

Atoll IN400 EVOLUTION INTEGRATED AMPLIFIER
ATOLL IN400 EVO: £5500
P100 (MM & MC): £150
P50 (MM): £100
DA200 DAC BOARD: £350
The Atoll IN400 EVO is the pinnacle of integrated amplifiers, combining unparalleled musicality with technical and aesthetic refinement. Its robust construction and innovative design deliver a dynamic and immersive listening experience perfectly suited for discerning audiophiles.
Key Features:
Exceptional Power Output:
Dual toroidal transformers – 1050 VA for audio and 1.6 VA for control logic – deliver high current capacity and dynamic performance.Precision Engineering:
Integral double-mono structure with separate windings and one attenuator per channel for precise channel separation.
Bipolar transistor input stages and Darlington transistor driver stages for enhanced voltage stability.
Power stages featuring 8 rigorously matched MOS-FET transistors per channel with symmetrical structure and minimal counter-reaction.
Refined Construction:
Front panel crafted from 10 mm brushed, micro-blasted, and anodised aluminium with high-precision engraving.
Side heatsinks machined from solid aluminium blocks to dissipate heat and absorb mechanical vibrations.
Robust 2 mm steel chassis for excellent rigidity and durability.
Enhanced Functionality:
Adjustable balance with memory function for personalisation.
Configurable standby modes: Low consumption or preheating.
High-contrast OLED display with auto-dimming after 5 seconds of inactivity.
Configurable button backlighting for added convenience.
Additional Highlights:
Bipolar transistor current sources with LEDs for voltage stability.
Supplied with the ATOLL global remote control for seamless operation.
Compatible with optional DA100/DA200 DAC boards and P50/P100 phono boards.
The IN400 EVO exemplifies Atoll’s dedication to musicality and precision. From its meticulously designed circuitry to its elegantly crafted aluminium chassis, every detail has been engineered to deliver extraordinary performance.
CONNECTIVITY
Inputs
2 XLR inputs.
5 Line inputs: AUX or PHONO (option) CD, TNUER, 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.
Divers
1 Ø 6.35 mm headphone jack.
Useful Documentation - IN400 EVO
To utilise the USB input of the optional DAC board, you need to install a specific driver for Windows computers; this driver is not required for MAC and Linux systems. You can download it below:
ATOLL IN400 EVOLUTION AMPLIFIER REVIEW
A British Audiophile takes a look into the new Atoll IN400 Evolution amplifier; click on the window to watch.
IN400 EVO SPECIFICATIONS
Output power Wrms/8Ω:
2×160 W
Output power Wrms/4Ω:
2×300 W
Power supply:
1050 VA (audio) + 1.6 VA (control logic).
Total of capacitors:
96 680 µF
Power consumption in standby (low consumption):
<0.5 W
Input impedance:
357 kΩ
Sensitivity:
450 mV
Signal/noise ratio:
100 dB
Distortion at 1 kHz:
0.05%
Rise time:
2.0 µs
Dimensions:
440×370×130 mm
WEIGHT:
19 Kg
FINISHES:
Anodised Black, Natural Aluminium
warranty:
2 Years