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Behringer NU4-6000

iNUKE Series power amplifier — 440W x 4 at 8 ohms, 3,000W x 2 at 4 ohms bridged pair

4 Reviews | 1 question - 1 answer

Item # 937NU46000

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Our take on the Behringer NU4-6000

When I'd help my friend's band set up for a gig, the last thing I wanted to see was a bunch of heavy amps mounted in a back-breaking amp rack. That's why Behringer's iNUKE pro audio amplifiers are such a welcome sight. These highly efficient yet lightweight amps deliver impressive power for any event. And, Behringer backs up their iNUKE amps with a 3-year warranty. 

A lightweight chassis with a power punch

When I'd help my friend's band set up for a gig, the last thing I wanted to see was a bunch of heavy amps mounted in a back-breaking amp rack. That's why Behringer's iNUKE pro audio amplifiers are such a welcome sight. These highly efficient yet lightweight amps deliver impressive power for any event. And, Behringer backs up their iNUKE amps with a 3-year warranty. 

A simple and effective design

Weighing just over 12 pounds, Behringer's NU4-6000 4-channel amplifier pumps out 440 watts per channel at 8 ohms, 860 watts per channel at 4 ohms, and 1600 watts per channel at 2 ohms. Its class D design and "back to front" ventilation system ensure that it will run with virtually no thermal buildup, eliminating the need for the heavy transformers and massive heat sinks found in "old school" amps. This also means you can stack them close together in a rack. The built-in "Zero Attack" limiters let you get the most output, but still protect your speakers from being overdriven. 

The NU4-6000 includes built-in crossovers, which can be set to full-range, low-pass for subwoofers, or high-pass for your satellite speakers. Two mode switches let you configure the amp for stereo, mono, or bridged operation depending on your setup. Front-panel illuminated controls provide precise level adjustments for each of the four channels. The NU4-6000 also offers combination XLR and 1/4" input connectors for your source material and twist-lock output connections, compatible with Neutrik Speakon® connectors, for your speaker cables.

Can you say flexibility?

This amp is up for just about any job. You can run four separate monitors, or use the front channels for your mains and the rear channels for your monitors. Or you could run your mains with the front channels, and bridge the back channels to run a sub. No matter how your system changes over the years, you'll always find a good spot for the NU4-6000.

Product Highlights:

    General Information:
    • 4-channel pro audio amplifier
    • power output:
      • 440 watts per channel at 8 ohms
      • 860 watts per channel at 4 ohms
      • 1600 watts per channel at 2 ohms
      • 1600 watts (mono) at 8 ohms in bridged mode
    • frequency response: 20-20,000 Hz (-2.0 dB)
    • signal-to-noise ratio: 100 dB
    • total harmonic distortion: 0.2%
    • illuminated independent channel level controls for precise volume matching
    • two high- and low-pass crossovers (100 Hz)
    • variable-speed fan and "back to front" ventilation for heat dissipation
    • two mode switches for stereo, mono, or bridged modes
    • DC, short circuit, and thermal overload protection
    • rack mount ears included
    • inputs: combination XLR and 1/4" TRS for channels A, B, C, and D
    • outputs: four twist-lock connections (compatible with Neutrik Speakon connectors)
    Other Information:

    What's in the Box:

    • 4-channel Power amplifier
    • 59" AC power cord (IEC 3-prong plug)
    • Quick Start Guide
    • Global Care Information

    Behringer NU4-6000 Reviews

    Average Customer Review(s):

    (4 Reviews)

    Behringer NU4-6000

    Crutchfield customer from Rock Valley, IA on 4/13/2018

    Crutchfield Customer Review (What's this?)

    Awesome amplifier More power than expected



    Great amp! No regrets!

    Darryll from Kula, HI on 12/10/2017

    Crutchfield Customer Review (What's this?)

    Works great. This amp is light and durable. I've run it with 4 monitors, no problem. Run subs? no problem. Run mains? no problem. This amp will run all night with no drop off and stay cool all night long! You won't regret buying this amp. The versatility for applications plus the power is well worth the money, especially for this price point! You won't regret it.

    Pros: Power, Weight, Versatility

    Cons: I can't think of any.

    Behringer NU4-6000

    Hector R from Las piedras, PR on 8/26/2016

    Crutchfield Customer Review (What's this?)

    I like this Amplifier in comparison with my old amplifier it's true tha this amp have a great power to run any venue but do not have 6000 watts RMS,also when i turn all volume without any input signal i can hear some noise from my speakers.but at all and for that price i consider it is a great amplifier,about the reliability we have to wait a little fo the next review.

    Pros: simple to use,good power,is not to heavy,four channels with many obtions of conectivity.

    Cons: have just to prevent and protect the Amp. from Ac. input with a line conditioner .

