Mt. Olympus

This is the top of the mountain. When your system design demands the absolute best, you will not suffer the excuses of mortals – Mt. Olympus from Hifonics has been engineered over two decades for a perfect balance in sound quality and power.

Ultra D-Class™ technology is at the very nerve center of our flagship Mt. Olympus. The proprietary “Ultra-D” design uses high-speed microprocessors with proprietary D/A conversion algorithms to efficiently control the Mt. Olympus current consumption. At very high listening levels. Hifonics Ultra D-Class results in lower distortion, higher current efficiencies and less heat than conventional D-Class amplifier designs. Compared to the competition, Ultra D-Class amplifiers are easier on your car’s charging system.
Super A/B Class™ - Big power alone does not make a great system design; This is why Hifonics developed Super A/B Class™ as a perfect sound quality design for the stereo amplifiers to match the Mt. Olympus models that utilize the Ultra D-Class™ circuitry. Super A/B Class™ designs are based on top 1% tolerance grade components. Super A/B Class insures the Mt. Olympus stereo amplifiers fill your needs for high-power and ultra-high end sound.

The perfect system design, Mt. Olympus with Ultra D-Class™ on the subwoofer system and Super A/B Class™ for the mids and tweets.
CEA Compliant CEA Compliant

Colossus™ 6.5K Mt Olympus Amplifier

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Colossus 6.5K

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Availability: Discontinued

Part#: Colossus 6.5K


3200W RMS Dual Monoblock Ultra Class D


Part #: Colossus 6.5K | SKU: 0806576220169 | Category: Mt. Olympus

Mount Olympus 3200W RMS Ultimate Performance Dual Monoblock Ultra Class D Amplifier.


The Mt. Olympus amplifiers are all CTA-2006B compliant. CTA stands for Consumer Technology Association and Hifonics has been a member for decades. In 2016 the program previously known as CEA Certification changed to CTA-2006B to reflect the changes to the organization and their initiatives.

Specifically for the Hifonics Mt. Olympus amplifiers, the Primary Output Power should, according to CTA2006, be measured with 14.4V DC supply, a 4-ohm load and with 1% or less total harmonic distortion in the output.

For more information go to the Consumer Electronics Association website


Part #: Colossus 6.5K | SKU: 0806576220169 | Category: Mt. Olympus
  • Power @ 1-Ohm
    1625 watts x 2
  • Power @ 2-Ohms
    1125 watts x 2
  • Power @ 4-Ohms
    625 watts x 2
  • Bridged @ 2-Ohms
    3250 watts x 1
  • Bridged @ 4-Ohms
    2250 watts x 1
  • Frequency Response
    15-250 Hz
  • Signal to Noise Ratio
    >95 dB
  • THD %
  • Variable Hi-Pass
  • Variable Low-Pass
    35 - 250 Hz
  • Variable Subsonic Filter
    15-35 Hz
  • 45Hz Bass Boost
  • Amplifier Fusing
    External (300-350A recommended)
  • Input (RCA Jack)
  • Remote Level Control
  • Dimensions (L x H x W)
    23-3/4"L x 9"W x 2-12/16"H

System Includes

Part #: Colossus 6.5K | SKU: 0806576220169 | Category: Mt. Olympus
More info in development & coming soon!

Features & Benefits

Part #: Colossus 6.5K | SKU: 0806576220169 | Category: Mt. Olympus
  • Dual Hybrid 2-Channel Ultra Class D Car Amplifier
  • Pulse Width Modulated MOSFET power supply
  • Wired CLSR-1 remote bass level control included
  • LED power (green) and protect (red) indicators
  • 2/1 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-Way System Protection circuitry (thermal, slipping, and speaker short protection)
  • Heavy duty aluminum alloy finned heatsink for extreme heat dissipation
  • Blue LED Hifonics badge
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Phase Shift: 0-180°
  • Damping factor: >350
  • CTA-2006 Rated for RMS Power
  • Old School Design
  • Accu-Cross™ Electronic Crossover
  • Molded Angled Terminals
  • CTA-2006 Compliant
  • Colossus™
    Colossus™ is a trademark of Maxxsonics USA Inc.


Part #: Colossus 6.5K | SKU: 0806576220169 | Category: Mt. Olympus
More info in development & coming soon!


Part #: Colossus 6.5K | SKU: 0806576220169 | Category: Mt. Olympus
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