Zapco ST-5B 5聲道AB類全音域擴大機 4x70W + 1x250 RMS

The MOSFET power supply gives this amp a clean, stable output even when I push it hard. I was surprised how well it handles my aftermarket door speakers and a small sub without breaking a sweat.

The OEM speaker level inputs made hooking this up to my factory head unit painless, no line converter needed. It's a solid chunk of Class AB power that runs clean, and the 2 ohm stereo stability gives me room to upgrade my sub later.

Wired this in to replace an old 4-channel and the difference in my front stage is night and day. The OEM speaker level input saved me from running new RCAs, which was a huge relief in a car with a factory head unit. Dead quiet too, no hiss at idle.