Jeff the Denon 4200 has two sub pre outs.
https://usa.denon.com/us/product/hometheater/receivers/avrx4200w
7.2 Channel Full 4K Ultra HD AV Receiver with 9.2 channel processing, Wi-Fi, Bluetooth®, Dolby Atmos, DTS:X, HDCP2.2/HDR, MultEQ XT32, 8/3 HDMI In/Out, AL24 plus