Feature:
Its got most everything that I could ever want. Should have a tuner built into it as the behringer guitar amps do. Heres what it has: 5 band eq, XLR out, 1/4 out, FX loop, active and passive ins. The VU meter should be bigger.

Quality:
It would be higher had I not had to solder in a new jack a day after buying it. I think I spent $4.00 on the jack. I have gigged rock concerts, churches, and band practices every week with this head. It gets torn down atleast two times a week and gets transported both times. Has great connectors, and is built well. Weighs 30 lbs. 450 watts. ooo.

Value:
This is the most bang for the buck ever. Very durable too. If you decide to purchace this and can solder then you will be VERY happy.

Desirability:
I really like this amp. I would prefer Tolex as opposed to the felt that they put on it simply for cleaning reasons. I replaced the fan with a blue LED one and modded the VU and leds in the front with blue ones to further increase the "sex appeal" The guts are crafted very nicely: lots of thermal compound on the transistors, fan cooled caps.. and so on...

Sound:
This is the second Behringer that I have ever owned. It will not be the last. The sound on this thing is rather "dry" unless you know your way around Behringer's Eq. Both my GMX 212 and this BX4500 have a very narrow "sweet spot" that will take some time to dial in. There is a design flaw in this head. There is a ground loop between the instrument in's and the foot switch. Behringer has "fixed" this problem by cutting a ground wire off the PCB so everything grounds through the chassis. Think single coil guitar pickup humm... What I did was de solder the foot switch jack and replace it with a Peavey output jack that is ISOLATED. (plastic coated) I then re connected the wire that they cut which allows the inputs to short when you remove the cord. This is normal with all amps so that when you remove the cord there is no nose emitted from the speaker. This whole procedure took me about an hour to complete. from testing to soldering and finding parts. After the mod I put in some blue leds into the VU meter and and on the front panel to enhance its sex appeal. After the jack replacement this thing sounds as good as the Carvin 200 that I was running before. The XLR is a nice touch as it allows me to connect to the PA at our church. The XLR is post EQ so you can control the eq on your head and have the master mixer receive that sound. The 1/4 out is pre eq so the sound is dry that comes out of that. The pre amp over drives to the red zone very easily. I have Seymour Duncan 1/4 Pounders in my bass and I have to go into the active jack with the gain at less than 1/2. But it does play very nicely through it. I dont really see any use for the ultrabass octiver or the shape filter or the foot switch.

Ease of Use:
It takes quite some time (a few days for me) to get your sound dialed in. I never really did find a use for the octiver, foot switch, or shape filter. Behringer could sugest some "preset" eq settings for it. They also need to do a real fix for the grounding problem. People should not have to open up the amp and replace components right after they buy one.

Support:
Behringer 1/2 butts this one on not fixing this problem right. Why contact them when they will just send you another defective one... Read the other reviews too!

Overall:
I guess for what you pay for it you can live with the hum if the thought of opening it up scares you.. But for 4 dollars you can fix it so why not. I have never had a behringer die on me to this day. It is a great head and I plan to keep it until it quits working. I don't think I will ever trade this. Could also make a great amp for you home entertainment system since you can bypass the pre amp section AND the hum and just use the power amp.

Feature:
Please read my previous review, but in general, almost every feature is a useful one, especially if you decide to use this capable amp for other things than bass. I didn't think the ultrabass was important at first, but we have come to use it as well when we want an octaver effect.

Quality:
All my amps and cabs came without problems and have not had any problems since. We play regularly, move them from gig to gig, use them for practice, and don't baby them. They are very solid, with both the amps and cabs being housed in thick wood and black rug. Metal grills on the cabs have held up well and offer lots of protection. Here's a story - On the first amp I said that the knobs were too "loose", no resistance to the touch, which feels "cheap". Well by the time I bought number two, they had substituted knobs that had great high quality feel. Number three came that way as well. To say I was impressed, is an understatement. I am not saying they listened, I am just saying they are looking to improve and have.

Value:
The rig I have described above includes 3 BX4500H, 2 BA410s and 1 BA115. Even if you think the heads are overrated in terms of power (which I doubt having used them) lets say they produce close to 1000 Watts, you have three cabes with 8 10" drivers, 1 15" driver, and three high frequency horns (switchable) and they all have aluminum cones. All this costs less than $1700 even with Speakon cables added. Well - you could say Ampeg is the way to go - the 450W solid state heads there start at about $580 each. Hartke - $500. Do the math, then buy these things before they go up again.

Desirability:
As a group this triple rig has a lot of appeal, but even the smallest version looks fine on stage.

