Kenwood X502-1 X-Series Class D Mono-Channel Power Amplifier – Car Audio Centre
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 : Amazon.co.uk: Electronics & Photo
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Helix D ONE - 1 Channel/Mono Amplifier
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