With this list I want to show you my personal favorite portable speakers that I use on a regular basis including some explanation why I have chosen them over some others and when I use this instead of that. Its been quite a long time I wanted to prepare a kind of best-of list of all portable speakers I know or that I have heard. But after having heard so many, I thought that a real best-of is simply not doable as each speaker has its own strengths or weaknesses. After all those years it seemed I would still not be able to find a single speaker which would satisfy all my needs not until I have heard the new Denon Envaya Mini, which mixed up my whole perspective and made my whole list until now pretty useless. The Denon Envaya Mini finally persuaded me to sell all other speakers I currently own, including JBL Charge 2, Fugoo, Sony SRS-X3 etc. Therefore I would like to present *drum roll* the Denon Envaya Mini as my current favorite portable speaker.
As it had already taken me some time to prepare this whole list, I will nevertheless add all the other speakers below, although I probably wouldnt consider them at all anymore. Please let me clarify that my main goal is high audio quality. Most will have probably noticed that I have a weekness for a full-bodied sound. There must be at least some base for the music with enough bass to make it sound satisfying, otherwise I cannot enjoy music and prefer not to listen at all. I dont care about speakers that can play screamingly loud but fail completely at lower levels, or speakers with tons of nice features that only sound like my old clock radio.
Denon Envaya Mini
Buy it from amazon.com amazon.co.uk or amazon.de
I doubt there is any better sounding speaker available that small right now, therefore the Denon Envaya Mini gets my first vote to become the overall "winner". It is extremely portable, splash water resistant and has a professionally close to hifi tuned sound. It is not the loudest speaker nor the one with the biggest bass, but it sounds as close to flat as possible at that size with full bass response down to 80hz which appears even deeper thanks to some psychoacoustic algorithms. There is some stereo separation and the Envaya Mini sounds perfect at low and at highest levels with hardly any distortion or dynamics compression at all. It should satisfy 70% of most needs, just if you need higher loudness, you will probably wish for something more powerful, this is where my Infinity One jumps in, which you can find next in this list below.
Another alternative to the Envaya Mini would be the the JBL Charge 2. Until I heard the Denon, JBL Charge 2 might have been close to a "near-perfect" portable speaker, but unfortunately JBL managed to screw it up making it unsable at low levels and unlistenable with many tracks because they cause noticeable distortion, otherwise the JBL Charge 2 would probably be the best sounding speaker in its class that I would recommend over all the others more or less on par or above the Denon. I feel still so sorry about all the issues it suffers from, and that JBL doesnt really care to offer any fix. It seems they just recently started to sell a new batch of devices, which dont suffer from any distortion, although they still seem to have some issues at lower levels. Apart from that I also hate the status tones the JBL Charge 2 will play if you turn it on, or when it will connect to a device. The tones are so annoying that you cannot even turn it on in a silent enviroment. The JBL Charge 2 is not usable at low levels, it will sound just poor with bass sounding strange and with additional artefacts noticeable during the first 4-5 volume steps. I usually welcome a mirrored volume control between speaker and device, but in case of the JBL Charge 2 the volume steps are very rough and the speaker becomes too loud too quickly. The JBL Charge 2 has pretty non directional treble response. It still sounds quite good from above or from the side unlike most other similar speakers. I also like the fact that the JBL Charge 2 will retain more bass and sound more dynamic than most other competing models. Even at maximum volume you will be able to hear every drum-kick attack, while the Bose Soundlink Mini or the Sony SRS-X3 will compress them away. Sometimes I would prefer it even louder, especially outdoors, thats why I finally settled for an Infinity One described below.
Other speakers in this smaller class worth having a deeper look: I really liked the Fugoo a lot as an all around speaker but also for use at home from room to room etc. It might not be a very loud speaker and bass could take some stronger punch, but it is small enough to be carried around and thanks to its "jackets" is rugged to be just tossed inside some bag or stuffed inside a jacket pocket without any additional protection or pouch needed. Unfortunately none of the jackets does have any clip-on option without the additional mount-pack. It would have been great if Fugoo had included some simple lug in any of the jackets, so that the speaker could be quickly clipped on somewhere. The Fugoo is also one of the few speakers that really withstands a complete submerge under water, it is not just splash resistant like many others, but entirely waterproof.
