This little alpine amp is Amazing! For the money and the convenience there is nothing out there that can compete. My piece of advice is use this amp bridged at 90 watts rms x 2. Using the 45 x 4 is ok for increasing clarity but will only give you a small power boost over your head unit. At 90x4 this amp comes alive and can compete with some bigger wired amps in power and clarity. I definitely recommend this amp for a small component set and it will bring it to life.
Pros: Definitive Clarity and power boost at 90w x 2.
Cons: 45 watts x 4 is just ok. I wouldn't buy this amp if I wasn't going to bridge it.