A Great Value Portable Bluetooth Speaker with Excellent Battery Life
356734
I won this speaker (in the aqua blue color) at iOSDevCamp, a software and hardware developer hackathon. Antec was there as a sponsor, and donated several of these. (Thank you!)

Since the introduction of Jawbone's JAMBOX, there are now a lot of competitors in this space. The JAMBOX wins in industrial design and build quality. The a.m.p SP1, though, is a very nice Bluetooth speaker  especially given its low price  one half to one third of other models.

The housing is high-quality plastic, with a rugged, rubberized skin. When you turn it on, you'll hear a cute startup tone sequence. Similarly, pairing and shutdown have pleasant musical signatures that indicate status.

Sound quality is on par with similarly-sized portable Bluetooth speakers. Well-designed speakers have a nice heft and enclosure design that contributes to sound quality. The SP1 succeeds in this regard.

I've also used this for conference calls, and found it to work well.

Finally, battery life is excellent  and you can use the SP1 while it's charging, if the battery is low.
356884
For the size and price, this is the best Bluetooth speaker available. My brother has a Bluetooth Jawbone speaker that he paid $80 for. This one destroyed his. The circumference is actually a little smaller than a soda can and much shorter. The sound is pretty amazing and only slightly struggles with base when the volume is at max.

Pairing is simple enough if you're used to that sort of thing. It also has a headphone jack incase you have a device that doesn't have Bluetooth, like most computers. From my use I can get between 5 and 6 hours of music time.

The materials feel premium but can be slippery so be careful when handling it. I've dropped it too many times but fortunately is made well so it just keeps working.

Not much else to say except I highly recommend this mini 808 CANZ speaker to anyone wanting a travel size bluetooth speaker that can deliver in sound volume and is built well.
2329333
Quick take:
  -10 hours of sound off battery is excellent!
  -Small and portable, good design
  -Simple and elegant controls work well
  -Comes with all the cables needed
  -Many features for this price range (NFC, Mike and phone toggle, audio in)
  -No charger included (but who doesn't have one?)

This small (6.75 x 2.5 x 2.5 inches) speaker comes with everything needed,assuming you already have a USB port or charger handy (as most will). It includes the USB cable and a 3.5mm audio cable. The included instructions are abysmal as others have noted, but the basic info is all there. Still, clear if you already know what you need to do, will leave you clueless if you do not. But since it works the same as every other bluetooth speaker, should not be a problem for most. Still, a shame at this price and from a manufacturer like Dell.

All the basics are covered in the confusing documentation if you can figure it out and understand that a little watch with "2S" means press the bluetooth button for two seconds to pair. However, it paired easily and the controls work well and have a nice feel. There are lights for power and bluetooth signal which is all you need. Overall it's simple and elegant.

The sound is OK, if not spectacular. It's about average for this price range. There is bass and percussion, decent mids and highs, but the overall presence is a bit off as others have noted. Sounds aren't as distinct as with better speakers and I noticed some harmonic distortion. That said, it's not too bad and certainly fine for casual use. I think most people would find it satisfactory (I'm fairly critical).  Put it on a solid surface and 3-6 feet away for best results (IMHO).

The volume is plenty for personal use, but not up to "boom box" levels. The unit is small for a stereo unit, feels well made, and the controls are easy to use. The big win here is that the battery life, at around 10 hours, is more than most speakers in this category. That's a true full day of listening, or many days if you're listening just a few hours per day. This would make a good tablet or phone companion.  Using an A/C wall charger rated at 1 amp, I was able to play music and charge at the same time.

If you use the audio equalizer on your tablet or phone to tweak the sound, I think you could improve the overall sound a bit, but even straight it's good enough for casual listening. So a nice unit, simple, but good design, acceptable sound, elegant controls, NFC and phone features, there's a lot here to like, but to me the overall package and value is just "OK" at this price point.  If it were around 40 bucks, I'd say great (4 stars), but at current prices, I say "just OK" (3 stars), however, the excellent 10 hour battery life is a big plus and pushes it up to 3.5 to 4 stars, so 4 stars it is.
2797175
The TDK A-34 is an incredible unit that performs well within it's price range of $149.00. This is a well made, sturdy, reliable speaker that offers excellent sound and is perfect for mobile users.
I'm not an audio engineer like most of the other reviewers but I've been using my ears for a few years now and they like what they hear from this little speaker. Pairing is easy with my devices and the power button works fine with a short push for on and off. I've gotten 6-7 solid hours on the battery with no interruption in performance.
It's worth the $$ and if you want big sound from a small speaker, you'll most probably enjoy it.
2448395
These speakers are surprisingly good! I bought the blue model (true to color displayed on Amazon) about 1-2 months ago for $50. It seems that the price has increased to $69.99 recently.

