Description Atoll Electronique IN400 Evolution Integrated Amplifier The Atoll Electronique IN400 Evolution Integrated Amplifier is a flagship French-built integrated amplifier that combines a true dual-mono Class AB design with robust power (2×160 W into 8 Ω / 2×300 W into 4 Ω) and a high-current power supply to effortlessly drive a wide range of loudspeakers with clarity, authority, and dynamic finesse. Crafted with premium discrete components, balanced XLR and RCA inputs, and modular upgrade options (such as optional DAC or phono boards), it delivers refined musicality and versatile connectivity in a beautifully engineered chassis dedicated to high-fidelity performance. View Owners Manual >> View Atoll Electronique Products >> Review “This is a machine capable of powering a very wide variety of loudspeakers with a fluid and engaging musicality that will keep us captivated for hours. Moreover, we have here an amplifier crafted to perfection with an attention to detail not always found at this level in this price range. Of course, it’s a significant investment, but despite that, we can confidently declare that the value for money is excellent. A concept rarely discussed at this price point. If an exception were needed, this is it.” Laurent Thorin / Vumeter no. 56. Features 10 mm aluminum front panel, brushed, micro-bead blasted and anodized, with high-precision engraving. Heat sink and buttons made from solid machined aluminum. 2mm thick steel chassis. A toroidal transformer: 1050 VA for the audio section. A transformer: 1.6 VA for the control logic. Integral double mono structure: Separate windings for the tracks. 1 attenuator per track (with switched resistors). Bipolar transistor input stages. Bipolar transistor and LED current sources to ensure perfect voltage stability. Darlington transistor driver stages. Audio stages with a perfectly symmetrical structure, with very low negative feedback. Rigorously matched MOSFET transistor power stages (8 per channel). Precise balance adjustment, possibility to memorize it. Option to choose standby mode: low power consumption or preheating. Customizable button backlighting. High contrast OLED display: on or off mode (after 5 seconds of inactivity). ATOLL global remote control supplied as standard. The IN400 Evolution can receive the following optional cards: DAC cards: DA100 and DA200. PHONO cards: P50 and P100 (can be combined with DAC cards). CONNECTIVITY Inputs: 2 XLR inputs. 5 Line inputs: AUX or PHONO (optional), CD, TUNER, DVD, TAPE. 1 BY-PASS input. Outputs: 1 x 12V trigger output. 1 x 6.35mm headphone jack output. Miscellaneous: Possibility of adding DA100 or DA200 digital cards (optional). Specifications Power: 2×160 Wrms / 8Ω 2×300 Wrms / 4Ω Total capacitance: 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 at 1 kHz: 0.05% Standby power consumption (low power): < 0.5 W Dimensions: 440×370×130 mm Weight: 19.5 kg OPTIONAL CARDS AVAILABLE DA200 2 Coaxial Inputs (24 bits/192 kHz). 2 Optical Inputs (24 bits/192 kHz). 1 Bluetooth Receiver. 1 USB-B Input: PCM & DSD. DA100 2 Coaxial Inputs (24 bits/192 kHz). 2 Optical Inputs (24 bits/192 kHz). P100(configurable MM or MC). P50(MM).
