Passive biamplification questions


I want to know your opinion about the use of two stereo amplifiers in vertical passive biamplification.
My speakers have biwirable or biamp. connectors and my preamplifier has two main outputs, so I can go to passive biamplification without problem.
The passive biamplification really represent an upgrade ?
If the answer is yes: Why it is too difficult to find system that use it ?
Please let me know your experience and opinions.
Thanks,
Carol
carolina221666bc

Showing 1 response by unsound

If one is using two class AB or A/AB amps the more efficient drivers which are usually the higher frequency drivers which our ears are more sensitive to may have more class A amplification available to them which may sound better. IMHO more often than not and the specific cross-overs may have a lot to do with this, using identical amps is prefered.