Sound:
This amp's main reputation problem is people love to bash Beringher. Otherwise, it's a really great bass amp for the working musician. I wrote a review on my first one back in October of 2005. We now use three BX4500H heads in our setup. Two of them drive BA410 cabs, and one drives a BA115. Someone back then said buy two, they're cheap. We got thinking about it, and it seemed appropriate to buy three in fact! The heads work best with a single cab, because of the impedence, so we bought three cabs, and three heads. We loop them, plugging the bass into the first one, coming out of the effects loop to drive the second, and into the second through the return jack, which basically just uses the power amp section of that head, and then the same loop out of head two and into head three. You can then adjust the settings on the first head, just crank up the output knob on all three and KABOOM! You get far less noise by slaving them in this manner. It's still not as spiffy as some tube amp at twice the price, but there's little else that will match it at the money. By the way, use Speakon cables to the cabs, it really makes a difference.

Ease of Use:
The variety of inputs and outputs make the set up I describe under sound possible and that is the key to making this a first class professional rig, while not spending the earth. And what I describe is just one possibility. A huge side benefit of the collective rig, is that it is modular. If you want to go to a small venue, or practice, take one head, and the BA115. Need a sweet setup in a medium sized venue, two heads, and the 2 BA410s. Need a system for an outdoor, or just want to impress the troops (and yes people will be impressed even though its Beringher) bring all three heads and all three cabs. A setup for any occasion.

Support:
No real experience with service, they work far too well. I have used the Beringher web site to keep up with what's going on there, and I find it useful.

Overall:
Great value, and it delivers. Would consider Fender pro series and Ampeg is money was not an issue.

Feature:
The supplied power cord is really short for a head to be used with large cabinets. The EQ controls (five rotary controls)are useful and effective. The Ultrabass and Shape are less important to me. It would be really great if it handled 2 ohm loads, like 2 BA410/BB410 cabs or 1 BA115/1 BA410.

Quality:
Still early to give a long term quality rating. It arrived and worked as expected without any problems. The case is extremely sturdy. Would be better with metal corners on it. The rotary controls work fine, but are at odds with the overall quality feel. Good knobs are smooth and offer some resistance. These move too freely. Minor thing.

Value:
I believe this to be the best buy available right now for a bass amp. It is also actually useful for other applications (with some tweaking of the controls). It is a very powerful amp and can provide a good solid clear sound. Short of much more expensive tube amps this is it.

Desirability:
When combined with various Behringer cabinets, it is an attractive stack on stage.

Sound:
The BX4500H produces a broad range of useful sounds that work for many types of music. The high headroom allows nice clean sound, and the Gain control can add some crunch. Enormous power available. Certainly not as musical as a tube preamp or all tube amp, but really outstanding for the money.

Support:
No experience with support yet.

Overall:
The value makes the BX4500H almost irresistable, unless you have a huge budget two or three times the cost for this unit. Only drawbacks I can really see are the limitation of staying above 4 ohms total impedence, and the light feel of the knobs.

Feature:
Works as expected. Ultrabass... don't care really since got an octaver on my GT-6B. There is a audible pop when turning on the Ultrabass. Shape is nice; it's like a sweepable notch filter. Comes with a foot pedal that can switch the Ultrabass and Shape on/off (haven't used it yet)

Quality:
Solid, feels well put together. Used it in several outside gigs where the temps were well into the 90's and the unit in direct sun. NO troubles.

Value:
Nice features and great price. $450 for this head and a 210 cab... Wow!

Desirability:
Looks nice. Maybe a little spartan compared to some, definately looks cooler that my 800RB did.

Sound:
Hard to give it a 10. I needed an inexpensive rig to replace my ailing Ampeg 115 and decided to go component again. Had a GK800RB and PV1820 forever before the Ampeg. Teamed with a BB210 Cab and sounds great. If you really want it to scream you need to run it @ 4 ohms though. Figure I'll get a BB115 to go with it eventually.

Ease of Use:
Gain structure is a little weird but easy to get used to. For whatever reason I haven't found the input meter to be terribly useful.

Support:
No clue. Haven't had to.

Overall:
Rolled the dice.. bought it on price and reviews. Was pleased that I didn't have to send it back. In the future I may cross over to using a straight power amp like the EP1500 with the Behringer cab(s), since I could do most of the preamp stuff in the GT-6B.

Feature:
The footswitch that came with this is a great alternative to running up to your amp and pushing a button. I can be standing 25 feet from my amp and hit the ultrabass feature and BOOM! there goes your eardrums. The knobs on it are easy to read and i love the VU meter. It really helps when I'm rockin out and i see it in the red i know i have to turn the gain down.

Quality:
This head is made extremely well you don't need any type of carrying case it's so rugged. I don't even have to baby it(even though i do). I love the carpet on it and the corner protectors. I have no worry of it breaking or blowing up. I really recommend the BA410 Ultrabass cabinet from Behringer.

Value:
This is an EXCELLENT buy and it's the best thing ive bought with my money. This is better than an ampeg head and louder than many. I don't know why someone would buy something else.

Desirability:
What a great looking head. It looks extremely sexy on my 410 i love the black and gold color. it's also extremely easy to transport.

Sound:
This BX4500H head is the best I've ever heard. Seriously, don't listen to those reviews that say this has anything wrong with it, it seriously doesn't. I can play small gigs, clubs, and huge mass audience gigs. I can't believe I have this good of a sound. It is also extremely loud. I put the volume half way between 0 and the middle of the volume and it rattles my whole house. This thing has awesome sound.

