Crown 750W / 1000W / 1200W 15" Jack Hammer Series Professional Instrum – JG Superstore
MTX Audio JH3004 Jackhammer Series 90W x 4 @ 2-Ohm Class A/B 4-Channel Amplifier - Creative Audio
MTX JackHammer JH805 5-channel car amplifier — 37.5 watts x 4 at 4 ohms + 500 watts x 1 at 2 ohms at Crutchfield
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Amazon.com: MTX Audio JH10001 Jackhammer Series 1000W Monoblock Class-D Car Audio Amplifier : Electronics