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) are rigorously matched.
Precise adjustment of the balance and the possibility of memorising 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 Evolution can receive the following optional boards:
– DAC boards: DA100 and DA200.
– PHONO boards: P50 and P100 (can be combined with DAC boards).
Technical data
Power: 2×160 Wrms / 8Ω – 2×300 Wrms / 4Ω

















