I don't usually leave reviews, but considering how pleased I've been with this product and how often I use it, I'd like to give er a boost. I've been a busker for over ten years now, and until now I - like probably 90% of other buskers - used Roland/Boss products like the Cube Street and its big brother, the Cube Street EX. This amp handily beats the Cube Street in nearly all categories for $150 less and holds its own against the EX, for nearly $400 less.PROS:- Sound quality. Sounds grand for what it is. Plug in a mic and an acoustic guitar, and you'll get a sound that's surprisingly faithful to the source. Much better than the smaller (Boss) Cube. Playing back music via Bluetooth will give you a good idea of what you're working with - it's quite mid-rangey, like most smaller amps, and not particularly detailed, but with a fairly solid, only slightly muddled low-mid end, and a nice bit of "oomph". The top end isn't anything special. If an airy, modern-sounding top end on your vocals is a must, the Cube Street EX does a better job at that & might be worth the extra cash.- Loudness. I was wavering between this amp and the bigger version, the BP60D, but I'm glad I picked this one as it's a lot more portable and plenty loud. I've yet to have any need to go beyond about 12 o' clock on the master volume knob, and around 10 o' clock is where I'm usually at for outdoor settings like farmers markets where you're not trying to be overpowering.- The battery. Unlike the Roland/Boss amps, which use AA batteries, this one is actually rechargeable - and it lasts substantially longer. I used rechargeable AAs for my Cubes, but that's an extra cost and it was a hassle having to pull out the batteries, charge them, and put them back in every time.- Bluetooth for playing tunes off your phone or karaoke/backing tracks. The Cubes have an aux in, but that means carrying an aux cable (and a lightning adapter if you're using an iPhone).- The USB socket is powered, meaning you can use it to charge your phone, or even better, power your guitar pedals with up to 800mA of power (if you buy a USB to 9V center negative cable).- Phantom power. Admittedly not something that's going to see a lot of use in most live settings, but fancy to have.- Output. 80W in this tiny box, compared with 50W for the EX and 10W for the Boss Cube.- Portability. It's much smaller than the EX and packs about as much punch.- Inputs. Two microphone inputs and two instrument inputs, as well as a basic line-in and the bluetooth connection makes for six channels, comparable with the Cube Street EX and far outperforming the smaller Boss option, which has only two inputs.CONS:- NO ELECTRIC GUITAR AMP MODELING! And the gain is clean, you won't get any overdriven/distorted sounds out of this. You could get around this (and get a sound much better than Roland's COSM) by using a modeling pedal like the Strymon Iridium or one of the UAFX amp pedals. But if you want electric guitar amp modeling in the box, Roland is still the way to go.- No onboard effects aside from EQ/Reverb, and the reverb sounds like arse. However, you can always get your effects thru pedals powered by the USB port or a rechargeable pedal power supply.- Default EQ balance - on acoustic guitar I've found it's actually a touch too bassy - I tend to dial it back to about 10 o' clock to keep it under control. But usually smaller amps have the opposite problem, eh?- (Possibly) Build quality. The sides aren't wood or plastic, but some sort of composite board material. It's not terribly substantial. If you remove a screw, some of the material will come out with it. And you're going to want to be careful with rain, if playing outdoors. I was careless and let mine get pretty damp a few times, and after one particularly wet session it wouldn't power on anymore. That was obv on me, and I was ready to purchase a new unit, but I figured I'd take it apart and see if I could repair it. It disassembles easily and the electronics are straightforward enough. The problem turned out to be the power switch, which went tits up for whatever reason. I was able to replace it with a cheap generic rocker switch for about $5. But obviously not everyone's gonna be able to troubleshoot that sorta thing. I couldn't say whether this component is a weak part, whether there's other weak components or whether I just got unlucky, but you might want to pay the $35 extra for a 3-year warranty if you plan to use this amp a lot.All in all, I'm betting this company will be a nice kick up the arse to Roland to start upgrading their line. It was only a matter of time before there was some more competition in this field, considering how much better both battery technology and the sound quality of portable speakers have been getting. If you were thinking about getting a Boss Cube Street and you don't need FX or amp modeling, get this one instead. And if you were thinking about getting a Roland Cube Street EX, I'd seriously consider this lil amp as a solid alternative. If you need an affordable live monitor, this'll do great. If you're very quality-focused and have $700 to spend, I'd consider the Bose S1 Pro+ as one of the only clear upgrades out there.