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Alpine R-A90S R Series 6-channel car amplifier — 75 watts RMS x 4 at 4 ohms + 250 watts RMS x 2 at 2 ohms at Crutchfield
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Amazon.com: ATOTO CA-AEC02 Car Audio Amplifier, 4 Channel, Class A/B, 392 Watts Max Power, 4 Ohm, Built-in Line-Out Converters, Great Sound Quality, Perfect for Car Use : Electronics
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Amazon.com: BOSS Audio Systems PT3000 2 Channel Car Amplifier – Phantom Series, 3000 Watts, Full Range, Class A/B, 2-4 Ohm Stable, MOSFET Power Supply, Bridgeable : Electronics
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Kenwood Excelon XR901-5 Reference Series 5-channel car amplifier — 60 watts RMS x 4 at 4 ohms + 600 watts RMS x 1 at 2 ohms at Crutchfield
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GM-D1004 - 4-Channel - Class D, 400w Max Power - Compact Bridgeable Amplifier | Pioneer Electronics USA
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Atoto Car Amplifier Max 60w Power 4 Channel 400 Watts Max Power 2/4 Ohm Stable Class Only Compatible Atoto Car Radio Amplifier - Car Radios - AliExpress
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Clarion XC2510 Compact 5-channel amplifier — 50 watts RMS x 4 at 4 ohms + 300 watts RMS x 1 at 2 ohms at Crutchfield
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Kenwood Excelon XM802-5 5-channel powersports/marine amplifier — 50 watts RMS x 4 at 4 ohms + 500 watts RMS x 1 at 2 ohms at Crutchfield
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Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302 : ID 2130 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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