Bluetooth connectivity is great and the Fugoo connects automatically to any found device unlike most other speakers, which seem to be still waiting for the latest one.
I also like the fact that the Fugoo remains nearly silent during operation if all voice prompts are disabled. Overall the sound of the Fugoo is quite full-bodied, it is not overly bloated but pleasant to listen to, with a similar bass-amount to many larger speakers like Soundblaster Roar etc, although the sound starts falling apart a little bit above half volume which is not very loud and does not come close to the sound of the Denon Envaya Mini, which is much more serious, and much louder at the same time. If the Fugoo was slightly louder overall with slightly more bass, it would be definitely on my top list if I had to pick just one single speaker, but now the Denon Envaya Mini took this honour and the Fugoo has to go. Another strong contender loved by ones, hated by others is the Bose Soundlink Miniwhich has no problems like the JBL Charge 2, but I found the sound to be too muffled and too directional and sometimes too boomy. The Sony SRS-X3 might be another worthy alternative and I think it sounds best for low volume listening, especially because you can fine-tune the final bass amount with the input-volume of your streaming device, a welcome side effect of the dynamic sound-processing, which becomes confused with lower input levels and dials bass back, because the speaker output needs to be raised. The X3 has some problems at higher volume levels though and battery life is not as stable, especially when cranked. Unfortunately both Sony and Bose play some kind of annoying tones if they are either turned on/off or if they establish a Bluetooth connection. Another alternative might be the Bose Soundlink Colour. The sound is not as mature or not as refined as of all the others, but it is nevertheless a pretty solid speaker with a nicely tuned sound for all volume levels. It will sound good at low and at high levels, without any side-effects or artefacts. Treble is less directional than that from the Soundlink Mini and the Soundlink Colour will not sound that boomy in most cases although mid-bass has quite an obvious boost with some stronger resonance, which can start sounding annyoing with some particular tracks. Also Bluetooth connectivity is one of the best I had experienced so far with automatic reconnection to 2 previous devices after power on, just dont expect any stereo sound as the Soundlink Colour is rather a stereo speaker with mono sound.
Infinity One
Still only available from amazon.com, funnily the Infinity One does not sound really that much better than the Denon Envaya Mini, the Infinity Ones sound is just more powerful, which is not surprising given the size being 3 times as large. the Infinity One is basically a blown up JBL Charge 2. The sound is similar between both, with the Infinity One just sounding more blown up. The Infinity One is a bit too large and heavy to be carried around whole the time. But if you know that you will need a portable speaker which manages to deliver enough power at higher levels too, the Infinity One might be the best choice. When the Denon Envaya Mini is already at its top volume, resulting in some heavy bass-loss, although perfectly usable without any distortion, the Infinity One will still have enough headroom, although the Infinity One will suffer from some intermodulation distortion at these higher settings, but the Infinity One will be able to keep much more bass at comparable loudness settings and maximum volume should still be loud enough for any smaller outdoor event. The stronger intermodulation distortion at high levels is the biggest letdown of the Infinity One, it sounds more enforced than the Soundlink III and many bass-heavy tracks may start sounding really harsh because of this, while others might still sound perfect, Infinity should have added some simple tweeters to the front drivers, as the back drivers sound pretty clear as they are fitered for higher frequencies, where intermodlation becomes most obvious. Similar to the JBL Charge 2 the Infinity One will also manage to retain the dynamics of kickdrum attacks, unlike the Soundlink III, which will rather iron out any stronger punches. For house-music I would prefer the Infinity One over the Soundlink III, which might be better for Jazz and acoustic stuff due to less intermodulation distortion problems.
Unfortunately the Infinity One has the same loud status tones and the same mirrored volume control with even rougher steps than the JBL Charge. In case of an iOS device the volume control is not fine enough to really allow any sensitive adjustment. Thank godness the Infinity One does not suffer from any of the processing artefacts which plague the JBL Charge 2. I think that the Infinity One delivers the best performance of all speakers I have tested in this larger speaker-class aroung 1kg, including Bose Soundlink III, Beats Pill XL, TDK A34, Loewe Speaker2go and even the B&O Beoplay A2, which has its own qualities and problems, thus as total package I just regard the Infinity One as the best option right now.
