Skar Audio RP-1500.1D Review – Stable and Powerful

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Skar Audio designed the RP-1500.1D monoblock subwoofer amp to deliver some serious current to demanding subs, even in competition conditions, with a good example of this approach seen in the amp’s one (1)-ohm-stable specification. Additionally, this amplifier boasts premium internal circuitry to make it powerful and reliable, including its high-speed MOSFET power supply and advanced PCB board layout.


  • Class D MOSFET technology
  • Blistering peak power at one (1)-ohm
  • Highly efficient heatsink design allows for maximum reliability and performance


  • Some reports of clipping when pushed hard
  • Wattage calls for larger gauge power cable than 2awg supplied
  • Connectors very close to each other, making installation somewhat challenging


This monoblock subwoofer amplifier was engineered specifically by Skar Audio to be dominant in both raw power output and reliability as compared to other amps on the market in the RP-1500’s class.

From its high-speed MOSFET power supply to its affordable price tag, the RP-1500.1D is great for powering either a “daily driver” subwoofer stage or a full-blown, amps-and-subs-to-the-wall competition system – in any vehicle.

Built-in Tone-Shaping Controls

The Skar Audio RP-1500.1D allows full reign over the amp with a built-in user panel, featuring a bass EQ switch (0, +6, +12dB) and variable adjustment tunings for gain level, low-pass filter and subsonic filter.

There’s also four-way protection circuitry, providing competitors and casual users alike peace of mind knowing they are protected against damage to the amp based on a number of factors – from electrical shortages and overheating to low voltage and more.

The amplifier comes with a remote subwoofer level control and bass knob, with power wire included.


Skar Audio’s RP-1500.1D found its place onto our Recommended One (1)-Ohm Stable Amps list as “Our Pick,” so it’s no surprise we’re singing the praises of the 1500.1D.

The 1500 was designed to deliver ground-pounding power in the cleanest way possible, and as such the amp remains a good choice for elaborate systems that need lots of current.

Pumping out over 1,500 watts at one (1)-ohm, the 1500 can be used to power a single 1,500-watt subwoofer or two 750-watt subs, all delivered in style via a thick metal chassis boasting aggressive heatsinks that keep the amp cool during demanding peaks.

Features & Specifications

  • Max Power Output: at 1 Ohm: 1,900 Watts
  • RMS Power Output: at 1 Ohm: 1,500 Watts
  • Amp Class: D
  • Bridgeable: N/A
  • Dimensions: 14.75-inches (L) x 6.25-inches (W) x 2.25-inches (H)

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