Crescendo BassClef-4K Amplifier

The Crescendo BassClef-4K is part of the newly redesigned BassClef series, raising the bar for high-power monoblock amplifiers. Built on years of proven performance, the BC-4K combines massive output, superior efficiency, and reliability in a sleek new heatsink design. Stable down to 0.5 ohm and engineered for competition-level installs, this amplifier is a powerhouse for serious bassheads.

Key Features

• Stable to 0.5 Ohm with sufficient electrical.
• Up to 17v Capable for extreme builds.
• Proprietary Multi-Piece Thermal Optimized Heatsink – patent-pending interlocking CNC engraved top plate.
• 2-Stage Copper Anodized Top Plate – removable for custom color matching show builds.
• Silver-Plated Tiffany RCA Inputs for noise-free signal transfer.
• Dual 1/0 Power & Ground Inputs for maximum current flow.
• Dual 4-Gauge Speaker Terminals – easy parallel wiring (+ + / - -).
• Overbuilt Power Supply with heavy copper traces and military spec PCB for vibration resistance.
• Handwound Transformers & Inductors for durability under extreme conditions.
• High-Grade Electrical Components with 3% tolerance for accuracy and longevity.
• 4-Stage Intelligent Protection Circuitry for peace of mind.
• Warranty: 1 year @ 1 ohm, optional 2 year @ 0.5 ohm.

Power Ratings (RMS @ 13.8v)

• 1 ohm: 4000W
• 2 ohm: 2000W
• 4 ohm: 1200W

Certified Amp Dyno Results

Tested with Mechman 370a alternator, 8x HPL75 AGM batteries, and Crescendo 1/0 OFC runs:

• 0.5 ohm: 5710W @ 13.1v
• 1 ohm: 4416W @ 13.3v
• 2 ohm: 2529W @ 13.4v

Dimensions

• Main Body: 23 3/4" x 9 1/8" x 2 7/8"
• Overall Length (including terminals): 25"

Why Choose the BassClef-4K?

The BassClef-4K delivers the perfect combination of raw power, precision engineering, and thermal efficiency. Whether you’re competing in SPL events or building a show-quality system, this amplifier offers unmatched performance and resilience in the 4,000W class.