A big problem for all non U.S citicens might be that the Infinity One is only offered in the U.S so you will have to import it on your own if you live outside, which is what I finally did. But for casual listening at home I prefer the Denon most of the time, even though it has slightly less bass, it sounds more natural with more stereo separation and is much easier to carry around.
Other possible alternatives: Bose Soundlink III sounds quite similar to the Infinity One, but has a more directional and more "edgy" sound while the Infinity One sounds rounder and more open. The Infinity One also has the option to be charged through USB in case of need and it can charge external devices too. Overall I prefer the Infinity One over the Bose Soundlink III, although the Bose has the better tuning for low levels with a more profound sound and obvious intermodulation distortion should be less of an issue. Other alternatives might be the TDK A33 which is pretty cheap now or the newer A34 as both are pretty balanced sounding speakers unfortunately with a pretty bad battery and a questionable charging logic. I never manged to make the A33 play for longer than 6 hours even at lower levels, the A34 seems to suffer from the same problem. The Soundblaster Roar is very similar to the TDK A33 in sound but has tons of additional features which you might need or not need. It doesnt play as loud as the TDK, but overall it is the better speaker I think. It doesnt sound as full bodied as the Infinity One or the JBL Charge 2, but the sound is still quite nice, although it wont knock your socks off.
You might also like the Denon Envaya which sounds quite similar to the Bose Soundlink III although not quite as loud but also cheaper. The B&O Beoplay A2 would have been my personal favorite if battery life was more predictable and the sound more constant on higher levels. I really like the design and sound tuning is simply impressive, but I couldnt live with the added distortion on many tracks especially at the given price being one of the most expensive speakers shown here. I would also like to add the Beats Pill XL, which is not a very good sounding speaker per se, but a very powerful one with great features, wireless stereo pairing etc. It is still one of the loudest I have heard at this size and manages to sound pretty controlled when the others are already struggling or reaching their limits with the Pill XL still being much louder than all of them.
Bose Soundlink Wireless Music System 
Although I currently dont use it that much, I still think that this old and discontinued Bose system is a spectacular and underrated portable Bluetooth speaker. It is based on the Bose Sounddock portable which was also discontinued in the meantime but with Bluetooth instead of the Apple-dock.
Thanks to its flat design it is still pretty portable despite being larger than the Infinity One and with just 2kg including the swappable battery it should find its place inside any even smaller rucksack. The Bose Soundlink Wireless Music System is one of the most powerful systems at this size. The amplifier delivers 40Watts (unlike the 25W of the Infinity One), and thanks to Boses DSP processing they manage to push the loudness level quite above the limits of what the 2 fullrange drivers are able to handle by applying some stronger dynamics compression and dialing bass back. Although there is some stronger distortion at maximum volume the Soundlink Wireless Music System nevertheless manages to fill a large outdoor area with sound if you dont want to carry any larger boombox with you. It sounds very full bodied with the deepest reaching bass although it has a tendency to sound a bit muffled, especially at lower levels and off-axis.
A possible alternative might be the IK Multimedia iLoud, which is able to reach a similar loudness, but not without distortion either. Unfortunately the iLoud wont sound that full-bodied at lower levels and the built in battery seems to have some issues not being able to hold a charge after some time of usage according to my friend who had used his quite often.
Another interesting speaker might be the Harman Kardon Onyx or the much cheaper Onyx Studio which omits auxiliary input, Airplay and DLNA compared to the expensive version. They sound slightly better and are more powerful than the Bose, but are a bit lacking at lower volumes. They are also larger and not that easily portable with the battery life hardly exceeding 4-5 hours at high volumes.
If you need still more power and more loudness, you must have a look at all the larger systems like the Klipsch KMC-3 or some Pioneer Steez units or the JVC Kaboom series etc. But nearly all of them need extra batteries for portable use and will quickly exceed several kilos of weight. Maybe the new Teufel Boomster could do the trick as it has a built in battery which can be even extended by some additional AA-cells. So far I didnt feel the need for such a unit, it is just overkill for home use, I previously had the Altec Lansing IMT800, but didnt use it much because of the size and the hassle with batteries. But my friend loves his KMC-3 and uses it regularly for outdoor parties with friends.
