Power Acoustik VA1-10000D Vertigo Amp vs Power Acoustik MOFO1-6KD Monoblock Amplifier

Both are Class D monoblocks from Power Acoustik, but they target different builds. The VA1-10000D is the bigger, more conventional amp: more RMS power at every impedance, a longer chassis, and a 40–180Hz low-pass that suits sub-only duty. The MOFO1-6KD trades output for a vertical tower footprint and a wider 80Hz–20kHz low-pass. Owners rate the VA1-10000D well overall, though its 10,000-watt max figure is a peak number and real output is the 3,500W RMS at 1 ohm. Buy the VA1-10000D for maximum sub power; buy the MOFO1-6KD when mounting space is tight.

• Choose the Vertigo VA1-10000D if you want the most RMS power for one or more subwoofers and have room for an 18-inch-long chassis.
• Choose the MOFO1-6KD if you need a compact vertical-mount amp that fits a tight trunk or panel and 2,500W at 1 ohm is enough.