Audison Forza M4D Amplifier

Audison AF M4D | 4-Channel Class D Amplifier | 1040W Total Power | 4 x 260W @ 2Ω | Hi-Res Certified | Bridgeable

The Audison AF M4D is a premium 4-channel amplifier tailored for high-end car audio systems using external DSP processors such as Audison AF bit amplifiers or the bit One HD Virtuoso. This amplifier follows a “straight wire” architecture, eliminating internal crossovers or signal conditioning to maintain the highest signal fidelity.

With output ratings of 160W x 4 @ 4Ω, 260W x 4 @ 2Ω, and 520W x 2 bridged @ 4Ω, the M4D offers a powerful and flexible configuration for speakers, midbass drivers, or subwoofers. It delivers Class D clarity, high switching speeds, and advanced filtering that exceed the expectations for compact car amplifiers — earning it Hi-Res Audio certification from the Japan Audio Society.

Key Features

• High-Power Output:
  • 160W x 4 @ 4Ω
  • 260W x 4 @ 2Ω
  • 520W x 2 bridged @ 4Ω
• Total Power Output: 1040W RMS @ 14.4V, 1% THD, all channels driven
• Purpose-Built for External DSP Control:
  Seamless integration with Audison AF bit series DSP amps or processors like the bit One HD Virtuoso.
• Straight Wire Architecture:
  No onboard crossovers or EQs; full signal control is left to your external processor.
• Compact D-Class Amplifier:
  Features an exceptional power-to-size ratio with up to 83% efficiency and 0.68 W RMS/cm³.
• Hi-Res Audio Certified:
  Capable of audio reproduction well above 40 kHz, ideal for high-resolution streaming and media.
• Bridgeable Design:
  All channels can be bridged in pairs for higher power and installation flexibility.

ADT Technology Advantages

Audison’s ADT (Audison D-Class Technology) redefines Class D sound through:

• High-Frequency Switching:
  Reduces distortion and pushes unwanted frequencies far outside the audible band.
• 4th-Order Analog Low-Pass Filtering:
  Provides superior EMI control and phase accuracy versus typical 2nd-order filters.
• High-Tolerance Components:
  Maintains performance across temperature extremes and extended usage.
• “All Channels Driven” Design:
  Power supply is engineered to sustain full power output across all channels simultaneously.
• Universal Speaker Simulator (USS):
  Ensures reliable integration with OEM head units by simulating speaker loads on high-level inputs.

Recommended Accessories

• VCR-S2
  Optional subwoofer volume controller with a rugged Molex connector for real-time bass level adjustments.
• AF LINK Cable
  Plug-and-play cable for connecting DSP outputs from AF bit amps to AF D amps with ease.
• AFM – CLK Cooling Kit
  Add-on cooling solution with fan and bracket for enhanced heat dissipation in tight installation spaces.

Box Contents

• REMOTE IN-OUT Cable – Manages power-on and energy save functionality
• SPK OUT Cable (4CH) – Labeled cable pairs to connect speakers
• PRE-IN Cable (2CH) – RCA interconnects for use with aftermarket head units
• SPEAKER-IN Cable (4CH) – High-level input cables for OEM source integration
• Forza Install Kit – All required mounting and installation hardware included

Use Case & Compatibility

The AF M4D is ideal for:

• Expanding a DSP-based multi-amp setup
• High-fidelity front-stage amplification
• Compact installations where space and heat dissipation are critical
• Bridged use for powering midbass drivers or compact subwoofers