The Amphion Amp400.12 is a 12‑channel power amplifier designed specifically for immersive audio and modern multichannel monitoring environments. Built on an advanced Class‑D platform with a proprietary buffer stage, it delivers fast, controlled and low‑distortion power, making it a perfect partner for Amphion and other passive studio monitors in Dolby Atmos, surround or complex multi‑speaker setups.
 
With twelve discrete, identical channels available, the Amp400.12 can power a full 7.1.4 Dolby Atmos system from a single chassis, while still leaving an additional channel for future flexibility. Alternatively, it can drive up to six pairs of passive monitors in multi‑room, cue or A/B/C/D configurations. Each channel delivers 410 W into 4 ohms or 205 W into 8 ohms (20 Hz–20 kHz, 1% THD+N), providing ample headroom and rock‑solid driver control even in demanding control rooms.
 
The Amp400.12 provides cohesion across all its discrete channels, ensuring consistent power, performance and tonality throughout the system, which is crucial when placing objects precisely on the 3D grid in immersive mixes. Balanced Neutrik XLR inputs and Neutrik Speakon outputs on every channel make wiring secure and straightforward in complex installations. Housed in a 3U, 19" rack‑mountable aluminium chassis and featuring universal auto‑switching mains (100–240 V, 50–60 Hz), it integrates cleanly into professional studio racks worldwide.
 
In real‑world use, the Amp400.12 is ideal for powering complete Amphion immersive rigs combining Two18, One18, One15 and Base systems in 7.1.4 or larger configurations. Its combination of phase‑coherent, low‑distortion power and precise imaging support lets engineers focus on musical decisions while maintaining accurate localisation, depth and translation across any playback system.