Audison Forza AF C4D Amplifier

Audison AF C4D Amplifier – 4-Channel Class D Compact Power with Hi-Res Audio

Product Highlights
AF C4D Amplifier | 600W Total Power | 4 x 150W @ 2 Ohm | Fully Bridgeable Class D Amplifier

The Audison AF C4D is a powerful 4-channel amplifier engineered to expand any system featuring AF bit processor amplifiers. With its compact form and advanced D-Class circuitry, it delivers superior power and sonic clarity. Designed for integration with both Audison AF bit amplifiers and standalone processors like the bit One HD Virtuoso, the AF C4D is the ideal solution for audiophiles seeking seamless scalability and high-resolution sound.

This fully bridgeable amp delivers 90W x 4 @ 4Ω, 150W x 4 @ 2Ω, and up to 300W x 2 @ 4Ω bridged (RMS @14.4VDC, 1% THD, all channels driven). Its ultra-compact design includes “straight wire” architecture—meaning no analog preamp functions—making it a perfect companion for external digital processors.

With Hi-Res Audio certification, the AF C4D delivers extended bandwidth up to 40 kHz, providing unparalleled sound quality from today’s high-resolution audio sources.

Key Features

• Advanced D-Class Technology: Equipped with Audison’s latest-generation ADT (Audison D-Class Technology), offering unmatched audio performance.
• Ultra-Compact Efficiency: Exceptional power-to-volume ratio up to 0.47 W RMS/cm³ with up to 81% efficiency.
• Hi-Res Certified Performance: Extended frequency response up to 40 kHz, fully compliant with Japan Audio Society Hi-Res standards.
• Flexible Bridging Options: Bridge each output pair for more powerful channel configurations.
• Ideal for External DSP Systems: No analog filtering ensures pure signal from any high-end processor or DSP.

Audison Proprietary Technologies

• ADT – Audison D-Class Technology
  • Using a high-speed switching frequency twice that of standard Class D designs, ADT minimizes distortion and noise. It incorporates precision-tolerant components and a 4th-order analog low-pass filter for cleaner signal and better EMI control. The result is audiophile-grade performance in a space-saving format.
• All Channels Driven Design
  • Audison amplifiers deliver consistent rated power across all channels simultaneously, made possible by a robust power supply designed to handle total channel output without compromise.
• Universal Compatibility
  • Equipped with Universal Speaker Simulator (USS) on high-level inputs for compatibility with any OEM head unit or factory system.

Included Accessories

VCR-S2 Subwoofer Volume Control

An optional volume control for subwoofers that allows real-time adjustment based on listener preference or music genre. Built with a durable Molex connector for reliability.

AF LINK Cable

Dedicated cable for seamless connection between AF bit amplifiers (with DSP) and AF D amplifiers, using the PRE IN input.

AFC-CLK Cooling Kit

Specifically designed for the Audison Forza Compact amplifier line, this accessory includes:

• Metal bracket with airflow vents
• Intelligent cooling fan with temperature sensor
• Smart thermal activation to prevent overheating in tight installation spaces

Forza Box Contents

• REMOTE IN-OUT AF AMP Cable: Manages power-on and energy-saving mode.
• SPK OUT 4CH Cable: Labeled speaker wire set for easy AF M5.11 bit connection.
• PRE IN Cable 2CH: Stereo RCA pair for connecting aftermarket sources.
• SPEAKER IN Cable 4CH: Labeled wire pairs for high-level OEM connections.
• Forza Install Kit: All essential mounting and connection components.