Devialet Expert 140 PRO Integrated Amplifier

Devialet Expert 140 PRO Integrated Amplifier

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Key info

All the promises of an Expert Pro system. ADH, SAM, RAM, EVO… The Expert 140 Pro features all of Devialet’s exclusive technologies.

Inventors of the world’s best amplification technology – ADH – we are constantly working towards the ultimate perfection: zero distortion. In this passionate quest, we thoroughly reviewed the electronics of our products to develop the new Expert Pro line.


  • Power : 2x140WRMS 6Ω.
  • Signal-to-Noise ratio : 130dB.
  • THD – 130W/6Ω : 0,0005% / -106dB.
  • THD – 10W/6Ω : 0,00025% / -112dB.
  • Output impedance : 0,001Ω.
  • Damping factor : 8000.
  • Thermal distorsion : Below measurement threshold.
  • Technologies : ADHV2, SAM, AIR, EVO, DAC Magic Wire, RAM.

Phono Stage

  • Type of supported cartridges: MM/MC.
  • MM sensitivity from 1mVRMS to 15mVRMS.
  • MC sensitivity from 100 μVRMS to 5000 μVRMS.
  • 256 combinations for the resistive/capacitive loading of the cartridge.
  • Stereo/mono/left/right mixing.
  • 13 equalisation curves available.
  • Specific menu for dynamic adjustment of all these settings.

Preamplifier & Main DAC

  • Patented Magic Wire Digital / Analogue Converter, D/A T.I. PCM1792.
  • Unique high-precision MasterClock with very low jitter: 2ps RMS.
  • Conversion of all inputs into 24-bit/192 kHz.
  • Built-in DSD / PCM conversion.
  • SAM profile via configurator allowing the precise adaptation of the sound signal to the specifications of your speakers.
  • Available active filtering on all analogue outputs via configurator.
  • Volume control in increments of 0.5 dB.
  • Volume adjustment range: -97.5 dB to 30.0 dB.
  • Bypass/pass-thru mode available input by input.
  • Balance adjustment.
  • Tone control: bass /-18 dB, treble /-18 dB with variable frequency cut-off via configurator.


  • Finish : Chassis carved out of a single aluminium block.
  • Color : Dark chrome finish.
  • Dimensions : Length: 383mm | Width: 383mm | Height: 40mm.
  • Weight : 5.65Kg.
  • Installation : Horizontal or vertical installation with automatic tilt detection

Expert Pro is the ultimate audiophile system, for the most discerning of music lovers.  Well above and beyond an ordinary amplifier, Devialet reinvents and combines for the first time all of the key components of expert playback (preamplifier, amplifier, DAC, streamer, phono stage) in a single and extremely thin slab.

Your Expert Pro is unlike any other: set each of the thousands of possible configurations for a unique musical experience.  Regardless of the source. Regardless of the speakers.  Unmatched performance.  Devialet technologies reinvent each step of the musical signal chain for never before achieved levels of performance.

Pure sound. Explosive dynamics. Absolute silence. Perfect audiophile playback, completely transparent. A rare emotional experience.

The performance delivered by Expert Pro is the best ever measured, at all power levels:

THD noise (harmonic distortion) at full power under 6Ω


THD at 10W/6Ω


Output impedance


Signal-to-noise ratio

133 dB

Devialet Inventions

ADH analogue-digital hybrid amplification, SAM system for real-time adaptation of the signal transmitted to the speakers, free, regular updates using the EVO platform, HD audio stream (wired or wireless) via AIR, DAC Magic Wire, RAM Phono stage… The Expert is Pro system an engineering gem.

All Expert Pro systems incorporate all of Devialet’s audiophile technologies. 107 patents. 58 awards. The most award-winning audio system of all time.

In addition to these technologies exclusive to Devialet, Expert Pro benefits from many major innovations developed for this new line:

  • New ADH Intelligence.
  • New Magic Wire DAC.
  • New Class A Amplifier.
  • New Class D Amplifier.
  • New Power Supply.
  • New Thermal Management.

