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
Mini 300W Mono Channel Digital Amplifier for Subwoofer / Full-Frequency Speaker | eBay
M03 Subwoofer Amplifier 200W Mono Single Power Subwoofer Amp – Fosi Audio
JL Audio Monoblock Class D Car/Marine Amplifier - XDM6001 | Abt
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Kicker CXA4001 400 Watt Mono Class D Subwoofer Amplifier
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lc-1.1500 high-power mono subwoofer amplifier with accubass® - All Star Car Audio
TXD10001 EZ-AMP plug and play 1000 watts mono subwoofer amplifier - Taco Tunes - Toyota Audio Solutions