Best Unknown Car Amplifiers

The Key Smart Amplifier - The biggest advance - in the smallest package. Introducing the KEY smart amplifier and audio processor in one. Press the selector, and the microphone goes to work. The KEY uses a powerful internal computer to deliver dramatic improvements in realism and soundstage. A massive 40-band equalizer improves tonality. A 24dB crossover re-defines the capabilities of each speaker. Time alignment delivers unheard realism. The concert quality of your factory stereo is revealed! What would take hours for a professional to achieve happens in a matter of minutes. All automatically. All with the press of a single button. Measuring less than eight inches long and only two inches high, the KEY180.4 fits nearly anywhere. Mount it behind your radio, under the seat, or in your trunk with ease. The KEY180.4 is one of the first amps fully compatible with newer vehicles using start-stop systems. The amplifier also features FIT2 (Fail-Safe Integration Technology), providing compatibility with nearly every stock and aftermarket radio on the road today. 180 Watts Of Power (45x4) Auto EQ Microphone With Selector Switch Included Compatible with Start/Stop Vehicle Technology FIT2 Technology Included Turn On Via Remote 12v Signal Or DC Offset Auto 40-Band Equalizer Auto Gain Adjustment Auto Speaker Size Detection 24dB Crossovers 60/180/120Hz High Pass Filter (Defeatable) Specifications Power (watts/ch), 4 Ohm stereo 45x 4 Microphone/Kicker EQ button included Standard dimensions(H x W x L) 1-11/16 x 2-3/4 x 7-3/8 Metric dimensions(H x W x L) 4.3 x 7 x18.7 Frequency Response (Hz): 20-20k, +0/-1dB Input Sensitivity: high level 250mV-10V Signal-to-Noise Ratio:>90dB, a-weighted, re: rated power Active Crossover: 24dB/octave, selective high pass or all pass @ 60,80, or 120Hz What's in the Box: 1 - 4 channel power amplifier 1 - microphone 1 - microphone cable with switch 1 - fuse holder 1 - manual and installation hardware