Behringer A800 Power Amplifier

Everything in the title is correct. If you have passive monitors, these amps should be on your short list to audition. The "however" part involves getting world-class performance out of the amplifiers. I am using two of these switched into mono to drive a pair of Amphion Two18 monitors (rated at 4 Ohms). Behringer does not recommend a 4 Ohm speaker for use in mono mode, however I do not push them hard. In my small space they play as loud as I ever want, and only one LED on the power meter lights up during peak volume. There are about 15 LEDs on that meter range. I tried one amp in stereo, but it sounds better to my ears in mono-block mode. I am also driving them with a high end DAC and a passive monitor controller. Reports are that the built-in volume control on the amps do not sound great, so I am not using those. (Just crank the amp to maximum and it bypasses the volume control.)The "however":Straight out of the box, I was not thrilled with the sound, compared with my existing amplifiers. As the day wore on, I was increasingly impressed and I wondered if my ears were adjusting to the sound. I shut everything down for the night, then powered up the next morning and once again I was not impressed. Again by the end of the day I was happy. This went on for several days, then I decided to try leaving the amplifiers running constantly. That was the magic trick. These amps need to be on continuously if you want the very best sound quality out of them. They are Class D, but they do run slightly warm to the touch. Not hot by any means, just above room temp. I tried stacking them directly on top of each other, but they run too hot for my taste. Not burn-your-hand hot, but hot enough that I feel it would shorten the life of the components.Amplifiers are sensitive to power quality so, I use a power filter on each amplifier. I tried them both plugged into one filter, but they sound cleaner when each is on its own filter. The one I use is available on Amazon for $179.00 currently:https://smile.amazon.com/AC-Power-Filter-Conditioner-Protector/dp/B00XWL2VVK/ref=sr_1_3?crid=1HFVFKH0M75KT&dchild=1&keywords=power+filter+audio&qid=1591885701&sprefix=power+filter%2Caps%2C155&sr=8-3In case that link is not working, the description is:AC Power Filter Power Conditioner - WAudio AC Power Purifier with Surge ProtectorSo, if you are an audiophile who wants an amplifier that adds pretty character and warmth to the sound, these are not for you. If you are in my camp of wanting the most transparent, clean, punchy sound so that you can hear exactly what every little change to your system (or mix) is doing, these just might be for you. Don't get me wrong, these amps are easy on the ears, but you can clearly tell what was a bad recording, a poor mix, or what has been over compressed. Good work sparkles and shines through these amps.You need to try them for yourself, of course, but keep in mind what you need to do to get the best out of them. Just let them run 24/7, feed them clean power and good quality signal.

Using these amps for my living room passive subwoofer rack system with a custom made 15" subwoofer cabinet & 6" tuned port. The subwoofer is a Skar Audio SVR D4 model (dual 4 ohm). Each amplifier is bridged to run 2x mono. In order to get the best/cleanest power to the amplifier I am using a Furman PL PRO C20 (currently $350 on Amazon). Does it help...100% YES! These Behringer A800 amps both in mono mode will bottom out this Skar Audio subwoofer before "going into the red" on the VU meters...incredible ability!The amplifier:- Very lightweight- Standard AC power cord- No distortion, hum, hiss, or other mental- bipolar disorder design hangups- Runs cool...even at high volumes- Handles 4 ohm subs with ease (in my case 4 ohm/4 ohm for L-R)- Clipping circuity works- Volume knobs are 30 dB ones...plenty of range- 20 Hz is "all there". Amp doesn't freak out with low freqs and aggressive volume levels- Actual dyno tests on this amp... ~300w @ 4 ohms per channel effective (prob peaks closer to 500w each)- Class D architecture for efficiency and low-low power consumption (I just leave them on)- Sexy looking (and useful) LED front panel VU/dB power output level indicators...def "pro" lookingBOTTOM LINE: I am using professional/stage equipment with XLR (balanced) connections which will give you professional level noise cancelling results. I am a deeeeeep bass loving freak. These amps have plenty of power and fidelity to throw a 15" sub around with ease: with clear and distortion free effectiveness. In fact, they bottom out the Skar Audio sub that has a RMS power rating of 800 watts). Lastly, yes, those are JBL Model L96 studio monitors from 1980...100% restored.Pretty happy with these Behringer A800 amplifiers and their ability to drive my DIY subwoofer system. In mono/bridged mode, they are beasts. Plenty of wall shaking power when used as subwoofer amps. Zehr GUTE!

Class D but it works. Quiet musical backround and quiet operation (virtually no audible noise!). Its a clean linear neutral sound. Does the job well and has good control over the bass speakers (10" ported 2-way). Excellent value but again, class D. Doesn't really pack a punch, though. My class A/B will punch with authority but it's not as clean. A compromise but for the money well bought. Would buy again or might buy a second and run it bridged mono. The amp is no longer the weak link. Running it streamer>aA800>speakers. Good. I run the volume controls on full, all the way up, since I've heard that takes them out of the signal path (maybe). Pretty lights, prett panel. Minimal downside overall and is probably saving me on the power bill. Runs warmish. Nice.

Power amp for NS-10m studio monitor

I'm using one channel of this A800 amp to power a 4-ohm Revel B12 subwoofer whose onboard power amp died. I was tempted to run it in bridged mode, but I didn't want to risk it as Behringer does not recommend running it bridged into a 4-ohm load. Using one channel only provides sufficient volume and thump for the sub. The meter does occasionally go into the red when used for the very loudest sub-bass movie material but the amp doesn't seem to break a sweat. I've also tested it in regular 2-channel mode into large front L/R tower speakers and it absolutely slams with very neutral, accurate sound.

I never write reviews; however, I just had to on this one. I'll keep it short. We followed the guide in the proper setup. Then upon plugging it in, there was a large, loud spark that came from the back right side of the power amp. Then nothing but dead power amp. We unplugged it, and it looks like some metal part had broken loose in shipping, wedging itself against the wire from the power plug. Not good...

has what sounds like 60hz buzz in left channel. Working on it.

very light. nice input output options