Does anybody make...

@roadwhorerecords ...yes , I believe so, thx

@jrpnde ,,, Awesome... Thanks

Okto Dac 8pro dac, 8 channels dsp. I owned Dac8 stereo, 2 channel version. One great dac, price performance ratio out of this world. Unfortunately, I heard not taking orders at present due to excessive demand.

   sc2....I was looking for a device for my system and didn't quite know how to proceed. By chance I came across the name of Marchand Electronics. It is based in Rochester,NY which is where I live. COINCIDENCE! I sent am email to them and explained what I was looking for. Since they have quite a large catalog I didn't where to start. Got a reply from the owner (Phil Marchand) and he explained what they could do.

    It is a class operation and do all necessary to ensure customer satisfaction. Can't go wrong if you decide to deal with them.

Your looking for an Active Crossover. What you're trying to do won't work. All the Macs have the outlets they are not separate. If you turn down one pair of outlets you turn them all down. First Watt make two active crossovers, one for OB and a 2 way.  One as a standard 3 way crossover.

STL makes an active tube 2-3 or 4 way crossover. 

In the 70s I ran a pair of C8s (I think) mono tube preamps. 

You can run more than one preamp.. I've ran a pair of C20 one for Bass and one for mids and highs..

Regards

I think what you want is a "Audio Distribution Amplifier", which connect among the preamp stereo outputs to the inputs of power amps.

Rolls-DA134-4-Channel-Distribution-Amplifier