Your Expert Pro unlike any other

Vinyl turntable, CD player, tuner, computer, smartphone, tablet, NAS, online music services, television : the Expert Pro system elevates all of your music.

The Configurator enables you to adjust with absolute precision each setting of your audiophile installation. From defining active sources to setting the specifications of your phono cell, create a system unlike no other in the world.

A unique listening experience, whatever your preferences may be

Regardless of your source and regardless of your speakers, Expert Pro renders your audiophile setup breathtaking. From the most delicate of turntables to the highest quality file of your digital library, Expert Pro allows you to rediscover all your music.


Speaker Active Matching SAM

For the first time, your speakers operate at peak performance levels while being perfectly protected.

No speaker models are exactly the same. Expert Pro sends a signal that is precisely adapted to their acoustical architecture. Displacement, driver excursion, acceleration, speed… with the SAM technology, the Expert Pro system has perfect knowledge of how your speakers behave.

The sensoriality of audiophile refinement

A technological gem, the fully omnidirectional Devialet remote enables you to control your installation with the tips of your fingers, with no latency.

A joyful experience.

Devialet technologies

Each Expert Pro system incorporates all of the exclusive technologies invented by Devialet.

A revolutionary electronic architecture that radically optimises the entire sound signal path, from its input in the Expert Pro system to its output to your speakers.

The key elements of this unique architecture have been thoroughly reviewed for the new Expert Pro line which introduces many major innovations :

  • New ADH Intelligence.
  • New Class A Amplifier.
  • New Class D Amplifier.
  • New Magic Wire.
  • New Power Supply.
  • New Thermal Management.

These technologies are protected by 107 patents, rewarded by 57 awards and acclaimed by the international audiophile press.

ADH. The best of both worlds

Invented by Devialet, ADH Intelligence is the first hybrid amplification technology that combines the refinement of analog amplification (Class A) with the power and compactness of digital amplification (Class D).

Both types of amplification operate in parallel, for radically increased performance.

With Expert Pro, Devialet introduced a new version of the ADH Intelligence, pushing once again the extreme performance of this unique technology.

SAM. The best of your speakers

For the first time, the SAM technology (Speaker Active Matching) enables the precise adaptation of the sound signal to the specifications of your speaker model. This is made possible by the powerful DSP at the heart of each Expert Pro system.

These built-in systems protect your speakers and ensure top performance.

DAC Magic Wire. The world’s shortest signal path

The invention of Magic Wire technology enables Devialet to ensure the world’s shortest path between the DAC and speaker connections: 5 cm.

To achieve this technological feat, Devialet refined the best digital-to-analog converter to achieve the world’s best performance in noise and distortion levels

Switch-mode power supply

All the power of current, with complete transparency

Supported by a revolutionary switching mode power supply, the Expert Pro system goes from absolute silence to explosive dynamics in the blink of an eye.

AIR. High definition streaming

Invented for high definition music, AIR enables you to enjoy all your streaming audio content without compromise (up to 24 bits / 192 kHz), via Ethernet or Wi-Fi, regardless of the format, multimedia player or streaming service that you use.

AIR (Asynchronous Intelligent Route) is the world’s most advanced audio streaming technology.

RAM. The world’s most advanced phono stage

Thanks to the exclusive RAM (Record Active Matching) technology, your phono stage is entirely and dynamically configurable. It precisely adapts itself to the characteristics of your turntable and your vinyl records. Serving the musical heritage.

EVO. The permanent upgrade

Expert Pro systems are designed to perpetually remain state-of-the-art.

The EVO platform, the electronic architecture of Expert Pro systems, is fully driven by upgradeable software. As such, your Expert Pro undergoes constant improvement via free, regular updates, for ever improved features and performance.

Devialet Remote. The weight of audiophile refinement

Carved out of a single aluminium block, the Expert Pro Remote enables you to drive your system with unparalleled finesse.

Responsive and precise, the Expert Pro Remote offers the best audiophile experience.

Using zero latency radio transmission technology, the Expert Pro Remote is fully omnidirectional.

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