Amazon.com: [Upgraded]AIYIMA B01 2.1 Channel Bluetooth Amplifier Receiver with Subwoofer Output,50W +50W +100W Amplifier Bluetooth 5.0/RCA/U-Disk DC12-24V Class D Integrated Amp with DC24V Power Adapter : Electronics
Stereo receivers with subwoofer output [2022 Guide]
Is it possible to connect an unpowered (no AC cable) subwoofer to a Yamaha RX-V483 AV receiver? If so, how? - Quora
How to Connect and Set up Two or More Subwoofers in Your Home Theater
How To Connect A Subwoofer To A Receiver Without Subwoofer Outputs