What is still completely missing though are speakers that can be easily put inside a pocket, or attached somewhere thanks to a dedicated clip or carabiner without adding any bulk or becoming tedious. Most of these I have tried so far sound rather tinny, not really comparable to those above, although I am sure with some clever DSP processing and really high-quality drivers even smaller speakers than the Denon Envaya Mini could be brought to respectable output. Here are my best findings for this class:
TDK A12
I think the TDK A12 (micro Trek) produces quite a balanced sound for being that small. It is not the loudest speaker at this size, but it just sounds "right". There is some upper bass which makes it sound appealing, but the TDK is not able to produce any deeper bass, thus it is not really full-bodied and quite a bit too thin for my own taste, but still better than not having a speaker at all. If you put it flat on some resonating surface, you can boost basst slightly, but the passive radiator doesnt really play anything below 100Hz, so dont expect any miracles like with many other vibrating speakers or like with the FoxL Dash 7 that are tuned much lower, but wont produce any hearable bass until they suddenly sound much more mature depending on the surface they are placed on, as shown in my example video for the FoxL Dash 7. Unfortunately most of the time there are no suitable surfaces around outdoors for enhancing the sound.
Therefore the TDK seems to apply some "virtual bass" algorithm. It sounds a bit as if the lower frequencies not reproducable with the tiny driver were subtly added transposed one octave higher (similar to what MaxxBass is doing). The A12 manges to give an even more full-bodied impression than the similar JBL Clip, although bass reaches considerably lower on the JBL Clip, when looking solely at the frequency response measurements. There is also some bass compression going on, maybe a side-effect of the virtual bass algorithm, but when directly compared it is quite noticeable that the TDK does some processing, which is not a bad thing, as any unwanted artefacts are still kept to the minimum.
The TDK A12 has no distortion even at maximum volume, but there seems to be some sample variation as I have tested several different units and on many of them the passive radiators started to rattle heavily at higher volume levels with bass heavy tracks, the resonance-frequency seems to be around 125Hz where rattling is strongest. Because of the single passive radiator at the back side the TDK A12 also has a tendency to vibrate or even creep around when put on certain surfaces. If you attach the included carabiner, this may rattle against the body at higher loudness-levels, thats the drawback of single passive radiator designs.
Battery life is somewhat short, especially at high volume. A nice feature is that you can pair 2 of them for true wireless stereo, in fact I have 2 of them and both cost me less than 60€. Strangely stereo pairing doesnt work that well sometimes. I am not sure if this is the speakers fault, or if the Bluetooth connection of the iPhone is too blame here, but sometimes when in wireless stereo mode the audio quality is reduced considerably resulting in a sound which resembles that of a lower bitrate mp3-file. Sometimes only one will play, although both confirmed the connection. I have not found any regularity, but in case they behave unexpectedly, I have to go through the entire pairing process again to get rid of it.
Other similar speakers to consider: JBL Clip produces a similar overall sound but can play quite a bit louder. The JBL Clip can be daisy chained with another one with its built-in wire and it has speaker phone included. Due to its rounded design it is easier to put inside a pocket and the carabiner is already built in unlike with the TDK A12, which has the carabiner separate. The battery life of the JBL Clip seems to be even shorter than that of the TDK A12 though, but due to the included bassreflex port instead of the passive radiator the JBL Clip wont vibrate even at highest loudness levels.
I would regard the Mini Jambox as another alternative, although nothing special it is still able to deliver quite a solid sound and will also sound rounder and more full-bodied than both the TDK and JBL, although the maximum possible volume is quite limited. I have yet to find any better sounding speaker that small. Most of them might be louder for sure, but they just dont sound good at normal listening levels. Of course I welcome any other tips!
3 years ago it was still unheard of a beverage can-sized speaker that it would be able to produce any bass down to 60Hz. After the Soundlink Mini which was pretty unique at the time of its release there are meanwhile some other alternatives available. The portable speaker market is evolving pretty quickly. So please just take this personal list as some temporary snapshot which may suddenly turn around with any new speaker released, just like it did, when I heard the Devnon Envaya Mini.
There are some interesting speakers on the horizon like the electrostatic BenQ treVolo (formerly known as eVolo) or the Massfidelity Core, there is also some rumor about an upcoming larger and more powerful speaker from Fugoo, but I am not sure if I will be able to receive any of those units for a review. As soon as I can get my hands onto something interesting I will let you know.
