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The KA84 is a 4 channel per 2000W on 4ohm Amplifier. It has 4 fully independent and configurable channels.

All in one KA amplifier and processing solution

Tag: Category: SKU: AM/LOW/KAR02

The K-array KA line of power amplifiers are comprised from KA24 and KA84. The KA24 is a 4 channel per 500W on 4ohm and the KA84 is a 4 channel per 2000W on 4ohm.

Each model has 4 fully independent and configurable channels. The integrated DSP offers EQ, Matrix, Levels, Delays and Limiter functions on every channel, to avoid the need of external additional processors. The front panel has an easy-to-use touchscreen that gives access to all the basic functions for quick setup and corrections.

The KA24 and KA84 can be used as a mixer for fixed installations thanks to the microphone and Phantom power options available on every analog IN. 2 GPIO ports give easy external analog controls using K-array accessories.

An on-board K-array speaker preset library gives an optimal and easy configuration for endless combinations. All DSP functions are remote controlled via the K-framework software over RS485 (3-pin XLR) or integrated USB connector.

Both amplifiers are built into a 2U light weight aluminium chassis and come with a kit of removable rack adapters and four rubber pads for flat surfaces.
KA amplifiers feature optical limiters, and protection against over temperature, over current and short circuits.

All KA components are designed by the K-array R&D department and custom made under the K-array quality control system.


  • 8000W in just 2 rack units
  • 4 analog IN and 2 AES-EBU IN to 4 fully configurable OUT
  • 2 GPIO for external analog controls
  • Mic IN and 48V option on all IN for mixer application
  • Integrated DSP with processing, matrix and delays
  • On-board touch screen for easy access functions
  • K-array loudspeaker presets already on-board
  • RS485 and USB connectivity for remote control


  • Theatrical sound reinforcement
  • Concert halls, clubs, house of worship
  • Exhibit audio for museum displays
  • Cinema and installed AV systems
  • Touring PA and Monitoring

Power Output
Max Power @ 4Ω  4 x 2000 W(1)
Max Power @ 8Ω  4 x 1000 W(1)
Max Power bridged @ 8Ω  2 x 4000 W(1)
Minimum impedance 4 Ω (single channel mode)
8 Ω (bridge mode)

Audio specs
Slew rate 8 Ω 50V/μS (input filter bypassed)
S/N Ratio N.A.
Distortion (THD N) < 0.09% 1W to full power @ 4Ω (typically <0.05%)
Input impedance 10 kΩ balanced
Gain 32 dB
Output Unbalanced to ground
Bandwidth 20Hz 20KHz ( -1dB)
Damping factor > 10000 @ 100Hz

Thermal Yes
Short circuit / over-load Yes
Clip limit, Analog signal limit Yes

Audio Input
Analog Connectors 4 male 4 female 3-pin balanced XLR
Digital Connectors 1 male 1 female 3-pin XLR
Remote control Input
Connectors 1 male 1 female XLR parallel / 1 USB B Jack serial converter

Audio powered Output
Connectors 2 x 4-pin Speakon NL4
NL4 1 wiring 1 1- = A1 | 2 2- = A2
NL4 2 wiring 1 1- = B1 | 2 2- = B2

AC power
Connector 2 x PowerCon IN/OUT
Nominal voltage 100 / 240 V, 50/60Hz with PFC
Operating Range AC 90V – 264V
Efficiency >79%(typical)
1/8 rated power (pink noise)@ 8Ω 600 W
Thermal dissipation 1/8 of max output power @ 4Ω = 621 BTU/h
1/4 of max output power @ 4Ω = 1154 BTU/h

IP 20

Dimensions 426 mm x 304 mm x 88.2 mm
(19.1“ x 12” x 3.5 “)
Weight 5.5 Kg (12.12 lb) 6.1 Kg (13.45 lb)





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