25.01.2025 06:16
French audio equipment manufacturer Atoll Electronique has updated many of its component lines – among the announcements is the integrated amplifier Atoll Electronique IN400 Evolution. The model offers a power of 2 x 160 W at 8 Ohm load and 2 x 300 W at 4 Ohm and offers a number of very interesting engineering solutions.
Atoll Electronique IN400 Evolution uses a pair of toroidal transformers - 1050 VA for the audio section and 1.6 VA for the control systems. High-quality shielded capacitor section has a capacity of 96,680 µF. The model is built in a dual mono configuration and has separate windings for the channels with one attenuator per channel (with switched resistors).
Atoll Electronique IN400 Evolution is based on bipolar transistor input stages, darlington transistor driver stages, and MOS-FET transistor power stages (8 per channel). The upgrade option includes installation of DA200 digital board module with 2 optical inputs, 2 coaxial inputs, 1 asynchronous USB input, and Bluetooth streaming.
This product is in the Hi-Fi and High End Electronics and Acoustics database
Model name
IN400 Evolution
Type
Integrated amplifier
Analog inputs (balanced)
2
Analog inputs (single-ended)
5
Input sensitivity (mV)
450
Input impedance (balanced) (Ω)
357000
Input impedance (single-ended) (Ω)
357000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
D/A conversion
N/A
Phono MM/MC current-sensing input impedance (Ω)
N/A
Output power (8Ω) (W)
2 x 160
Output power (4Ω) (W)
2 x 300
Gain (dBu)
N/A
Frequency response low +/- 3dB (Hz)
5
Frequency response high +/- 3dB (Hz)
100000
Signal to Noise Ratio (dB)
100
Total Harmonic Distortion + Noise (%)
0,05
Damping factor
N/A
Dimensions (mm)
440×370×130
Weight (kg)
19.5
Official link
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