Sound:
The Indierocker has a very nice sound to it when playing through Bluetooth. I'm currently using it with my Verizon LG G2 and everything sounds just as it should. I play all kinds of files ranging from mp3 to lossless and (for the most part) the speaker plays my music true to its sound. This little speaker can get very bass heavy, though. So bass heavy that the thing starts to crawl on its own from the vibrations (so I suggest not placing it near an edge). The highs also sound great. It does lack a little bit on the mids and the music can sometimes feel somewhat scooped or "empty."
For its size, it's not the loudest speaker considering it is a medium/medium big bluetooth speaker. It can easily fill a 12 sq. ft. x 12 sq. ft. room but might not be loud enough in a really loud outdoor environment. On its loudest volume, though, you can start to hear some distortion, but not too much as to cut your ears off.

Build:
The case is sturdy and has a smooth, rubbery feel to it. It looks like it can probably take a few low height drops without any damage but I'm not quite ready to start dropping this thing off my table.

Functionality:
The controls are placed in comfortable positions with an on/off switch, charge port and AUX receiver on the side and volume up/down, play/pause and call receive/reject on the front. On the blue model, the blue Bluetooth light is slightly hard to see when the device has successfully paired (especially when outdoors). The pairing process is simple and successful most of the time.
The battery life on this thing is AMAZING. Within the first month I used it for an hour, 3 times a week, and my parents had used it as well. I haven't used it as much as I did in my first month but so far I've only had to charge it once. I'd estimate it handled about 12-14 hours on battery before it needed a charge. Lastly, the speaker doesn't handle Bluetooth distance very well. At 20-25ft outdoors, my music will start to cut in and out. I've used other speakers within the same price range that can handle more distance than this. It gets worse if there is an object (such as a wall) in between the speaker and the phone.

Overall, this speaker is great! It's not too big, not too small and is comfortable to carry around. I consider the sound to be very good for the price I paid ($50). I would want to do more comparative research, though, if I were to consider buying it at $70. But I think it can hold up against the competition.
2063070
I wasn't sure what to expect when I ordered this speaker but I can tell you that I have been very impressed.  The battery life is outstanding (lasting 8-10 hours with moderate use) and the sound quality is good.  I am sure there are better sounding bluetooth speakers but I bought this primarily to replace my iPhone as a music player.  This little speaker sounds much better than a standard phone speaker and is much louder.  I have been very pleased with the purchase.
4250113
This is a great little speaker, very portable, easily fits in the palm of your hand. Very loud for it's size and pretty good sound quality even when turned all the way up. I love that it is reasonably weather proof and have used it to make the sideline of my frisbee games into a little party even in bad weather.

The battery life is respectable, I had it turned up all the way playing music over bluetooth for about 3.5 hours nonstop at a tailgate before it started to beep low battery at me (I am not 100% sure it was fully charged when I got it out either).

It is very easy to connect to. Over the course of the tailgate I had 4 different phone connect to it, both Android and Iphones without any difficultly.
2879020
The JBL Flip 3 is perfect for what I bought it for: a wireless portable excellent speaker. I would give it 5 stars, but it does pick up phone activity, like texting keystrokes. This is my first Bluetooth speaker, so I have nothing to compare it to, but I really like the sound coming out of this tiny portable speaker. Bass is strong, maybe too strong, but if you move it further away, the bass is perfect. I wish the battery life was longer than 10 hours. JBL description of their product is pretty accurate. JBL is not selling you something other than what they say it is. Good product for the price range. I'm very happy with my purchase.
2904447
For under $50 this is easily one of the best Bluetooth speakers i have ever tried out and i have tried many, this amazing little box is able to keep up with some $200 Bluetooth speakers i have tried. SoundBot easily put out an amazing product with this device and this has quickly become one of my go to Bluetooth Speakers.

The biggest positives this speaker boasts include but are not limited too: the audio Quality is easily better than the UE mini Boom ($99 retail), but can't surpass the UE Boom ($200 retail) i would place it somewhere in-between them both, the Bass output on this speaker is outstanding and one of the better bass outputs from the Bluetooth speakers i have played with, the battery life can get up to 12-16 hours on one charge which is a little better than i have had from most speakers. The case is very sturdy being made out of Stainless Steel, this is one of the most solidly constructed  speakers i have had the pleasure of owning

The only negative things i have found in my months of testing:  The audio is better when it is directly plugged into the speaker using the cables that come with the device, also the audio volume while in Bluetooth mode will not be able to compare to every speaker on the market but it easily beats out every other speaker at this price point or lower that i have tried, about the weirdest thing i have run into though is if this speaker is plugged in and charging and it is directly plugged into an audio device (Phone/ Ipod), and that device is charging as well, it created a feedback noise every time, so you really should used the Bluetooth if both devices need charging.

Ultimately the few shortcomings can not take away from the quality for the cost of the Sb520, and surprisingly one of its shortcomings, the volume level while using the Bluetooth connection has actually made it the ideal speaker for my workplace, as at its loudest setting it is not loud enough to distract from me or my fellow employees from doing our jobs and has been enough to impress fellow coworkers to go out and purchase one of their own, and they like me are very snobish when it comes to our Bluetooth accessories, and if that is not enough of a glowing recommendation i don't know what is
4903550
This is a reliable speaker and speakerphone.  It connected quickly and easily with every Bluetooth device I've tried, both in single user and Heist mode.  I haven't been able to disconnect a device from the speaker at any distance inside my house, even around corners.  It's fairly easy to use, with assorted informative tones and some spoken word information (for example, a spoken report of remaining battery life when it is turned on, or of the mode used when switching between indoor and outdoor mode.)

