Stereo pre-amps with dual outs for bi-amping and a subwoofer line out


Do they exist? Maybe I’m looking in the wrong places, but I haven’t seen any. 

Definitely not looking for an integrated or AV Receiver.
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If you like tubes the PrimaLuna Dialogue Premium has extra pre -outs. I have a couple of subs hooked up this way but used to use an audioquest splitter on my last preamp with the same results. 
If the outputs are just jumpered at the preamp is there really any reason to bi amp. I can see it in a fully active system with external crossovers. I had a 3 amp Linn System like that and heard the difference. I can never really  say I have heard a difference with bi amping. Put the money into one better amp. 
All four can be set to full range or two can be set to high pass 50 to 250 hz and two can be set to low pass 50 to 250 hz