Atoll AM400 Evo Power Amplifier

The AM400 Evolution amplifier uses four pairs of MOSFET transistors per channel. Its discrete electronics have been redesigned to make the device insensitive to capacitive loads. Power is increased to 170 W / 8 Ω, and the signal-to-noise ratio to 105 dB. The high-quality MKP crossover capacitors are shielded, helping to preserve sound fidelity. The motherboard cables to the speaker outputs are pure, oxygen-free, silver-plated copper with Teflon insulation. The low series resistance filter capacitors are custom-made by a world-renowned specialist. 10 mm brushed, micro-blasted, and anodised aluminium front panel with high-precision engraving. 2 mm steel chassis. Machined aluminium heatsinks. 1050 VA toroidal transformer. High-quality, shielded MKP coupling capacitors. Custom-made printed circuit board with nickel/gold finish. Purely balanced XLR signal processing. Bipolar transistor and LED current sources ensure perfect voltage stability. Redesigned audio stages to make the device insensitive to capacitive loads. Improved signal-to-noise ratio. High-quality RCA input/output connectors, screwed to the chassis. Tellurium copper speaker outputs. 12V Trigger input. TECHNICAL DATA Power Wrms/channel/8Ω: 170 W Power Wrms/channel/4Ω: 320 W Power in bridged mono mode/8Ω 600 W Power supply: 1050 VA Total capacitance: 111 300 μF Number of stereo inputs: 1 RCA + 1 XLR Power consumption with switch off: 0 W Power consumption in operation: 14 W – 800 W Input impedance: 220 kΩ Sensitivity: 1,7 V Signal-to-noise ratio: 105 dB Distortion at 1 kHz: 0.005% Bandwidth: 5 Hz – 200 kHz Rise time: 1,5 μs Dimensions: 440 x 370 x 130 mm Weight: 19 kg