Tpa3116 100w Subwoofer Digital Power Amplifier | Subwoofer Digital Mono Amplifier - Home Theater Amplifiers - Aliexpress
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Dayton Audio SA100 100W Subwoofer Plate Amplifier
M04 Mono Amplifier Subwoofer Amp 100W With Bass Power Amplifier – Fosi Audio
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