DC Speaker Protection & Turn On Delay+Thermal Switch Input option. 4BTL/8CH 
MDN-X120BL Stereo UnBalance IN to Balance Out Pre amplifier Low Noise Converter PCB
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MPA-HC2 PCB For Power Amplifier Class AB 70W 8Ω RMS
Price range: $10.00 through $40.00 Select options This product has multiple variants. The options may be chosen on the product page
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MPA-HC2 PCB For Power Amplifier Class AB 70W 8Ω RMS
Price range: $10.00 through $40.00 Select options This product has multiple variants. The options may be chosen on the product page