K-Array Kommander KA02 I – Compact Class D DSP Amplifier
Product OverviewThe K-Array Kommander KA02 I is a compact Class D amplifier with DSP that delivers four 50 W channels at 4 ohms from a half-rack chassis weighing just 0.7 kg. Built for commercial AV integration in huddle rooms, conference rooms, and retail-scale zones, this 4-channel installation amplifier combines balanced analog, optical, Bluetooth, and network audio inputs with full onboard processing and remote control. Its quad-core processor runs K-Array's osKar operating system with a REST API, so integrators can tie the amplifier into third-party control platforms without external processors. It is the entry point to the Kommander line; larger systems can step up to the 4x300 W Kommander KA14 I.Product DescriptionThe KA02 I packs a 4-channel switching-mode Class D output stage into a 219 x 45.5 x 170 mm aluminum chassis, producing 4x 50 W at 4 ohms with 20 Hz to 20 kHz (±1 dB) frequency response and 2-ohm PBTL bridging for subwoofer duty. Inputs cover the situations integrators actually meet: four balanced euroblock connections for installed sources, a 3.5 mm stereo AUX jack for local devices, a TOSLINK optical input for displays and media players, four USB-A ports for file playback, plus Bluetooth 4.1 Low Energy and Wi-Fi streaming. The Integrated Electronic Brain runs the osKar operating system on a quad-core processor, providing input and output EQ, signal routing, grouping, level control, dynamic limiters, and delay — a complete small-room DSP without an outboard processor. The K-array Connect mobile app gives end users and technicians Wi-Fi control of main DSP parameters, while K-framework3 over wired Ethernet handles professional system design and tuning across many units. A REST API and published plugins for Q-SYS, Crestron, Control4, AMX, RTI, and Kramer make the KA02 I straightforward to fold into commercial control systems, and comprehensive protections — thermal, short circuit, overload, and clip limiting — keep connected loudspeakers safe in unattended installations. It is the natural drive unit for K-Array's compact passive loudspeakers; browse matching speakers in the K-Array collection.Key Features Four Class D Channels in Half-Rack Format — 4x 50 W at 4 ohms from a 219 mm wide, 0.7 kg aluminum chassis fits credenzas, lecterns, and shallow AV racks where full-size amplifiers cannot. Flexible Output Bridging — Channels can be configured for stereo satellites plus a bridged 2-ohm PBTL subwoofer output, covering 2.1 and 4-zone designs from one unit. Complete Onboard DSP — Input/output EQ, signal routing, grouping, level adjustment, dynamic limiters, and delay eliminate the need for a separate processor in small commercial rooms. osKar OS with REST API — The quad-core Integrated Electronic Brain exposes a REST API for direct integration with third-party room control and automation systems. Comprehensive Input Set — Four balanced euroblock inputs, 3.5 mm AUX, TOSLINK optical, four USB-A ports, Bluetooth 4.1 LE, and Wi-Fi cover installed, local, and wireless sources. App and Software Control — The K-array Connect mobile app manages DSP over Wi-Fi, while K-framework3 over Ethernet supports multi-unit professional design and tuning. Published Control Plugins — Ready-made modules for Q-SYS, Crestron, Control4, AMX, RTI, and Kramer shorten programming time on commercial integration projects. Full Protection Suite — Thermal limiting, short-circuit and overload protection, clip limiting, and high-frequency protection safeguard loudspeakers in unattended installations. External 24 V Power Architecture — The included 100-240 V AC adapter and 20 W typical consumption simplify placement in furniture and millwork without ventilation concerns. Typical Applications Huddle rooms and small conference rooms driving compact passive loudspeakers Boardrooms needing discreet amplification with control system integration Commercial meeting spaces with Bluetooth and network audio sources Training rooms and multi-purpose rooms with zoned audio requirements Government spaces requiring secure wired control over Ethernet Broadcast studios needing compact monitor feeds with onboard DSP Technical Specifications Type 4-channel switching mode, Class D amplifier Output Power 4x 50 W @ 4 Ω Minimum Impedance 4 Ω (2 Ω in PBTL bridged mode) Frequency Response 20 Hz – 20 kHz (±1 dB) Analog Inputs 4x balanced Euroblock 1.5/3-ST-3.81, 3.5 mm unbalanced stereo AUX Digital Inputs TOSLINK optical, 4x USB-A 2.0, RJ45 Ethernet, Bluetooth 4.1 Low Energy, Wi-Fi IEEE 802.11 b/g/n Outputs 2x Euroblock 2.5/4-G-5.08 speaker connectors Built-in DSP Grouping, input EQ, output EQ, signal routing, level adjustment, dynamic limiters, delay Remote Control K-array Connect app (Wi-Fi), K-framework3 software (wired Ethernet), REST API Power Dedicated AC/DC adapter, 100-240 V AC 50-60 Hz input, 24 V / 4 A DC output Power Consumption 20 W @ 4 Ω load, pink noise, 1/8 rated power Protections Over-temperature (power limiting/thermal shutdown), short circuit/overload, power limiting, clip limiter, high-frequency protection IP Rating IP20 Dimensions (W x H x D) 219 x 45.5 x 170 mm (8.6 x 1.8 x 6.7 in) Weight 0.7 kg (1.5 lb) Material Aluminum Frequently Asked QuestionsWhich K-Array speakers does the KA02 I drive?It is designed for K-Array's compact passive loudspeakers — small column, satellite, and miniature point source models suited to its 50 W per channel rating — with dedicated speaker presets applied through the onboard DSP. See compatible models in the K-Array collection.Can the KA02 I power a subwoofer and satellites together?Yes. Channels 1 and 2 can bridge in PBTL mode into a 2-ohm subwoofer load while channels 3 and 4 drive left and right satellites — a complete 2.1 system from a single half-rack unit.How is the amplifier controlled remotely?Three ways: the K-array Connect mobile app over Wi-Fi for everyday DSP and routing control, K-framework3 over wired Ethernet for professional multi-unit design and tuning, and the REST API for custom control system integration.Does it work with Crestron, Q-SYS, or Control4?Yes. K-Array publishes plugins for Q-SYS, Crestron, Crestron Home, Control4, AMX, RTI, and Kramer, so commercial integrators can manage the KA02 I from existing room control processors.Does it require rack mounting and ventilation?No. The half-rack aluminum chassis weighs 0.7 kg, uses an external 24 V adapter, and draws roughly 20 W in typical operation, so it installs in credenzas, lecterns, and millwork as comfortably as in a rack.What is the difference between the KA02 I and the KA14 I?The KA02 I delivers 4x 50 W for small rooms and compact loudspeakers; the Kommander KA14 I steps up to 4x 300 W in a 1U full-rack format for larger passive systems, with the same DSP and control ecosystem.What warranty applies?K-Array products carry a 5-year manufacturer warranty, supported by Creation Networks as an authorized dealer with system design assistance before and after the sale.
