you are absolutely correct! The CIAudio only has to show its virtues between 20 and (according to the manual) 600 Hz, a frequency spectrum with which D class amps can cope very well!! You’re also correct with regard to the challenge to get a firm grip on the bass towers. The CIAudio’s are doing a good job sofar (still burning in), better than there predecessors. Difficulty indeed is to “refind” the delicate balance between the bass and the horns. Main cause of this is the slightly different input sensitivity of the both poweramps (Manleys 0.75 Vrms and CIAudio 1 Vrms). I use an external volumecontrol on the Manleys to adjust their output towards the CI’s. This is a painstaking job, but rewarding. The bass is now fast, detailled, articulate and has lots of drive and slam. On a scale of 0 - 100, I’m at 90 in reaching the correct balance between bass and horns. Keep you both posted on this matter,

best regards, Hans

Putting the CIAudio on the bass towers of the Campanile only reveals its character below 700 Hz or so, if I remember correctly. It is those upper frequencies where the digital amps, all solid-state amps in fact, have their little troubles.

The bass towers on the Campaniles are defintiely a challenge - to tighten their response up as much as possible without messing with their delicate balance with repsect to the midrange horn - a balance which was so amazingly well crafted by the factory. … Please let us know how it all works out!

Best regards (to you too, Neli )
-Mike.

What you say about the Kharma’s, is also true for the CI’s. Lots of drive and control, which is necessary to control the woofers of the Campaniles. I have considered the Kharma’s, but they don’t have enough power to control the 8 woofers. The CI’s have an output of 325 Watt in 4 Ohm. They also seem to match sonically very well with the big Manleys. It is funny though to see such little boxes besides the Manley “giants”. With no other amplifier I have heard so much slam and drive in the bass of the Campaniles as with the CI’s. I’m curious what the sound of the CI will be in a week or two because the burn-in time is about 300 hours. Keep you posted on this matter!!

Best regards, Hans

It’s so nice to see you here on the ‘blog.

I have only heard the CIAudio at shows, so I can’t really say anything definitive … but the little Kharma amps are really nice amps, they’re quiet and lively and not in the least aggressive, but they have drive and control — they are the only of these little amps I really *like*. I like them as an amplifier, regardless of the technology. Given your location in the world … I really encourage you to give them a listen.

Best regards,
-neli

how are you doing??
Funny to see that you’re in Class D amps also!! I’m auditioning now the CIAudio D200 amps on the woofers of the Campaniles. I must say that they are very engaging amps. Maybe worthwhile to try for you??

Best regards, Hans