Great Sound bar, but was plagued by the POPPING issue. In the end, I was able to fix it.
350133
I have a mixed review for this soundbar. I had received it as a gift roughly 2 years ago and I believe it was originally purchased from Best Buy, but I hope my review here can help others. The soundbar sounds great with some exception to the dialog in a movie or TV show. The action is loud, but the dialog can be soft, so finding the correct volume for enjoyment might take some tinkering with. I tend to have the remote in hand to adjust as needed. The style of the bar is nice, with a black wood grain finish with speaker covers that seem to blend in with the unit. The sub woofer syncs to the unit in the matter of a few seconds so I have not had any trouble as mentioned on here with past units. Mine was manufactured in October 2013.

Now here is where I have had an issue. As many that have posted in this review as well as online in other forums I have experienced the POP and loss of audio issue. At first the issue was every once and a while and resolved with turning the power on and off with the remote. Then the issue became more frequent which needed a hard power cycle by unplugging the unit and plugging it back in. Finally it came to the point where not even unplugging the unit would play audio. The lights on the unit lit up fine, the sub synced, but I could not get any audio out of the bar. I started by contacting Pioneer for support. The product was out of warranty so they wanted me to pay for shipping back to Long Beach (mind you I am in New England) as well as $80 for a diagnostic fee, which would be used towards repair should they find anything. At this point I would be $150 in the hole just to get the product out to them. For that price I could almost buy a new one. Not wanting to do this I decided to research repairing the device myself.

Now I am not an electrician, nor a certified repairman, but I have performed my share of circuit board tinkering with Arduinos and other boards from Sparkfun. So with some research online diagnosing issues similar to this I found it was most likely a blown or bad capacitor. I ordered some testing products from Amazon to test the Capacitance as well as some resistors to discharge the Capacitors, and tested them all one by one. I found one of the 4700 uF 35V capacitors was bad. So I ordered a new one for $4 from Mouser and replaced it over the weekend. The device now no longer pops and it sounds like brand new. Saved me hundreds of dollars and I now have a working unit again.

So if anyone else is plagued by the POP issue, have a repair person look into the capacitors, or if you have the capabilities to make the repair yourself, look to the capacitors. But a word of warning, Capacitors can be harmful or even fatal if handled improperly. So take the necessary safety precautions before attempting to tinker with the board. All repairs should be done by a certified repair person. I am nearly sharing what I found to be the cause in my own unit.
325866
I only have this sound bar for a few days but so far,  so good.  Sound is very good for a 29 inch bar.  One of my biggest issues is dialogue.  I had problems clearly hearing the dialogue in movies on my previous bar which was quite expensive. Even the clear voice option didn't really do much and dialogue sounded muffled.  This Vizio blows away my previous bar big time. I can now hear what is being said and there is ample bass and treble settings for me as well. It has Bluetooth,  Surround sound and Tru volume which keeps the volume at an even level.  The box contains the Sound Bar, Remote, RCA to 3.5mm Stereo Audio Cable, Digital Coaxial Cable (RCA), Digital Optical Cable (Toslink), Wall Mounts, Quick Start Guide, Sound Bar Power Cable. The rear has the following connections:

Analog Audio Input1x Stereo RCA
Analog Audio Input1x 3.5mm stereo mini jack
Digital Audio Input1x RCA (Coaxial)
Digital Audio Input1x Optical (Toslink)
Subwoofer Output1x RCA
USB Input1x USB (for .WAV Audio Playback)