The battery charges quickly and lasts quite a while, which in my case is a very good thing because I've misplaced the proprietary charger.  While there is a USB-sized port on the back, it is covered by a rubber plug which does not seem to be removable.  Since so many other devices charge via USB, a USB port would make this easier to charge.

Sound quality from this speaker is not what I'd hoped for.  Midrange is clear and crisp, especially when sitting very near the speaker.  Bass response is a little weak.  The high end is a bit sharp and dry, and sometimes a little annoying.  It's mostly good enough, and if the speaker weren't in the $150 range I'd be very satisfied with with the sound quality.  While improved sound quality would probably increase the weight of the speaker, since it's only about 13.5 ounces I'd gladly take a few extra ounces for a fuller low end sound.

The speaker connects easily to multiple devices and remains connected at impressive distances, charges quickly and has very good battery life.  The proprietary charger is an inconvenience.  Sound quality is OK, and would probably be good for a lot of people.  I like it, but this is not my favorite speaker.
3901631
This Bluetooth speaker system provides stunningly good sound for a very reasonable price.  The setup is extremely simple with any source device and the results are astonishing.  The frequency spectrum is well-balanced, with extended highs, smooth midrange, and rich, powerful bass.  The internal rechargeable battery supplies power for approximately ten hours and the unit is very portable and lightweight (without feeling fragile or insubstantial).  One of the most surprising traits of this loudspeaker system is its ability to provide a very credible stereo image.  Admittedly, you must sit fairly close, but the separation of sounds within the stereo spread is both believable and rock solid.  This small but powerful speaker is equally adept at taking music and movie dialog and soundtrack to much higher levels than internal speakers found in phones, laptops, tablets, or even desktop speakers.  Highly recommended for anyone who values good sound either at home or on the road.
554337
Portable NFC Waterproof Super Bass Resonance Bluetooth Wireless Speaker With Power Bank Review.

Positives:
Sound quality is excellent.  Good bass and loud enough to fill a room in your house.
Bluetooth connection is solid within 20-30 feet.  Tends to drop out of going through a couple walls.
Rugged design.  I really like the rubber cover.  Helps protect the speaker in case of dropping.
Aux 3.5mm input.  Excellent if your player doesn't have bluetooth.
Ability to charge your USB devices.
Good customer service.  They replaced my speaker when it stopped holding a charge after three months.

Negatives:
Battery life.  Only three months after purchase, the battery wouldn't hold a charge for more than 2 hours of playtime, but the company did replace it.
508682
This is a terrific Bluetooth speaker. Note, however, that it is no longer being made and some features (like the Samsung app. that manual references) are no longer available. I use it with my iPod, and - unlike other Bluetooth speakers I've tried - the connection is strong and consistent. Typically I use it outdoors, and it's loud enough to be easily heard over traffic and other noises. The sound is good, but the bass is somewhat muddled. It would be helpful to be able to adjust the bass and treble, but such features are hard to find in inexpensive portable speaker. Setup and pairing were a breeze.
331666
Long lasting battery, great sound, decent bluetooth range.
1453013
I'm not a tech guy and sometimes simple bluetooth pairings seem to go awry, but this portable speaker paired flawlessly to my Android phone and immediately produced excellent quality sound, easy to control, in a water resistant case.  After five hours of play, I'm down to 2 bars out of 5, so battery life should easily be several hours.  This isn't a micro speaker, so it produces decent low end sound.  It also has grippy feet that almost feel magnetic on glass and counter top surfaces.  Very stable and very high quality speaker.
2002182
I'm really pleased with this purchase. The sound quality is extremely impressive for the size and likely matches that of Bluetooth speakers 3-4 times the cost. It's a really strong choice to bring to parties on a back deck or to carry with you to the beach. Your friends will be amazed at the volume and sound clarity from such tiny speakers (mine were). And the price!

Pros:
Small size
Rich sound quality for such small speakers (good highs and mids, fine bass)
Small and extremely portable
Gets LOUD for the size
Nice packaging and comes with flat wire 1/8" mini headphone cord (male/male)

Cons:
Short Bluetooth range (5-10 feet unobstructed, 3-4 feet obstructed, i.e. you must put your phone down on a table nearby)
Won't play while charging
3441270
So far, I've been very impressed with this speaker. I've used it in wet conditions, conditions in which there is a decent amount of background noise and in situations in which I've switched between several Bluetooth devices, all without issue. The bass level of this speaker is phenomenal for its size and cost. My only complaint, and I mean ONLY is that the mids are sometimes off a little in certain music genres, specifically twangy country music. Battery life is excellent. Portability is excellent. Connectivity is excellent. User interface (button operation) is excellent and straightforward. Water-tight capability is accurate and it does exactly what it says it can do.