Ease of Use:
You don't even need the manual. You can get the best sound by just listening to it. You can change the sound to slap and pop bass or low metal sounding bass. I put this 450 watt head on top of my Behringer BA 410 Ultrabass cabinet and boy does it rock the shingles off my house. I play on this with a Fender P-Bass and it sounds great. But a little First Act bass would sound great on this thing.

Support:
I don't know anything about the support because i've never had to have any problems fixed.

Overall:
I think this will last me at least 15 years. and when i do buy another head i'll buy this one again and again. Behringer is now the top listed amplifier in my book. I also went to music stores around me and heard ampegs, fenders, and crates and these were all over 500 watts and they weren't half as good as this thing. I love it.

Feature:
as long as you match the stack, this thing in packed with features. of course Ultrabass and smooth have become my best friend. I rumble all of the houses on my block. The VU meter helps you cue in the right volumes.

Quality:
Built very well, it keeps cool, and runs for hours. The VU is a great tool if you know how to use it.

Value:
Definately worth it if you need something fast and still great with quality.

Desirability:
For a 450 watt amp, this thing says come on and do me. I love the fact that you can double the stack If you buy two(why not go for four), and just go from line out to line in easily with no extra buzz.

Sound:
This thing can pack a punch better than the 3000

Support:
Haven't had any promlems with it at all.

Overall:
I am pretty much stuck with it for awhile, and like I said If you want to really piss people off buy about four of these and link em together and then you can have four stacks with all of their own tone control, or just get power amps. either way this thing can fill a room with low pitch. It could kill if you get four and the acoustics are right.

Feature:
There are always a few things that you can add. This amp comes with an impressive set of tone shaping options that are equal or better than the average head in this class. I don't really NEED any of the things it does not have.

Quality:
Remember that these ratings are relative. This amp is the most it can be for the money. Several reviews talk about buzz and treble noise. This is mostly due to a wood case. Since the amp is not enclosed in metal, the electrical noise can easily get out into your pickups. Stand a few more feet away and it will get quieter. I made some small internal changes that made it even a little quieter. These really aren't necessary, just stand a couple steps away (or even turn your bass) and the electrical noise goes down almost totally.

Value:
Looking at the features, the construction, the performance, and the sound, it is quite a value. As an engineer, I am disappointed that a few things are not different, but for the price they put out a hell of a product.

Desirability:
Okay, the engineers in Germany did their homework and made a pretty good amp, that is a great deal for the price. My only gripe is that the front panel labels are hard to read. The top labels can't be seen from above because the control panel is recessed in the case. The lower labels are tiny, and hard to read on a dark stage. It does look sexy, you might have to squat down or squint to read it, though.

Sound:
This amp actually sounds pretty good. There are a lot of tone shaping options. Play with ALL of them in many combinations as soon as you get it. The LOW and BRIGHT switches are essential to understand. The SHAPE feature is great. One click and you can get a totally new sound. The octave function was disappointing for me. It does not track and hold nearly as well as others I have used.

Ease of Use:
Plug you bass and speaker and start using it. The BOOKS come in every language out there, and aren't necessary. Find your favorite tone with the SHAPE off. Then, turn on the SHAPE feature and adjust only it to get that "B" sound for your gig. I use a thick rock sound and set the SHAPE to brighten things up for this upper-register chordal piece I do. The included foot-switch makes this change a single tap back and forth.

Support:
I see support as two sided: Pre Sale: Their advertising info and website has a fair amount of information. They aren't stellar, but much better than some of them out there. Post Sale: Not used, no comment

Overall:
Overall this amp is a winner. There are sound shaping options galore and plenty of power to get that sound out. Stand back to minimize the buzz. I have had no failures, but hard to tell if the reports are disproportionate for the HUGE numbers of these heads out there. When you're ready to stop using that practice amp on stage, get one of these. It will take you far. ... Maybe to the point you get your next flashy rig free in a big endorsement deal! Yeah, I wish too.

Feature:
The ultrabass is alright. The deep, and bright functions on the face of the amp are not bad. but the only problem is the ultrabass in the deep regions.

Quality:
a lot of bang for your buck. the thing has two fans from what i read, a limiter on the main so you dont funk your speakers up, nice compressor, and XLR direct out for recording.

Desirability:
Can't be any better i got mine 200 before they upped the price to 260

Sound:
As long as you use a compressor before to boost the vu meter closer to the red it is one bad ass sounding amp. When i first got it i didnt use a compressor it was kinda weak. With the compressor i can turn down the gain and turn the main up so not much hiss, except for some from the compressor.

Support:
havent experienced it. but i have two other behringer bass amps and no problems with them, so im expecting to have the same with this one.

Overall:
Can't go wrong with this thing. if you're lookin for a thumpin bass amp, as long as you have the right kinda cab, then their is no better amp. I use the 4X10 cab that can handle 1000W and it's loud as thunder.