4-channel Advanced Class-D amplifier with state-of-the-art amplifier technology and high-quality die-cast aluminum housing with removable cover. The integrated adjustment tool makes it easy to adjust the amplifier, even overhead or in confined spaces. Full performance in the smallest size with asymmetrical power distribution: CH1/2 2 x 45 W at 4 Ω + CH3/4 2 x 80 W at 4 Ω, CH1/2 at 2 Ω not supported + CH3/4 2 x 140 W at 2 Ω, CH1/2 power bridged at 4 Ω not supported + CH3/4 1 x 280 W at 4 Ω bridged. Signal-to-noise ratio 78 dB, damping factor @ 4 Ω >65, ultra low THD+N 0.01% @ 10 W 1 kHz, high-pass active filter CH1/2 & CH3/4: 50 - 5000 Hz, low-pass active filter CH1/2 & CH3/4: 50 - 5000 Hz, auto-sense on function (SIG / DC), switchable audio input signal on CH1-4, gain 0. 45 V - 6 V, adjustable high-level input voltage 1 - 15 V | 15 - 40 V, adjustable high-level input resistance 10| 150 | 600 Ω, 4 x audio input (high- & low-level), variable mounting feet, detachable connection plugs for power and audio signal cables, smart dimensions (LxWxH) 128 x 100 x 45 mm.