Feature:
All in one package including the footpedal with a REALLY long cord. All the features I want with an easy to use/read interface.

Quality:
Those factory castors suck. I removed the rubber feet from the bottom and put on my own 2" casters on all four corners. Some carpet is coming off some of the rear panels, but build/fit and finish quality seems to be pretty good.

Value:
If you want to perform with this amp combo, I'd strongly recommend getting your sound guy to add you to the on-stage mix, and add a little more for the "house"

Desirability:
Good value for the price I paid

Sound:
My previous combo amp was the Hartke 1155 combo with a single 15" and 5" tweeter and so I was skeptical about going with the 2 X 10" config. - as I play with a 5-string. The sound of the lower freqs sing thru and the funky slap/pop stuff sounds amazinging well. However....I have repaired the drivers. What sounded like a blown speaker was actually the aluminum torn from the surround - fixed(professionally) with a special epoxy. The Bugera speakers (aluminum) suck, I'd retrofit their papre coned 10s instead

Ease of Use:
Literally a plug and play.

Support:
I want to add additional spkr cabs, but their spec sheet is not accurate/helpful, nor is their manual helpful. I've registered on line with them to get specific info on adding cabs, but so far their tech guy said I need to disconnect the internal speakers first (WTF???) I want to keep those running AND add another one. (This is so that I don't have to force the speakers/amp to work as hard)

Overall:
I'm a performing bassist for a 5-piece r&b/blues band who's on astrict budget. This combos seems to be worth the coin I paid for it. However...if a good quality seprarate head and cabinet comes my way, this one will no longer be my main rig.

Feature:
the features are about average. it comes with a pedal which is usefull.

Quality:
the amp is pretty sturdy but the speakers suck!!! one blew (at half volume)and so i tried to keep using it (at a low volume) but the other speaker blew too. now i am having to replace the speakers. (i will be using carvin, since they are actually dependable)

Value:
it is worth the money as long as you get the warranty. if you get lucky and the speakers hold up than it is a great deal for the money.

Desirability:
great looking amp!!

Sound:
i really do love the sound this amp makes. the shape and EQ are great.

Ease of Use:
super easy to use this product, pretty self explanitory.

Support:
i made a mistake and did not purchase the warranty, i should have... it would have saved me money and a headache. if you are going to buy this amp do yourself a favor and get the warranty, the speakers have a tendency to blow (as many other people have said in other reviews).

Quality:
Absoluet piece of junk! I am on my second BX4210A (2nd one is the warrany replacement) I play in a church setting and do not abuse the amp. Also play at moderately low volume levels. This amp can't take the the volume at all, she will blow on you!

Value:
What good is price if it won't hold up passed a cuple of week?

Desirability:
Don't let the cost of this amp suck you in! You will regret it. I know first hand. I have owned two of them in 10 months!!!!

Sound:
Actually has a good sound and great punch for about 10 sessions

Support:
Too long to write! You better pray that you have problems within the 30 day replacement period or your dead!

Feature:
Has some unique features and the peddles are pretty sweet , till the speakers blow.

Quality:
this amp is peice of junk. I play in a pretty loud band and was impressed at first at how good it sound a auarter of the volume, but half way through one of our songs the right speaker just start farting on me. this amp sucks, its all talk. spend your money on somthing better like eden or ashdown. never ever go behringer. it was also a week late in shipping, so if were you i would go to a local music store and buy an amp out of there, so if it does break you can just take it back and have yours hands on another amp within hours.

Value:
horrible product, go with smomthing better. a 450 watt amp that cant even go 25 % is a peice of crap.

Desirability:
it looks pretty cool, gots a good sex appeal, but its not worth it

Sound:
The sound of the amp is actually ok before it blow, which it will.

Ease of Use:
its pretty heavy but managable, but you wont be carrying it around much since the speaker is going to blow within twenty minutes of playing at the quarter of the volume.

Overall:
the worst ever, DONT WASTE YOUR TIME OR MONEY

Feature:
The feature that I find most useful is the Ultrabass subharmonics processor. It gives another dimension to my sub-contra 8 string bass as far as deeper, louder and clarity of low notes (low C#) that can tend to sound muddy at loud volume. I wish however that it had included a tube section, but for the price, you can't beat it. Thats why they make tube pre-amps for.

Quality:
The unit is very well made. It is as well made as any of the major brands costing hundreds more. My only gripe is the built in wheels. They do function but seem slugish for the weight of the unit. Needs bigger wheels. I may put bigger ones that will make it easier to roll around (this amp is heavy).

Value:
This amp is worth every penny I spent on it and then some. I was actually planing on spending substantially more for a combo amp, but for what this comes with and the wattage you just can't get more bang for your money anywhere. I am very pleased with my investment.

