjust the unit's display brightness. You can choose between four settings (1, 2, 3, or Normal).

Display Saver: If the system is not used at all for a set period of time, this function scrolls the display to prevent burn-in of the text on the display and uneven display brightness.

Clock: The JVC UX-J51 features a 12-hour digital clock.

Dual On Timers: This function allows you to use the time to start playback automatically at a specified time. You can set two different timers. You can play back audio from an AM/FM station, CD, iPod, or USB device. You can also set the timer volume. You can set a daily, weekly, Mon-Fri, or weekend timer.

Sleep Timer: This function automatically turns the system off after a set interval. You can set an interval from 10 to 90 minutes, in 10-minute increments.

Auto Power Save (APS): The Auto Power Save (APS) function automatically turns off the system if no operation is performed for 30 minutes after a CD disc or a USB device which is connected stops playing.

Remote Control

Wireless Remote Control: The JVC UX-J51 Micro Component System includes an IR remote control for wireless operation of the system and basic operation of your docked iPod or connected USB device.

One Touch Operation: This system features a convenient one-touch operating function. When in Standby mode, pressing the Play button on the included remote for CD, iPod, or USB, will automatically turn the unit's power on and start playback of that source.


Micro Component Unit:

  • Width = 7.9375"
  • Height = 3.6875"
  • Depth = 11.9375"

Two-way Speaker:

  • Width = 5.5"
  • Height = 9.3125"
  • Depth = 9.25"

Remote Control:

  • Width = 1.9375"
  • Height = 1.875"
  • Depth = 8.3125"

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.