Powersoft K20 NON DSP

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Powersoft K20 NON DSP

Was £4,786.43 £3,486.43

Normally with in 8-12 days

The K20 impresses with up to 18,000 W in a single rack space, making it probably the most powerful amplifier at its size, and definitely the most powerful model within the K Series, the most advanced line of power amplifiers from Powersoft.

Ideal for subwoofers requiring relatively high continuous power and ample headroom, the K20 is the unique result of smart design, attention to sound quality, and extremely high efficiency with reliability, portability, and adaptability in mind.

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 K20 is also available with KDSP board and KAESOP Ethernet/AES3 interface: the K20 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™ (Interface available for MediaMatrix, Crestron, AMX, Q-SYS control and monitoring systems).

Power supply

Advanced switch-mode worldwide operating power supply technology for high performance and compact size
Power Factor Correction PFC for extremely low mains consumption and extremely wide mains operating range
Low Inrush Limiting reduces AC inrush current, removing the need for expensive power sequencers


Fully protected circuit design with:

Ac protection: shut down power supply when AC mains voltage is outside operating range
Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output
DC protection: protects against infrasonic signal at the outputs
VHF protections: protects the loudspeakers against non audible, strong, non musical high frequency signals
Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection reset
Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output
Thermal protection: output stages operating temperature up to 80 °C (176 °F)
Temperature controlled continous variable speed fan, front to back airflow
Temperature forecast with LCD traced historical behaviour


Fixed frequency switchmode output stage for high grade sound accuracy
Compact size - all models only 1 RU for reduced rack cost and space
Light weight - for easier racking and shipping: 12 kg (26.5 lbs) according to configuration
Combo XLR/6.3mm jack Neutrik input connectors with link capability
AES3 digital input


LCD matrix interactive display
Comprehensive-user friendly front panel display menu
Built-in defeatable clip limiters for each channel
Digital gain-attenuator control
Defeatable gate selection for each channel
User selectable gain/sensitivity
User selectable maximum output power for each channel
User selectable maximum mains current draw
Lockable set-up by user selectable access key code
Built in remote control via the RS-485 interface provides full diagnostic, operational setting and system monitoring


Hardware monitor available for fast local diagnostic
Load impedance measurement / display for each channel
Output power measurements / display for each channel
Mains voltage and current measurements / display
Downloadable log file of functional fault events with time related trace
Smart Card settings, parameters and upgrades functionality

Digital Signal Processing

Analog Devices SHARC® DSP architecture
AD/DA converter: dual 24bit @ 96 kHz Tandem® architecture, 127 dB dynamic range, per channel
Input/output independent equalizers per channel providing PEQ, raised cosine, shelving IIR filters as well as custom output FIR filters
Delay up to 1 s for time alignment
Active DampingControl™ for cable compensation
Power limiter (TruePower™, RMS voltage, RMS current) + Peak Limiter

Remote management

Control and monitoring through Armonía Pro Audio Suite™
Interface available for MediaMatrix, Crestron, AMXcontrol, Q-SYS and monitoring systems



Number of channels 2
Output power
Single channel mode
2 Ohms 9000 W
4 Ohms 5200 W
8 Ohms 2700 W
Bridge mode
4 Ohms 18000W
8 Ohms 10400W
Max output voltage / current 225 Vpeak / 125 Apeak Single Channel / 450 Vpeak Bridge Mode

AC Main Power

Power supply Universal, regulated switch mode with PFC (Power Factor Correction)
Nominal power requirement 100-240 V ±10%, 50-60 Hz
Operating voltage 90 V - 264 V
Power consuption Idle - 88 W 1.17 A
1/8 of max output power @ 4 Ohms 1625 W 7.9 A
1/4 of max output power @ 4 Ohms 3250 W 14.7 A


Operating temperature range 0° - 45° C - 32° - 113° F
Thermal dissipation Idle 682 BTU/h 171.9 kcal/h
1/8 of max output power @ 4 Ohms 1590 BTU/h 400.7 kcal/h
1/4 of max output power @ 4 Ohms 2498 BTU/h 629.5 kcal/h


Gain 26 dB 29 dB 32 dB 35 dB
Input sensitivity 7.37 V 5.22 V 3.68 V 2.62 V
Max input level 27 dBu 24 dBu 21 dBu 18 dBu
Gate -52 dBu -55 dBu -58 dBu -61 dBu
Frequency response 20 Hz - 20 kHz (±0.5 dB) @ 1 W, 8 Ohms
S/N ratio > 110 dB (20 Hz - 20 kHz, A weighted)
Crosstalk separation > 66 dB @ 1kHz
THD+N < 0.5% from 1 W to full power (typically < 0.05%)
IMD < 0.5% from 1 W to full power (typically
Input impedance 10 kO balanced
Slew rate 50 V/µs @ 8O, input filter bypassed
Damping factor > 5000 @ 20-200 Hz


DSP architecture Analog Devices SHARC® DSP
AD Converter Dual 24 bit 96 kHz Tandem® architecture with 127 dBA of dynamic range and THD
DA Converter Dual 24 bit 96 kHz Tandem® architecture with 122 dBA of dynamic range and THD
Internal precision 40 bit floating point
Firmware Network upgradable firmware
Memory/presets 8 MB (RAM) plus 2 MB flash for presets / 50 stored locally + 150 stored on Smart Card
Latency 6.0 ms fixed latency architecture
Input equalizer Three layers (PEQ, raised cosine, shelving), 32 filters each + group filters, up to 256 filters total
Output equalizer 16 fully parametric filters per channel, IIR: peaking, hi/lo-shelving, hi/lo-pass, band-pass, band-stop, all-pass. Custom FIR up to 384 taps @ 48 or 96 kHz
Crossover Butterworth, Linkwitz-Riley, Bessel: 6 dB/oct to 48 dB/oct (IIR), linear phase (FIR), hybrid (FIR-IIR)
Delay up to 4 s on input section; up to 32 ms per output, sample-by-sample stepping
Limiters Power limiter, TruePower™, RMS voltage, RMS current + Peak limiter
Damping control Active DampingControl™

Front panel

Indicators and Controllers
2 x LED bar - Signal level and over-temperature protection
4 x Push-button - Setting operating parameters
1 x Display - Settings and monitoring
1 x Power switch -
AC main 1 x AMP CPC 45A connector - 45 A max (region-specific power cord provided)
Audio signal input
2 x Combo Jack/XLR-F - Signal input
1 x Analog/Digital input - Switchable Analog line/AES3 digital input on channel 2
Loudspeakers 2 x speakON - Neutrik NL4MD
2 x Rj45 socket - Ethernet + AESOP connection (DSP+AESOP version only)

Rear panel

Indicators and Controllers
1 x Push-button - Link channel pair
1 x Push-button - Toggle ANALOG input/AES3 input on selected connector


Dimensions (L x H x W) 483 mm x 44.45 mm x 475 mm (19.0 in x 1.8 in x 18.7 in)
Weight 12 kg (26.5 lb)

4 Year Manufacture Warranty

Contact the Sales office for more details on Bulk order and International shipping

Tsunami Sound & Power  Exclusive UK / EU

Factory Direct Shipping 5-8 days most countries