Kenwood P-XW1221SHP 12" Preloaded Subwoofer Enclosure and X502-1 Mono Amplifier
Kicker 46CXA8001T Mono Subwoofer Amplifier and 46CXARCT Dash-Mount Wired Remote
TXD10001 EZ-AMP plug and play 1000 watts mono subwoofer amplifier - Taco Tunes - Toyota Audio Solutions
Amazon.com: Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX : Electronics
1) Kicker C10 Subwoofer Single 10" Vent Ported Sub Box Enclosure Bundle with Harmony Audio HA-A400.1 Mono Amplifier - Walmart.com