Yamaha wxa- 50 is streaming 2 channel integrated amp and DAc with sub out. But doesn’t say if it has bass cut off high pass etc. I think you’re right, might be hard to find a 2.1 with bass management

M60ti Hafler9505 & JFET Pre,Axiom Transformer. M3 Marantz PM7200 Dual 606 Denon 2700 M2 Yammy RX595