Tru Technologies Tungsten Grande Class AB 4 Channel Amplifier

The Pinnacle of American Car Audio Engineering

New for 2025, the Tru Technology Tungsten Grande TG-RS4 HV v2.5 represents the ultimate evolution of the renowned Tungsten series, delivering uncompromising sound quality in a meticulously crafted 4-channel Class AB amplifier. Individually hand-built in La Crescenta, California, this amplifier embodies the perfect marriage of old school aesthetics with cutting-edge audio engineering, offering enthusiasts the legendary "slam" that has made Tru Technology a revered name among audiophiles worldwide.

Engineering Excellence Without Compromise

Built upon the foundation of Tru Technology's acclaimed BILLET and STEEL series heritage, the TG-RS4 HV v2.5 incorporates years of research and development to achieve a perfect balance of power, refinement, and cost-effectiveness. The amplifier features a calculated sequence of SMD and through-hole components, optimized for maximum performance while maintaining the company's unwavering commitment to sound quality. Every connection is strategically positioned along one side of the amplifier for ultra-clean installations and effortless adjustments.

Precision Craftsmanship and Thermal Management

The TG-RS4 HV v2.5 showcases a thermally optimized multi-piece heatsink design that combines sleek classic lines with superior heat dissipation. Constructed from locally sourced extruded aluminum—not overseas die-cast materials—each heatsink undergoes black anodization and precision CNC machining for an impeccable fit and finish. The 4-layer circuit board design enhances signal paths to deliver immense detail with incredible dynamics, while the Class AB topology ensures no thermal rollback, maintaining consistent power delivery even under demanding conditions.

The Tungsten Grande Advantage

As the "big brother" of the standard Tungsten amplifier, the Grande series delivers enhanced power, greater dynamics, and a higher level of refinement that satisfies the most discerning audiophiles. With its compact design philosophy, the TG-RS4 HV v2.5 excels in challenging installation scenarios without sacrificing the meticulous sound quality and reliability that define Tru Technology's reputation. This amplifier creates a new standard for both novice and experienced enthusiasts, offering world-class fidelity, amazing sonic transparency, and dynamic power that transforms any audio system into an extraordinary listening experience.