Jbello is right. 104db efficient horns do not need that much power. They will get loud enough for a half deaf metal head with 20 watts. Spend money for increased quality of watts not increased number of watts.
The new K-horns use plastic horns and different crossovers from the originals. If you can find the metal horn versions with the AA crossovers you will be a little more pleased with the sound.
I know a guy that uses an Audio Refinement Complete integrated on older K-horns and it is more than enough to bring the house down. The new Complete (Alpha)has pre-out to feed a subwoofer which you may find you want down the road. The only drawback to the AR Complete with the horns is that the volume pot has a steep slope that makes it real loud real fast. With the horns you may find this true of lots of set-ups.
Good luck!
The new K-horns use plastic horns and different crossovers from the originals. If you can find the metal horn versions with the AA crossovers you will be a little more pleased with the sound.
I know a guy that uses an Audio Refinement Complete integrated on older K-horns and it is more than enough to bring the house down. The new Complete (Alpha)has pre-out to feed a subwoofer which you may find you want down the road. The only drawback to the AR Complete with the horns is that the volume pot has a steep slope that makes it real loud real fast. With the horns you may find this true of lots of set-ups.
Good luck!