I've using the Audison bit one for several years now, doing a nice job with the AudioTechnology 7", Scan speaks D3004/602000 and CDT 6x9 sub - all acive with mcintosh amps (will add back the Audio Technology 10" sub, bought a new sub stealth sub box).
I have an H900 in my storage and thinking of using it.
Do you think I will hear a difference?
It's a little bigger, and its controller much bulkier.
1. What do you think?
2. I'm thinking to replace the 4x50W mcintosh which I use for the tweeters with a much smaller amp without losing quality, any recommendations?

 

Do you think I will hear a difference?

Yes, but no idea if it will be better.