Re: Why is an amp so important? What differences will I notice? Kappa Five, worth it?
Will you notice an actual difference in the sound of two amps of any relatively decent quality? No. Unless you already have every other part of your system perfect.
As for the pricing difference, what you're paying for is reliability, and power output. If an amp says 500 watts output, then later specifies that 500 watts is the maximum output at 1 ohm, then upon testing you find that the maximum voltage (at 100% clipping) is 20 volts, you now know the maximum, 100% clipped wattage is 400 watts at 1 ohm. The maximum RMS could then be 200 watts. But then the thing probably has too small of a heatsink and is horribly inefficient so at 200 watts it'll overheat and eventually it turns out that 50 watts at 4 ohms is the only way to run it without overheating. So you're paying a tenth as much and getting a tenth the power.
Tuner/screen/DVD ~ Eclipse AV5101 + Eclipse DV3101
CD player ~Eclipse 5961 6-disc in-dash changer AND Eclipse 5122 12-disc trunk mount changer
Equalizer/DSP ~Eclipse 39011
Front Speakers ~MB Quart QSD 216 6.5" Components
Front Amp ~Planet Audio BB150.2
Bought From: Eclipsefool (A+), bradknob (A), Jh8909 (D+), little stuff from: James Bang , fatboyracing, JarvisB
Want to buy: Planet Audio PC68NEO 6.5" components, Eclipse Commander/GPS