Desirability:
Pictures don't do it any justice. It really is a good looking piece of machinery and exsumes quality. I've been a bassist for almost 30 years so I've played on and seen many different bass amps out there. I was a little skeptical about buying this amp due to "you get what you pay for". I firmly believe this but this amp is the exception to the rule. My brother-in-law is also a long time musician ownes an Eden Metro DC-210XLT Combo. He was thoroughly impressed with how the BX4210A is made and sounds. The amp is not an Eden by any means, but it does not cost upwards of $1400 either. Still it can hold its own to the Eden in repect to build and power.

Sound:
The sound of this amp no matter weather you are running an active or passive bass through it, is awesome. It's loud but tight. I haven't had any problems blowing the speakers. I have had the amp for almost 8 months and have played on it continually for that duaration at high volume levels. Again, no problems, and it does crank!

Ease of Use:
The amp is straight foward and easy to set up. Shouldn't take more than a few minutes to dial up the sound you want with this baby!

Support:
I've only had to call Behringer once before I bought the amp to ask about the issue others were having with blowing speakers. They told me that they had not received too many complaints, but that Behringer had resolved the problem regarding the crossover network and that at the time I bought mine, that I should not have any problems. They did say however if I did, the warranty would cover it.

Overall:
I plan to play on this product until it quits. I however plan to buy an Eden as more funds come available. I think having both would complement each other in that I will have a choice of either depending on the venue.

Feature:
The shape feature is really nice and sweet sounding but i'm not a fan of the ultrabass, it's too dirty and isn't very flattering for your playing skills

Quality:
This amp is very good looking, despite the horrible pictures you see of it. It's rough and tough so it lasts me on the road with ease. There is a lot of people moaning about blowing speakers and i don't think it's just the quality of them. My theory is (correct me if i'm wrong) that the speaker impedance is at only 2 0hms because each speaker is 4 ohms and they are wired in parralel, the amp can only take 4 ohms so if the tweeter is 8 ohms and the speakers are 2 ohms, the minimum is not being reached. If none of that means anything to you: the speakers are being overloaded by the amp. My solution was to buy a 1x15" inch cab aswell and now i can krank this equipment up and have no worry about damaging

Value:
Apart from the speaker impedance, fantastic value, i'd choose this over many higher budget amps even if it costed the same as them.

Desirability:
I think this equipment is so much better than my old equipment, it's improved my playing because it makes me whant to practise more

Sound:
The sound on this is really nice, the amp is particulary great however the speakers are small and give a lot of edge when you whant realy deep sounds so it's best with a 1x15" aswell the give some kick

Ease of Use:
very easy to use. Simple buttons and knobs, no fancy strange modern controls. The pedal is a very usefull freebee that can be read easily even on a poor lit stage.

Support:
the behringer company is sneaky. They printed on all their instructions and boxes etc that there is a seperate headphone output. There isn't. I called the company about it and they siad they change it but i'd laugh to see that they do. Also, they sell the amp (i think) with that bad wiring (what i moaned about in the quality section) so therefore, you really have to have buy more speakers, unless you've already got some

Overall:
buy it, ignore the negative reviews (unless you don't whant to buy more cabs)

Feature:
Lots of features, for the price you can't beat it. Nothing comes close.

Quality:
seems to be built very well. Some other people have had problems with speakers blowing on this amp. I haven't. I have had it about 3-4 months and it hasn't given me any trouble.

Value:
nothing elso comes close, for the money

Desirability:
This amp sounds good but it looks pretty cool to.

Sound:
The sound is real good. I have had it cranked up pretty loud and it preformed well. Has tons of power!!

Ease of Use:
very easy to use

Support:
has always answered my questions within a day or so by email.

Feature:
The same features as expensive amps

Quality:
I think it's great! I see a few people have mentioned blowing speakers - hopefully that won't happen. I've cranked this baby and have had no problems.

Value:
Holy crap - all these watts for $350! You've got to be kidding me. AWESOME!

Desirability:
Looks sharp

Sound:
Pretty damn good - regardless of the price.

Ease of Use:
Simple

Support:
Haven't had to contact them...

Overall:
For this price - I would buy all over again. Sure I would rather have a bigger amp that cost $5000 - but for my budget this amp rocks.

Feature:
tons of features. The subharmonix is useless though

Quality:
seems built pretty well.

Desirability:
looks just as good as it sounds. the speakers are really cool looking.

Sound:
excellent, at low and at high volumes, have had no problems with it. These other people who keep blowing the speakers in it, I am not sure what they are doin.

Ease of Use:
very easy

Overall:
For the money, you can not beat it!!!! I imagine a $1500 rig might sound better but for $350 nothing comes close.