Fohhn AM-4.4 Amplifier
Purchase price
The Fohhn AM-4.4 is a professional-grade amplifier that combines high power, installation flexibility, and reliable performance. With its advanced features and solid construction, this amplifier is an ideal choice for large-scale sound systems in demanding environments.
Subcategory: Fohhn
Fohhn AM-4.4 – Four-Channel Power Amplifier for Professional Sound Systems
The Fohhn AM-4.4 is an advanced, four-channel power amplifier designed for professional sound reinforcement systems, offering high performance, reliability, and installation flexibility. This amplifier is perfect for a wide range of applications, including concert halls, churches, theaters, conference rooms, music clubs, and any venue that requires powerful and flexible audio systems. The Fohhn AM-4.4 combines modern Class D amplification technology with exceptional sound quality, ensuring efficient and reliable operation in all conditions.
The Fohhn AM-4.4 delivers four channels, with the option to bridge channels for additional configuration flexibility. Each channel provides 500 W of power at 4 Ohms, making the amplifier powerful enough to drive a wide range of speakers, both in permanent and mobile installations. The amplifier also features advanced protection systems, such as overload, short circuit, and thermal protection, ensuring long-term stability and durability.
| Description | Value |
| Type | Four-channel Class D amplifier |
| Applications | Concert halls, churches, theaters, conference rooms, clubs |
| Power Handling | 4 x 500 W at 4 Ohms |
| Bridging | Yes, channel bridging capability |
| Frequency Response | 20 Hz – 20 kHz |
| THD | < 0.05% (at full power) |
| Protection | Overload, short circuit, thermal |
| Cooling | Active, temperature-controlled |
| Inputs | Balanced XLR |
| Outputs | Speakon, binding post terminals |
| Power Supply | 230 V AC |
| Dimensions | 88 x 482 x 390 mm (2U, 19″ rack-mount |
| Weight | Approximately 9.5 kg |
Fohhn Audio AG is a German company headquartered in Nürtingen near Stuttgart, founded in 1993 by musicians and sound engineers. For over three decades, Fohhn has been designing and manufacturing complete sound reinforcement systems — from speakers and subwoofers to power amplifiers and signal processors. Through full control of the manufacturing process carried out entirely in Germany, the company ensures the highest quality standards, confirmed by ISO 9001 (quality management) and ISO 14001 (environmental management) certifications.
The AM-4.4 is a four-channel Class D power amplifier designed specifically to drive Fohhn speakers in professional sound systems. Each channel delivers 500 W at 4 Ohm, and channel bridging capability allows flexible system configuration depending on the needs of each installation. The Class D design means high energy efficiency — the AM-4.4 generates less heat than traditional amplifiers, allowing installation in enclosed rack cabinets without overheating risk.
Advanced overload, short-circuit, and overheat protection circuits guarantee stable, trouble-free operation even in the most demanding conditions — during multi-hour concerts, theatrical performances, or conferences. The intelligent cooling system actively monitors temperature and adjusts fan speed, minimising both noise and the risk of failure. The solid 19″ rack-mount enclosure (2U) ensures easy integration with existing equipment racks.
The AM-4.4 is optimally matched to drive Fohhn AT and LX series speakers, creating a fully integrated single-manufacturer sound system. Balanced XLR inputs and Speakon outputs provide professional, reliable connectivity, while matched power and impedance parameters between amplifier and speakers eliminate damage risk and ensure optimal sound quality. This solution is particularly valued in permanent installations where long-term reliability and system coherence matter most.
