Power Acoustik RZ1-3500D Amplifier vs Power Acoustik RZ5-2500D Amplifier

The RZ1-3500D is a dedicated subwoofer amp: 2,100W RMS at 1 ohm and 1,400W at 2 ohm, with a 10-50Hz subsonic filter and a dash-mount gain knob. The RZ5-2500D is a five-channel amp that runs four speakers plus a sub from one chassis, but its sub channel tops out at 600W RMS at 2 ohm. Buy the RZ1 if you already have a separate amp for your speakers and want heavy bass. Buy the RZ5 if you want one compact amp to drive a whole basic system. Owners rate the RZ1 well on output for its size, while the RZ5's appeal is simplicity and a small footprint, not raw power.

• Choose the RZ1-3500D if you have a separate amp for your speakers and need a strong mono block for one or two subwoofers.
• Choose the RZ5-2500D if you want one compact amp to power four speakers and a subwoofer without running two amps.