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K2 - 1u Power Amp

    Product Code: 100117696

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    2-Channel Power Amplifier for High Performance Touring

    With up to 4,800 W the K2 is the "smallest" amplifier in K Series. Built on the same technologies and features as present in the bigger models, it makes a full-fledged member of Powersoft?s most advanced line. Only 8kg/17.6lbs light, the K2 is the ideal companion for where space, weight, and uncompromised sound quality matter. Per Step-up card a K2 can be upgraded to become a K3 ? more power without replacing the entire amplifier. Click here to go to the K Series Step-Up page.

    In use worldwide by leading touring and event sound companies, K Series is preferred among the top ranking system designers, sound engineers, and system techs on the road for making their lives easier, giving them reliable premier-grade power and headroom in the smallest possible package size.

    Fully digitally controlled and with a serial PC communication port as standard, the K2 is also available with either or both KDSP board and KAESOP Ethernet/AES3 interface. Fully equipped with both options, the K2 DSP+AESOP amounts to a fully integrated, highly sophisticated yet easy to use power source including state-of-the-art sound shaping and system management capabilities, remotely controllable via Powersoft?s Armonía Pro Audio Suite? software.

    Interface available for MediaMatrix, Crestron and AMX control and monitoring systems.

    Key applications:

    Small to Medium Scale Touring FOH Systems
    Stage Monitoring
    Fullrange Loudspeakers

    Concert Halls
    Live Clubs
    Corporate Events


    Number of channels
    Output power 2 ?
    4 ?
    8 ?
    4 ? Bridged 8 ? Bridged
    EIAJ test, 1 kHz, 1% THD 2 x 2,400 W 2 x 1,950 W 2 x 1,000
    1 x 4,800 W 1 x 3,900 W
    Max. output voltage 140 V(peak)
    Max. output current 102 A(peak)


    Power supply Universal, regulated switch mode with PFC (Power Factor Correction)
    Operating voltage 100-240 V ±10%, 50/60 Hz
    Power factor cos (?) >0.95 @ >500 W
    Consumption / current draw
    @ 230 V @ 115 V
    Idle 112 W 0.57 A 1.14 A
    1/8 of max. output power @ 4 ?* 609 W
    3.1 A 6.3 A
    1/4 of max. output power @ 4 ?* 1,219 W
    5.7 A 11.4 A


    Environmental operating temperature 0-45° C / 32-113° F
    Thermal dissipation Fan, continuously variable speed, temperature controlled, front to rear airflow
    Idle 96 kcal/hr 382 BTU/hr
    1/8 of max. output power @ 4 ?* 182 kcal/hr 722 BTU/hr
    1/4 of max. output power @ 4 ?* 268 kcal/hr 1,062 BTU/hr


    Gain (selectable via user menu)
    26 dB 29 dB 32 dB 35 dB
    Input sensitivity @ 8 ? 4.48 V
    3.17 V
    2.47 V
    1.59 V
    Max input level 27 dBu 24 dBu 21 dBu 18 dBu
    Gate -52 dBu
    -55 dBu
    -58 dBu
    -61 dBu
    Input impedance 10 k? balanced

    Frequency response 20 Hz - 20 kHz (1 W @ 8 ?, ±0.5 dB)
    THD+N / SMPTE IMD / DIM100 IMD S/N ratio >106 dBA (20 Hz - 20 kHz, A weighted)
    Crosstalk separation >70 dB @ 1 kHz
    Slew rate 50 V/µs @ 8 ?. input filter bypassed
    Damping factor >5000 @ 20 - 200 Hz

    Indicators 7 meter LEDs: 5 x green, 1 x yellow, 1 x red, top yellow and red show alarm with protect description on LCD panel
    Controls 4 pushbuttons, function depending on user menu
    Maintenance SmartCard reader/writer for firmware updates and preset storage.
    Easily accessible dust filter foam behind two steel covers

    Audio signal input connectors Analog: 2 x balanced Neutrik® XLR female; AES3: use channel 2 XLR
    Audio signal output connectors Analog: 2 x balanced Neutrik® XLR male
    Loudspeaker output connectors 2 x Neutrik® Speakon NL4MD
    Network data port RS485 1 x RJ45 with 2 recessed rotary encoders for ID selection
    Aux voltage
    1 x 2-pin Phoenix P. 3.81mm
    AC mains IEC20A with IEC20A Schuko for EU, IEC20A/American 15A pin plug
    Controls 1 x link switch, linking analog inputs 1 and 2
    AES3/analog input switch

    Dimensions W 483 mm / 19", H 44.5 mm / 1U, D 380 mm / 15"
    Weight 8kg / 17.7 lbs
    Chassis 1 mm / 0.04? steel chassis and removable dust cover
    3 mm / 0.12? steel front panel, screw hole protection, side reinforcement & rear support

