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.


SKU: 2dad80245ed6. Categories: , .

Additional Information


483 mm x 44.45 mm x 475 mm (19.0 in x 1.8 in x 18.7 in)


12 kg (26.5 lb)

Frequency Response

20 Hz – 20 kHz (±0.5 dB) @ 1 W, 8 ?


<0.5% from 1 W to full power (typically <0.05%)

Slew rate

50 V/μs @ 8 Ω, input filter bypassed

Crosstalk separation

> 66 dB @ 1 kHz

Damping factor @ 8 Ω

>5000 @ 20-200 Hz

Output Power

2,700 W
, 5200W, 9000 W / Channel @ 8 Ω/ 4 Ω / 2Ω