The most powerful amplifier in its category. RCF's improvements in the design of their transducers have made them stronger and more efficient, and the amplifier follows this evolution. The ART 9 Class-D two-channel amplifier is 50% more powerful than previous models, handling extremely high sound pressures with ultra-fast response, realistic dynamics, and minimal thermal loss.

It is extremely energy efficient, so it does not require a cooling fan. It is attached to a massive aluminum heat sink at the back, with no moving parts. Because it is directly connected to the internal frame, it remains stable and sturdy inside the speaker cabinet.

The advanced design of the ART 9 is inside the speaker. The True Resistive Waveguide is the result of extensive improvements to both the transducers and the vent ports, using Finite Element Analysis and continuous measurements in RCF anechoic chambers.

Thanks to FiRPHASE technology, the new geometry, and the placement of the ports, the speaker now operates as a single sound source, offering a perfect sound image. Acoustically, the wave created by the TRW mimics a clean, resonance-free resistance, reducing distortion at high frequencies typically caused by classic horns.