KASA500 is a powerful Class-D Dual 250WPC subwoofer amplifier
KASA500 Software update tool
KASA500 is a powerful Class-D Dual 250WPC amplifier. This DSP controlled system amplifier is optimized to deliver thunderous bass from KEF Ci subwoofers. With both line and speaker level inputs, and DSP configurable pass-through with optional high pass filters – the KASA500 is versatile and can be deployed in limitless system configurations. To allow for future flexibility KEF engineers may update the KASA500 DSP firmware to optimize performance with additional KEF speakers. The KASA500 Programmer* is a proprietary tool for updating the KASA500 firmware. NOTE: KASA500 software requires a "USB Type A Male to USB Type A Male cable" for connection between your computer and the KASA500.
Download KASA500 Programmer
The latest KASA500 Firmware provides settings for KEF Ci subwoofer models Ci3160RLb-THX, Ci200QSb-THX, Ci200TRb, Ci4100QLb and Ci250RRb with THX certified performance (if applicable) in both mono and stereo mode.
Download KASA500 Firmware Rev. 10.05
Download KASA500 EQ setting dip switch chart
KASA500 manual includes installation diagrams for both home theater and music sub/satellite installations.
Download KASA500 user manual
* KEF KASA500 Programmer currently runs only on Windows based machines.
With feet : 92 x 432 x 304mm (3⅝ x 17 x 12 in.)
With rack ears; 2 EIA rack space: 88 x 483 x 304mm (3½ x 19 x 12 in.)
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Please visit our Ci Software Download page for more details.
These KEF KASA amps surprised me. I had heard they were good, but it ended up making my two in-wall subwoofers be heard (and felt) with a punch compared to before. It's as if I changed subwoofers altogether. I ended up tuning the phase and crossover knobs on the KASA for a much improved sound. Before, I had my in-wall subs on another cheaper amp, but you get what you pay for I guess and just figured the subs were doing all they could. All I know is that the bass can now be heard. The only downside is that I now have to find the subtle "rattles" that have appeared in the room due to the vibrations from the bass (to no fault of the amp or subs). Now I want one more for two more subs for a total of 4 for movies to really rumble!