Facmogu S-299 Amplificatore di Potenza Bluetooth 4.1CH con Uscita Subwoofer Attiva (NON
(For this S-299 amplifier subwoofer output, you have to connect with ACTIVE Subwoofer. WARNING: A PASSIVE Subwoofer is NOT ACCEPTABLE for this amplifier.). (NOT surround stereo sound, perfect for listening to music. ).