Overall, I am quite satisfied so far.  If anything changes,  I will update my review.
314140
this is a great sound bar. however their are a few things to know before purchasing. if you have an ARC HDMI output on your tv,  use this for the soundbar. the sound will be much better. also set your tv sound setting to dts neo if you have the option. this will give you the best sound. the bass from the sub isn't gonna blow your walls down,  but if you put the sub in the right spot (like a few inches from a wall with the sub facing the wall) you can get some good bass from it. my biggest dissapointed is the Bluetooth does not sound as good as I expected. you lose quite a bit of clarity and low end using Bluetooth. overall though I'd say this is a good buy
204143
This is a great sound bar. It has an excellent range and superb sound. The sub can be turned off and on which is very convenient. It is a perfect fit for a 60" television. The downside, as to why it did not receive 5 stars from me, is that it has only one HDMI hookup so you cannot run HDMI sound quality from all your HD devices. My Blu-Ray player and television (without the cable box) has to be connected to a lower sound quality port. The remote is temperamental and very hard to read the LED display. Overall it is worth the cost and does provide a theater quality movie experience.
4045014
Great sounding speakers, but had dropout problems when using (2) for true stereo.  Also, output level was moderate.  Quality product that I would purchase again when they fix bugs and have the APP up and running.
1763394
Bought this after I already purchased the VIZIO M55-C2 55-Inch TV and was not happy with the sound from the TV, especially during live sports. When I first mounted this Sound Bar I used the included optical cable, and for several weeks noticed the sound dropping from the rear speakers- it kept cutting in/out. I was about to contact Vizio about this thinking I had a bad speaker or bad speaker cable but I ended up replacing the optical cable with a heavier duty one- issue resolved, sound no longer cuts out
1242078
Overall, it is a great product, but with one major flaw.

PROS:
Super easy setup. You plug in the soundbar, plug in the sub, then turn them on and hit the pair button on the sub to pair the two devices.
Bluetooth is really cool. I have it set up to when I hit he Bluetooth button on the remote, my phone automatically opens to Spotify to start playing music.
The sound is great for the price. Clear sounds from my TV that blow the internal speakers out of the water.

CONS:
The way the inputs are shown is a little odd. They use the volume LEDs on the left side of the soundbar to tell you what input is which with flashing lights. It's hard to tell which input you are at from a distance like the couch or something. So you are just left cycling through the inputs, waiting a couple seconds in between to see if the signal picks up at the correct input.
RIGHT SPEAKER BUZZES when there is a quiet scene in a movie or video game and there is ambiance noise in the background. It's infuriating to hear that when you're focusing on what the characters in a show are saying. It's like the speaker is "popping" or something over and over again every time is reverberates. It happened on the first set I got. I did a replacement with Amazon (super easy A+) and the second one was great for a month, and then started doing it again after the return window passed. It's an extremely annoying noise that drowns out the ambiance or background noise in TV shows and I've resorted to just unplugging it and using my awful TV speakers for the time being.

So yeah, it's a great set of soundbar and sub, but that major flaw makes is a pass for me. Sad too, I really enjoyed this.
4054115
I recently purchased this sound bar after reading the reviews on this site.  Subwoofer works well, providing rich bass.  The sound quality of this little unit was a big improvement over the existing speakers in my LCD TV.  It made viewing much more enjoyable.  The sound bar itself needed adjustments.  I had to modify the mounting bracket to get it to pivot.  That was no big deal.  As some of the reviews indicated, the remote doesn't always work as it should.  I popped off the black speaker cover on the soundbar, and found that the IR sensor on the right side was covered by some spongy material.  I removed it and saw improvement. The remote that comes with the unit is poor.  It did not work smoothly, and often did not work at all.  Unfortunately my cable company uses Atlas OCAP 5-device remotes, and they did not have any codes for this remote.  Through much trial and error I tried 1517 and it worked!  I also saw it listed as 31517 in another spot.  Now I'm very happy with the sound bar.  I found good value for the price of this unit.  Very pleased.
78489
I ordered this item (i.e. Novation Audiohub 2x4) through Amazon. Although the packaging by Amazon of my order was great (the actual product box was placed inside a slightly larger box with air-filled plastic cushions on surrounding the product/item box inside) and the product arrived without any physical dents/scratches or damage, there is something to be said with this Novation product itself.

