Atoll Evolution Integrated Amplifier - Made in France
Overview
The concept of the IN400 Evolution rests on our aesthetic and technical approach dedicated to optimal musicality. In mechanical terms, chassis is made from 2 mm steel and the front of 10 mm aluminum. Lateral curved heatsinks are manufactured in massive aluminum blocks by a completely unique process. The original design of the cabinet has been studied to best absorb mechanical vibrations and ensure perfect heat dissipation.
Electronic scheme is the result of long hours of updates that helped to optimize its operations and to refine the choice of components. Electric stages are rigorously double mono with a specific attenuator by channel and two ground star differentiated. Each component has been selected by listening and comparison test. The original scheme is optimized to refine the polarization bias currents and feedback.
The ultimate goal is to provide maximum power with as much energy in all registers. It then gets a listen binding wide stereo image and fluidity, natural and harmonic wealth.
Features
- Front pannel in 10 mm brushed, micro-blasted and anodised aluminium,
- high-precision engraving.
- Mass-machined aluminium heatsink and buttons.
- 2 mm steel chassis.
- Two toroidal transformers: 1050 VA (audio) + 1,6 VA (control logic).
- High quality shielded MKP link capacitors.
- Integral double mono structure:
- – Separate windings for each channel.
- – One 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, low feedback.
- Power stages with MOS-FET transistors (8 per channel) rigorously matched.
- Precise adjustment of the balance, possibility to memorise it.
- Possibility of choosing the standby mode: Low consumption or preheating.
- Configurable buttons backlighting.
- High contrast OLED display: ON or OFF mode (after 5 seconds of inaction).
- ATOLL global remote control delivered as standard.
Connectivity
- 2 XLR inputs.
- 5 Line inputs: AUX or PHONO (option) CD, TUNER, DVD, TAPE.
- 1 BYPASS input.
- 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/384 kHz) & DSD (up to 256).
- 1 Bluetooth input.
Specifications
- 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 consumption):< 0,5 W
- Dimensions:440×370×130 mm
- Weight:19.5 Kg
Documentation