    A/D converter
    Dual 24bit 96 kHz Tandem® architecture with 127 dBA of dynamic range and THD D/A converter Dual 24bit 96 kHz Tandem® architecture with 122 dBA of dynamic range and THD Memory 8 MB (RAM) plus 2 MB (flash for presets)
    Presets 50 stored locally + 150 stored on a smartcard
    Digital audio input
    AES3 (glitchless fallback to analog audio selectable)
    Delay for time alignment Up to 4 s on the input section, up to 32 ms per output, sample-by-sample stepping
    Crossover filters Butterworth, Linkwitz-Riley, Bessel, Arbitrary Asymmetric, 6dB/oct to 48dB/oct (IIR), linear phase (FIR), hybrid (FIR+IIR)
    Output equalizer 16 fully parametric filters per channel, IIR: peaking, hi/lo shelving, hi/lo pass eq, band pass, band stop, all pass. Custom FIR up to 384 taps @ 48 or 96 kHz
    Input equalizer
    Three layers (PEQ, raised cosine, shelving), 32 filters each + group filters, up to 256 filters per channel
    Cable compensation network
    Up to 2 ? negative/positive wire compensation (Active DampingControl?)
    Limiter Power limiter (TruePower?, RMS voltage, RMS current) + Peak Limiter

    * = With pink noise signal

    Powersoft reserves the right to change specifications without notice.
    Key benefits/features:
  • Weight and space saving: unequaled, extremely efficient switch mode PSU and Class D design in only one rack space (1U) and 12kg/26.5lbs
  • Power saving: more amp output power from the AC power distro thanks to >90% efficiency, resulting in more overall power from less rack space1)
  • Fewer amplifiers for more speakers: designed for, stable and sounding consistently good with 2? loads
  • Outstanding sonic quality per design, including patented output filters
  • Highly integrated: internal state-of-the-art DSP optional
  • Versatile: large number of amp/system/venue parameters can be configured, locked, and monitored
  • Communicative: serial PC interface on board; Ethernet interface including AES3 over Cat-5e optional (KAESOP) for complete remote monitoring and control
  • Grows with you and your system requirements: upgradable to the next bigger model by simply purchasing Step-up SmartCards

  • All features:
  • Compact size and Light weight - all models only 1 RU and 12 kg (26 pounds) for easier racking and shipping
  • Powersoft legendary universal switch mode power supply up to 300VAC tolerant , compact, high performance
  • Power Factor Correction (PFC), reducing AC mains current draw and increasing voltage operating range (universal power supply)
  • Detachable AC mains cord
  • Low Inrush Limiting reduces AC inrush current, removing the need for expensive power sequencers
  • Fixed frequency switch mode output stage for highest grade audio accuracy
  • Patented output filter with ripple cancellation network
  • Front panel LCD interactive display and LED level meters
  • Lockable user menu for setting max output voltage, max mains current draw, digital gain/attenuation control, defeatable gate selection per channel, limiter and real time
  • Gain/sensitivity user selection capability (Digital gain attenuator)
  • Built-in defeatable Clip limiters for each channel
  • Monitoring of: load impedance, AC mains voltage and current, output voltage, internal temperature
  • Downloadable log file of all functional fault events with time related trace
  • Hardware monitor available for fast local diagnostics
  • Built-in Remote Control (RS 485 interface) for full diagnostic, operational setting and system monitoring, Armonía compatible
  • Temperature controlled continuous variable speed fan, front to rear airflow
  • Smart card reader for preset load/save, firmware upgrades and step-up power to K8/K10 (or K3)
  • Power on/off muting: for 4s at power on, and upon power off amplifiers outputs are muted
  • Neutrik® XLR/1/4" Combo balanced input (link out on K2/K3) and Speakon® output connectors
  • Fully protected circuitry design including DC, infrasonic, high frequency, thermal overload and short circuit
  • Comprehensive protection circuitry:
  • DC protection: protects against infrasonic signals
  • VHF protection: protects the loudspeakers against strong very high frequency non-musical signals above the audible range
  • Thermal protection: prevents the amplifier from being overheated. The protection indicators on the front panel are switched on, as a warning, before the protection process is initiated
  • AC protection: shuts down the power supply if the line voltage is outside the operating voltage
  • Clip limiter: prevents severely clipped waveforms from reaching the loudspeakers, whilst maintaining full peak power
  • Control and monitoring* via Armonía Pro Audio Suite?
  • Interface available* for MediaMatrix, Crestron and AMX control and monitoring systems
  • Full four years warranty

  • *= DSP+AESOP, or AESOP versions only

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