    Behringer NU4-6000

    Crutchfield customer from San Juan, PR on 8/14/2016

    Crutchfield Customer Review (What's this?)

    It's very good.




    Hands-on research

    Features and Specs

    Number of Channels 4
    Power Class D
    Watts per channel 8 ohms 440
    Watts per channel 4 ohms 860
    Watts per channel 2 ohms 1600
    Watts bridged 3000
    Fan cooled Y
    DSP N
    Filters Hi-cut, Lo-cut
    Rack spaces 2
    Height (inches) 3-3/4
    Depth (inches) 12-15/16
    Width (inches) 18-15/16
    Weight 11.7 lbs
    RCA ---
    1/4" 4
    XLR 4
    1/4" ---
    Binding post ---
    Spring post ---

    Product Research



    Overview: The Behringer iNuke NU4-6000 is a lightweight 4-channel amplifier delivers plenty of power when you need it. Featuring a "back-to-front" ventilation system, this Class-D amplifier runs cool with "near zero" thermal buildup. You can use the amplifier on stage connected to a mixer, or for DJ work. The NU4-6000 is rack-mountable, and requires 2U of rack space (no hardware included).

    Built-in 3-way Crossovers: The amp features built-in 3-way crossovers for each pair of channels (A/B and C/D). Each crossover can be set to full-range, high-pass, or low-pass operation via a 3-way slide switch on the rear panel. Full-range mode sends an unfiltered output to the speakers. In HF mode, frequencies above 100Hz are sent to the speakers, while in LF mode, low-frequency content below 100Hz is sent to passive subwoofers.

    Bridgeable: The NU4-6000's four channels can be bridged into two outputs. The amplifier will produce 3000 watts when connected to a 4Ω speaker, or 1600 watts for an 8Ω speaker. A 3-way Mode switches on the rear panel let you set each channel pair to Bridge mode, dual mono, or stereo mode.

    Bi-amping: You can bi-amp a single pair of speakers using one NU4-6000 amplifier. Bi-amping splits an audio signal into lower and upper frequency bands, and sends each frequency band to separate speaker cabinets. Horizontal bi-amping uses two linked channels of the iNuke 4-6000 amplifier to amplify the low frequencies (Channels A and B), while the other two channels (Channels C and D) are linked together to handle the high frequencies. Vertical bi-amping uses one linked pair of channels per stereo side (Channels A and B amplify the left side, while Channels C and D amplify the right). This requires an external crossover to separate the low frequencies from the mid/high frequencies so they can be amplified separately.

    Connections: The iNuke NU4-6000 is equipped with four 1/4"-XLR combo inputs. The four outputs have professional twist-lock speaker connections that are compatible with Neutrik speakON connectors.

    Front Panel Controls: The NU4-6000 features simple operation with detented rotary gain controls for channels A, B, C, and D. Each control has three amber signal LEDs that light when signal is present (at -24, -12, and -6 dBFS), and a Clip LED to indicate when the signal is distorted and needs to be reduced. The gain control knobs feature amber and red illuminated rings that are easy to see in dark conditions.

    Warranty Terms: Behringer offers a 3-year warranty when you register your product within 90 calendar days of purchase. If the product is not properly registered, the warranty period is one year.


    Maximum Output Power:

    • 2Ω Stereo: 4 x 1600 watts
    • 4Ω Stereo: 4 x 860 watts
    • 8Ω Stereo: 4 x 440 watts
    • 4Ω Bridged Mono: 2x 3000 watts
    • 8Ω Bridged Mono: 2x 1600 watts


    • Connections: 4 x TRS 1/4"-XLR Combo jacks
    • Input Impedance: 10kΩ (unbalanced), 20 kΩ (balanced)
    • Input Sensitivity (for rated power into 4Ω: 0.775 V (0 dBu)


    • Connections: 4 x locking style professional speaker connectors (Neutrik speakON)
    • Distortion (1/8 rated power): <0.02%
    • Frequency Response: 20 Hz to 20 kHz, +0/-2dB
    • Signal-to-Noise: >100dB


    • Width: 18.9375"
    • Height: 3.7"
    • Depth: 12.2" (13.7" w/power cord)
    • Weight: 12.4 pounds

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Q & A

    Customer Q&A

    Crutchfield asked  
    Why did you buy this?

    Plenty of power over 4 channels. only weighs 8 lbs.I like the NU-3000 amp i got so this amp will be a welcome addition to my live sound Gear. [ Darryll  Nov 15, 2017 ]

    1 question already asked

    That is the rated RMS power at 2-ohm. Please be aware though that this is not designed for regular home use. It is a Pro level amplifier (for example a PA or band set-up). [ Jeff  Oct 12, 2017 ]  Staff