Atoll IN100 Signature integrated amplifier

2 x 100w

Audiophile components

Made in France

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1 249,00 €

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The IN100 Signature integrated amplifier replaced the manufacturer’s bestseller model, the Atoll IN100 SE. Of course, this model is still designed and made in France. It offers a real power of 2 x 100w at 8 ohms and delivers 140w at 4 ohms.


The Atoll IN100 Signature consists of a metal chassis of 1.5 mm with a new brushed-aluminium front panel available in black or natural. The top of the device is perforated for high heat dissipation.

The front panel takes up the design of the IN300 integrated amp.

In its centre, there is a volume potentiometer (with the remote control option). To the right of it, there are 2 buttons to select the desired input. To the left, 7 led indicate the selected input.


The Atoll IN100 Signature has 5 analogue inputs, 1 by-pass input, 1 double preamp output and 1 Tape in/out.

A 6.35mm Jack headphone output is also available on the front panel.

The 5 analogue inputs are the following: auxiliary input, CD input, Tuner input, DVD and Tape input.

The by-pass input can connect a preamplifier. By choosing this input, the integrated amplifier becomes a power amplifier.

The double preamplifier output allows the IN100 Signature amplifier to be connected to one or two power amplifiers in order to become a preamplifier.

You can also connect a preamplifier output to a subwoofer.


The Atoll IN100 Signature integrated amplifier receives several improvements in terms of components.

It is equipped with an electronic protection system. If the maximum power allowed is exceeded, the standby indicator flashes red for a some seconds and then the amplifier automatically reduces the volume.

The printed circuit is gold/nickel double face.

The two toroidal transformers develop together 680 VA (340 VA x 2)! They are associated with more than 32 000 uF of capacity!

The amplification is based on fully symmetrical stages with discrete components and the connecting capacitors are MKT technology. The source selection is made via relay.

The internal structure has been revised compared to the previous model, in order to have better performance and musicality.


The IN100 Signature integrated amplifier can be controlled from the front panel. It is also equipped with an infrared captor so it can be controlled via remote control (optional).

The major new features are the options available at the input level:

- Instead of the auxiliary input, it can receive an Atoll P50 phono card (for MM cartridges) or an Atoll P100 phono card (for MM or MC cartridges). Equipped like that, you can listen to your favorite vinyl records.

- If you want to listen to your music from a computer (Mac or PC) or a tablet or other device, you need the Atoll Signature digital card, which is the one that comes standard with the IN300! It offers 2 coaxial inputs in 24 bits/192kHz and 2 optical inputs, also in 24 bits/192kHz, as well as an asynchronous USB-B input in PCM from 16 bits to 32bits up to 384kHz and DSD64 and DSD128. There is also a Bluetooth receiver in direct digital connection to the AKM AK4490 audio converter.

- It is also possible to add the Atoll SPDIF digital card. This one is simpler, without USB and Bluetooth, only 2 SPDIF and 2 optical inputs.


The IN100 Signature represents the mid-range of the French manufacturer Atoll. But it is the perfect example of the French brand’s know-how.

The Atoll IN100 Signature has impressive sense of detail and precision. It delivers a fast and alive sound with remarkable uniformity and power. We are closed to the quality of its big brother, the Atoll IN200 Signature.

All instruments are reproduced with high fidelity and a lot of fineness.

Its power supply is oversized and gives it a lot of ease, even with speakers that are a quite difficult to drive. This integrated amp does not cheat, that music is both natural and very realistic.

Associated to an excellent source and an excellent pair of Hi-Fi speakers, it will be the core of a superb High Fidelity system!

The Atoll IN100 Signature integrated amplifier is a real music evolution regarding to the old model, and offers important possibilities with the digital card among others. A

reference product!


Power at 8 ohms: 2 x 100 W

Power at 4 ohms: 2 x 140 W

Transient power: 2 x 180 W

Bandwidth: 5-100 000 Hz

Signal-to-noise ratio: 100 dB

Sensitivity: 100 mV

Distortion rate: <0.05 %

Input impedance: 220 Kohms

Line inputs: 5

Tape input: 1

Bypass: 1

Headphone output: 1 x 6.35 mm Jack

Preamp outputs: 2

Capacitive total: 33 000 µF

Toroidal transformer: 680 VA

Option: SE remote control

Option: P50 or P100 phono card

Option: S/PDIF card

Option: NUM card

Finish: black or silver aluminium

Weight: 11 kg

Dimensions: 440 x 280 x 90 mm

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Atoll IN100 Signature integrated amplifier

Atoll IN100 Signature integrated amplifier

2 x 100w

Audiophile components

Made in France

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