The PROS: 1) I like that there are three (3) USB ports in this device. I tried each USB port and all worked fine with both my Samson Graphite 49 and Novation SL-MKII midi controller keyboards.
  2) The outputs are indeed loud and utmost care should be taken not to turn the volume knobs to max for the mains, 3rd & 4th RCA outs and headphone monitoring - unless you want to damage your monitor speakers and most importantly your ears (when using headphones).
  3) Sturdy, good quality aluminum chassis - this product is indeed road worthy.

The most annoying CON: Crackles/popping sounds can be heard or are audible from both the main outs, RCA output 1&2, 3&4. This problem persists even when I try to increase the ASIO sample from 64 to 128, 256 and 512. Prior to using the Novation Audiohub, I used a PCI-based M-Audio DELTA 1010LT Audio-MIDI interface card in my AMD Phenom II X4 965 Windows 7-based DAW PC (with 12GB DDR3 1600 RAM, 1TB 7200 RPM HDD x 2 and Sandisk SSDs x 2 to contain my EastWest Quantum Leap-Symphonic Orchestra (Gold Edition), Dimension Pro 1.5, Lounge Lizard EP4 and AAS Strum-GS2 plus other virtual instruments).

  I tried uninstalling the drivers and physically removing my M-Audio DELTA 1010LT from my DAW-PC thinking it might be a conflict with this device, but still this cracking/popping sounds persist. I tried changing the sample/buffer size within each of my virtual instruments and still the problem persists. I tried swapping different audio cables and the problem persists. And I made sure that I disabled the CPU throttle (AMDs Cool n Quiet feature) in the BIOS setting, but still the problem persists.

  The crackles and pops, based on my actual experience, can be heard when using Cakewalk Studio Instruments, EastWest Quantum Leap-Symphonic Orchestra, Dimension Pro 1.5, AAS Lounge Lizard EP4, AAS Strums-GS2 and Pianoteq version 5. Even when listening to audio/mp3, this thing emits audible crackles or pops.

  I'm beginning to think that this unit might either be a lemon or Novation really needs an updated driver or firmware. Please Novation, kindly look into this.

  Ofcourse, my problem is, I reside in the Philippines and it'll be a pain to have this returned. But there might still be hope (fingers-crossed)...as I'm yet to try using this with an iPAD.

UPDATE (12/04/2015): Well I tried installing this in my ASUS ROG G751JL-WH71 (WX) laptop (intel i7 4720 with Intel HM87 chipset) and used the balanced main outputs. I noticed there were no more pops or crackles heard. Tried using it again in my AMD-based DAW PC and there were pops and crackles again. Its possible that the windows driver for this unit may not be compatible or conflicts with AMD-based chipsets/motherboards.

  But because I was able to verify that this unit (Audiohub 2x4) is not a lemon, I'm upgrading this review to four (4) stars. Why only 4 and not 5 stars? Well, the drivers should be updated especially given that the Audiohub 2x4 has been in existence for a year already. May be they can also check driver compatibility with AMD-based laptops or PCs - assuming they have not done so yet.

  Overall, this is still a great audio/usb hub interface from Novation with sturdy build quality.
3350510
This sound bar is amazing.  The two subs however, are not.  They seem to play all sounds and not just lows.  I shouldn't be hearing words through the port in the subwoofer.  I've tried everything to get it to stop and can't figure it out.  So in my opinion, if you're looking for bass, look elsewhere.

EDIT

The support team worked with me and emailed me a custom update for my system that worked out for me.
1357998
This is a great sound bar. Bluetooth works perfectly, sounds is great when using the optical connection and the style is also pretty cool.

