The Atoll IN400 EVO is an integrated amp-preamp with high musical capacity. The concept is based on technical and aesthetic choices dedicated to optimal musicality. Mechanically, the chassis is made of 2 mm steel, and the front face is 10 mm aluminium, brushed, micro-blasted, and anodized, with high-precision engraving. The side heatsinks are machined from solid aluminium blocks to absorb mechanical vibrations and ensure perfect heat dissipation. Features Front face in 10 mm brushed, micro-blasted and anodised aluminium, high-precision engraving. Heatsink and buttons in billet aluminium. 2 mm steel frame. Two toroidal transformers: 1050 VA (audio) + 1.6 VA (control logic). Integral double mono structure: – Separate windings for the tracks. – 1 attenuator per channel (with switched resistors). Bipolar transistor input stages. Current sources with bipolar transistors and LEDs to ensure perfect voltage stability. Darlington transistor driver stages. Audio stages with perfectly symmetrical structure and very low counter-reaction. Power stages with MOS FET transistors (8 per channel) rigorously matched. Precise adjustment of the balance, the possibility of memorizing it. Possibility of choosing the standby mode: Low consumption or preheating. Configurable button backlighting. High contrast OLED display: ON or OFF mode (after 5 seconds of inaction). ATOLL global remote control delivered as standard. The IN400 EVO can receive the following optional cards: – DA100 and DA200. – P50 and P100. Specifications Inputs: - 2 XLR inputs. - 5 Line inputs: AUX or PHONO (option), CD, TUNER, DVD, TAPE. - 1 BYPASS input. Outputs: - 1 12V Trigger output. - Possibility of adding the DA200 digital board (optional): - 2 Optical inputs (24 bits/192 kHz). - 2 Coaxial inputs (24 bits/192 kHz). - 1 Asynchronous USB input (24 bits/192 kHz). - 1 Bluetooth input. Various: - 1 Ø 6.35 mm headphone jack. Power: 2×160 Wrms / 8Ω – 2×300 Wrms / 4Ω Total Of Capacitors: 96,680 µF Bandwidth (-3 dB): 5 Hz – 100 kHz Rise Time: 2 µs Input Impedance: 357 kΩ Sensitivity: 450 mV Signal-To-Noise Ratio: 100 dB Distortion Rate At 1 kHz: 0.05% Standby Consumption (Low): < 0.5 W Dimensions: 440×370×130 mm Weight: 19.5 Kg Optional Boards Available: Phono Board on the AUX Input: - P100 (configurable MM or MC). - P50 (MM). Digital Board (Choice of): - DA200: - 2 Coaxial inputs (24 bits/192 kHz). - 2 Optical inputs (24 bits/192 kHz). - 1 Bluetooth receiver. - 1 USB-B input: PCM & DSD. XMOS Specific Driver: XMOS-Stereo-USB-Audio-Class2-Driver-30BB_v4.13.0.exe Note: Using the USB input of the optional DAC board requires downloading a specific driver for Windows computers. - Driver: XMOS-Stereo-USB-Audio-Class2-Driver-30BB_v4.13.0.exe. - Not required for MAC and Linux.
