A CD or cassette radio produces no more than a maximum of nine "real" watts into four speakers given the power it's getting from the car's electrical system. So what if you want more than nine real watts to power each of your four speakers? You need an amp.It's true that amplifiers will give you more power, which will let you play your music more loudly. Amplifiers also improve the sound quality of your music at all volume levels.
An amplifier's job is to take a signal from a source (input) and make it larger (gain). The hard part is amplifying the signal without adding any "artifacts" or distortion. Amps must have a power supply strong enough to keep them going and must store enough power (current) to deliver all of the transients (drum kicks, power chords, the slap of a bass guitar) in the music.
Kicker ZX2002 AMP 2x100w - 2 Channel Amplifier
Number of Channels 2 / RMS Power (4 ohms) 70 watts x 2 chan. / RMS Power (2 ohms) 100 watts x 2 chan. / RMS Power (1 ohm) Not Stable / Bridged RMS Power 200 watts / Peak Power Output 400 watts approx. / Min. Impedance Unbridged 2 ohms / Min. Impedance Bridged 4 ohms / THD @ Rated RMS Power 1% / Speaker Level Inputs Yes / Amp Preamp Outputs Yes - 1 pair / Built-in Crossover Yes - HP / LP / High-Pass Crossover 50 Hz - 200 Hz / Low-Pass Crossover 50 Hz - 200 Hz / Subsonic Filter N/A / Signal-to-Noise Ratio 95 dB / Channel Separation N/A / Bass Boost 0 - 18 dB / Bass/Gain Remote N/A / Fan Cooled Yes / Fuse Rating 30A / Warranty 2-year Authorized Manufacturer's
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