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
Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply - Newegg.com
Amazon.com: OSD Audio 1000W Mono-Channel Class D Subwoofer Amplifier – Onboard DSP, 4-8 Ohm – SMP500 : Electronics
Kicker PXA300.1 300-Watt Waterproof Class D Mono Subwoofer Amplifier | World Wide Stereo
TXD10001 EZ-AMP plug and play 1000 watts mono subwoofer amplifier - Taco Tunes - Toyota Audio Solutions
Audiocontrol Lc-1.800 High-power Mono Subwoofer Amplifier With Accubass : Target