Atoll IN400 EVO Silver

The IN400 EVO is an integrated amp-preamp with high musical capacity. The concept is based on technical and aesthetic choices dedicated to optimal musicality. Mechanically, the chassis is made of 2 mm steel, and the front face is 10 mm aluminium, brushed, micro-blasted, and anodized, with high-precision engraving. The side heatsinks are machined from solid aluminium blocks to absorb mechanical vibrations and ensure perfect heat dissipation.

• Front face in 10 mm brushed, micro-blasted and anodised aluminium, with high-precision engraving.
• Heatsink and buttons in billet aluminium.
• 2 mm steel frame.
• One toroïdal transformer: 1050 VA for audio section
• One transformer: 1.6 VA for 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).

Inputs
2 XLR inputs.
5 Line inputs: AUX or PHONO (optional), CD, TUNER, DVD, TAPE.
1 BY-PASS input.

Outputs
1 Ø 6.35 mm headphone jack output.
1 12V Trigger output.

Various
Possibility of adding DA100 or DA200 digital boards (optional).

Owner’s manual

Device Scheme Installation

Press reviews

1 Digital board (of your choice):

• 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).

———————————

1 Phono board on the AUX input (optional):

• • P100 (configurable MM or MC).
  • P50 (MM).

Important: Using the USB input of the optional DAC board requires downloading a specific driver for Windows computers. This can be downloaded below. This driver is not necessary under MAC and Linux.

Download it here:

XMOS-Stereo-USB-Audio-Class2-Driver-30BB_v4.13.0.exe

• Front panel buttons:
  – Power ON/OFF.
  – Source selection.
  – Volume control.
  – Balance control.
  – Button backlighting.
  – Display control.
  – Low-power mode selection.
  
  
• Low-power OLED display.
  
  
• Standard remote control allows control of all products:
  Integrated, Preamps, CD players, Tuners, and DACs.

“It’s a machine capable of driving a very wide variety of loudspeakers with a fluid and engaging musicality, which will keep us on our toes for hours. Furthermore, we are in the presence of an amp manufactured to perfection with an attention to detail that is not always found at this level in this price range. Of course, it’s a sum and not an insignificant one, but despite everything, we can declare without blushing that the quality-price ratio is excellent. A notion that is no longer discussed at this price point. If an exception were needed, here it is.”

Laurent Thorin
Vumètre no. 56.

The IN400 EVO will be available in a black or natural aluminium version.