Ruthless Audio Black 12.5K Amplifier | Monoblock | 12500W RMS

Unleash serious low end authority with the Ruthless Audio Black 12.5K Amplifier, a competition ready monoblock amp engineered to punish big subwoofer systems with relentless power and control. When brutal is not enough, the Ruthless Audio 12,500W RMS monoblock steps in to finish what the rest cannot. Built for bassheads, SPL competitors, and high power daily builds, this amp delivers a mind crushing 12500 watts RMS at 1 ohm at 14.4V, with the electrical backbone and thermal management to keep pushing when others tap out.

At the heart of the Ruthless 12.5K is an overbuilt, ruthlessly efficient design focused on one mission: maximum output with zero mercy. A precision tuned output stage, massive internal current paths, high speed MOSFETs, and a heavy duty power supply work together to deliver raw current on demand. That means harder hits, stronger control, and the confidence to lean on your system without living in fear of voltage drop chaos or thermal shutdowns.

Sound wise, this amplifier does not just get loud. It gets violent. The Ruthless 12.5K slams with thunderous low end authority while keeping the bass tight and controlled, so your subs move with purpose instead of distortion. If you are building a wall, chasing a number, or just want a high output system that stays composed under pressure, this is the monoblock that turns your setup into a statement.

Key Features and Specs

• Power Output at 14.4V

  • 12500W RMS at 1 ohm

  • 7500W RMS at 2 ohm

  • 4000W RMS at 4 ohm

• Tiffany Inputs

• 1/0 Power and Ground Inputs

• Input Sensitivity: 6V to 0.2V

• Frequency Response: 10Hz to 250Hz

• Phase Control: 0 to 180

• THD at 4 ohm: less than 0.01

Why Choose the Ruthless Audio 12.5K Monoblock

• Built for high power subwoofer builds that demand real RMS output

• Designed for SPL and bass heavy daily systems that need strong low end control

• Wide adjustment range for clean tuning, solid blending, and proper phase alignment

• Heavy duty inputs and signal path built for serious installs

If you are ready to step into true high power bass, the Ruthless Audio Black 12.5K Monoblock Amplifier 12500W RMS is not just an upgrade. It is a declaration.