Very high quality amp! First of all the Infinity Kappa Four (IKF) came very well packaged with plenty of protective foam and bubble wrap which is a big deal to me because I have received damaged audio equipment in the past. Next, this Amp is aesthetically pleasing and feels good in your hands, it feels durable and substantial. You can can tell a lot about an amp just by picking it up, in my experience the heavier the amp is often the higher the quality amp. The IKF will most likely put out plenty of power for for your speakers with 100w at 4 ohms and 120w at 2 ohms ,that is what I am using it for but I imagine it works just as well with the bridged connections for subwoofers. This amp is perfect for someone who wants to provide lots of power to their speakers or subs with amazing sound quality and low distortion. The only thing I wasn't perfectly content with on the IKF was the speaker and power connection set screws are a Phillips head, I find an Allen or torques style bolt head is easier to work with and creates right connections.
Pros: Exceptional sound quality Materials provided (speaker wire to RCA adapters) Power capabilities
Cons: Phillips set screw (I prefer Allen or torques)
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I purchased the infinity Kapa 4 for a couple of 6-1/2" Alpine Speakers for the rear doors. I didn't bridge the amp thinking I may add two more rear speakers one day. I've spent $2,500 for front lows, miss and highs with amp and only $400 in the rear and the rear sounds just as good as the front. This amp impressed the heck out of me with the volume level I could get it too before distorting. If I could build my system again I would have four of these amps plus my sub amp. I'm now thinking Bridge the Infinity to push the front Morel 8-3/4"to replace the HD600 pushing them now. Really!
Pros: Amp is never ever hot. Very high volume with gain barely off bottom.
Cons: This amp has made me regret buying high dollar equipment.
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