Tube Preamp with XLR Sub Out?

Anyone ever seen a Tube Preamp with an XLR Sub Out (and HT Bypass)? Just asking...

My McIntosh C2300 has 3 zones of XLR (and RCA) output. I use one to my mains and a second to a sub which then gets crossed over (is that a term?) at the sub. Works great. It also has a triggered HT bypass that automatically puts it into that mode when the trigger is activated. My B&K Processor had triggers that plugged right in. Many others do too.
Frank Van Alstine offers HT bypass as an option ($50 new/$100 retrofit) on all his preamps. Maybe he can also do a custom XLR sub out for you. Contact the AVA factory.