Active Crossover Sample Rate and HiRes DACs/S

Been using a Driverack PA2 in a 3 way (2 way stereo with subs) with some Luxman amps separately driving the horns and woofers and the low outputs driving a Velodyne servo sub. Crossover points are 80hz and 1.5khz for sub/mid-woof/highs using butterworth 12db and low and high ends being 'out'

My questions is with to the bit-rate of the DSP/Crossover. It's listed as 48Khz/24bit for the PA2 and 94K/24 for the Venu360.

What I am wondering is if, for source material, such as 24/192k or DSD 64 or 128 coming out in analog form from the DAC and going into the DSP is losing resolution as it's processed by the PA2 before it's going out to the amps?

Don't know if the ADC/DAC conversion required to split the signal into highs/mids/lows perhaps lowering the resolution and would I benefit from moving up to a 96khz crossover? (such as Venu360)

Also, are there any 24/192khz crossovers?

BTW, I can hear audible differences between 48k/44.1k material vs. DSD or 24/192 PCM audibly through this setup.
 
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