It is not that easy to hang if you are trying to do it right.
2139049
The surround speakers have excellent sound quality. The subwoofer has always had a slight, very slight hum. I've had this for about two or three years and play my music and movies at a reasonable level. The subwoofer is prone to bottoming out at higher levels under higher demands. Recently it has been creating a popping noise every 5 minutes or so. The sub just went out and when I plug it into the power outlet alone, unhooked to the AV Tuner, it has a loud audible distortion with significant flex in the cone. All in all the surround sounds great but I thought the sub would be more durable. I replaced the sub with a BIC 12" RTR-EV 1200 and the performance is amazing. It may have been defective from the beginning, I don't know. Circuit City went out of business shortly after I noticed these problems so I could not return it.
83284
Great improvement over tv speakers for watching tv and most movies. But for youtube clips and most if not all music there is an annoying static. Impossible to listen to music in my opinion. I'm not an audio expert picking at minor sound imperfextions...this is a constant static pop. Tried two different optical audio cables in addition to hdmi and rca auxiliary audio cables...that pretty much ruled out bad wires.
3009575
I'm not an audiophile; I just wanted something better than the standard tv speakers. This actually fills my living room with great sound and does a good job with simulated surround sound. If you're looking for a cheap soundbar with decent quality, this is better than that.

The only gripe I have with it after a week of usage is the remote. There doesn't seem to be a way to map this to a universal remote, which is annoying.

I ended up returning this soundbar in exchange for one that I can map the remote to my Logitech Harmony 650. If you're trying to save money and you don't care about adding another remote to your arsenal, it's a good soundbar. I just hate having more than one remote lying around.
4842837
Good picture from my old desktop to my LED television.  The problem is with the sound.  It worked for about a day, then started cracking and popping.  So I plugged my surround sound into the computer jack instead.  Problem solved, but I would have been nice to play through my TV speakers.
3910651
I purchased this sound bar for my Sony Bravia (not from Amazon) so that I can utilize the Bravia Sync function to allow me to use my TV remote to control the sound bar. Everything hooked up easily. After setup I changed it to my cable input and had no audio. My TV has ARC, so I didn't need to use the supplied optical cable. I double checked to make sure my HDMI cable was "high speed"- swapped cables. Still no audio. I paired my phone with the sound bar to ensure the speakers were not DOA- music sounded great. After checking all the settings on the TV and sound bar I still had no audio. I finally came across an online source that talked about issues with the sound bar and TWC/Spectrum customers. The cable box interferes with the ARC/Bravia Sync on the TV/sound bar. The fix is to disable the CEC function on the cable box's HDMI cable by either using a CEC less HDMI adapter or bending up pin 13 on your HDMI cable connecting the TV to the cable box. I did the latter (impatient) using a micro flat head screwdriver and after restarting the sound bar and tv, the audio turned on and automatically sync'd with Bravia Sync. The sound is a vast improvement over the TV speakers. The bass from the subwoofer is clean and strong. I actually had to turn down the bass. The best part is that the sound bar turns on/off and volume controlled by my TV's controller, so the sound bar's controller went into the junk drawer. Please let me know if you have any questions and if this review was helpful. Thank you.
485804
Nice sound bar for the $350 price point. I was not expecting a Digital Dolby 5.1, bass shattering system. The sound bar works well for the intended use. It is loud and the bass is decent...

Update:
Before installing the BOSS audio system, I connected it to power and gave a listen.
My review above reflects my initial thoughts.
An updated review is as follows...
Mounting the unit was a pain, because my cage bars interfered with the brackets.
I had to get very creative to mount the unit. None the less, I will not ding BOSS for that.
This is a universal unit, so it was to be expected.
I was able to securely mount the BRRF40 in my Maverick.

Initially, I was happy with the sound, but after mounting, I was extremely pleased.
After mounting, I did cycle through the different EQ pre-sets. One EQ setting to the next, does make a difference.

I did have the buzz background noise, but resolved 90% of the noise by grounding the speaker unit to the chassis; As opposed to directly coming of the negative battery lead.

Also, I had an issue with a rattling noise, when heavy bass would kick in.
The issue resolved itself after the unit was securely mounted into my side by side.

As of 3/14/2017, the least expensive BRRF40 unit, is selling for $387, on Amazon.
The next price point for the same unit is $454.
I paid $350 for a used unity, that comes with the same warranty as new.
So, I am more than happy to have got a good deal.
All in all, this is a good audio system for the money.