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Devialet Expert 250 Pro

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Devialet Expert 250 Pro
Devialet Expert 250 Pro
Devialet Expert 250 Pro
Devialet Expert 250 Pro
Devialet Expert 250 Pro
Devialet Expert 250 Pro
Devialet Expert 250 Pro
Devialet Expert 250 Pro

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Devialet Expert 250 Pro

Designed to replace traditional Hi-Fi systems, Expert Pro delivers all the core elements of playback – preamp, amp, DAC, streamer, phono stage – in a single and ultra-compact unit.

If you have questions or would like to place an order, please contact our Devialet experts.

(CA) 714-630-4100 - (TX) 817-320-3145
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A one-time price of $19,000.00 will be added to your order.
Manufacturer: DEVIALET
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Devialet Expert 250 Pro

All the Promises of an Expert Pro System



Incomparable Performances

Expert Pro is the world’s most advanced audiophile system, meant for music lovers in search of a refined and emotional listening experience. Designed to replace traditional Hi-Fi systems, Expert Pro delivers all the core elements of playback – preamp, amp, DAC, streamer, phono stage – in a single and ultra-compact unit. The Expert 250 Pro pushes the limits of power amplification thanks to an exclusive hand-polished casing, equipped with a 100% pure copper bottom plate.


Entirely Configurable.

By rethinking sound reproduction at every turn, Devialet engineers have been able to achieve the best performance ever measured, at all power levels. Entirely configurable and upgradable, Expert Pro reveals your music’s full potential, whatever the source or speakers. Utter connectivity for the most demanding audiophiles. The Expert 250 Pro embeds the full set of Devialet technologies, as well as an ultra-configurable phono stage, designed for vinyl enthusiasts. The Configuator is Devialet's online user setup tool, allowing for phono stage loading in the phono preamp, crossover filters for specific speakers, and other vital audio settings. 3 different user settings can be saved to the included SD card that uploads the settings into the Expert Pro Amplifier.  


A Score of Leading-edge Technologies.

ADH® hybrid amplification delivering the musicality of analog and the power of digital, SAM® real-time speaker active matching, on-the-fly phono stage configuration with RAM®, Magic Wire® DAC to eliminate thermal distortion, free and regular upgrades through the EVO® platform…Exclusively developed by Devialet engineers, these technologies radically enhance every aspect of Expert Pro’s architecture. And with Core Infinity, Expert Pro’s new intelligent core, streaming your music without compromising sound quality is both simple and accessible.

From a mathematical model of your speakers, SAM® Speaker Active Matching enables your Expert Pro to adapt accurately the signal transmitted to them. For the first time, it is then possible to obtain a perfect time alignment between the recorded signal and the sound pressure generated by the speaker drivers to achieve the emotional power of music; just as the artist intended.

SAM® is an electro-acoustic revolution. For the first time ever, Devialet SAM technology guarantees a seamless match between your amplifier and connected speakers. Almost all multi-way loudspeakers generate delay caused by the bass diaphragm reacting slower to the audio signal than the tweeter does. Mechanical and technical measures help to minimize delay that would otherwise disrupt the evenness and spatial quality of sound. Preliminary laboratory work carried out via SAM® Lab enables us to identify sixty or more different parameters per speaker model.

SAM® analyzes transducer characteristics using laser technology. These include displacement, deformation, maximum displacement, speed and acceleration. By measuring passive filters, we can determine resonance (event bass-reflex and passive radiators) while factoring in the overall impact of casing and damping. Once this data is compiled, SAM® is able to produce a full physical behavioral model. The collected data also allows us to calculate the transducer SOA (Safe Operating Area). By doing so, SAM® offers permanent protection from overload, letting users reach higher volumes than ever before.

Similar to transfer function, this physical model is inverted in real time using digital signal processing technology before digital-analog conversion occurs. The result: acoustic pressure in the air perfectly matches the signal registered by microphones during the recording process.


The World's Most Advanced Phono Stage

The most advanced phono stage ever created. With next-generation RAM® technology, your Expert Pro phono stage becomes instantly and endlessly configurable, working in real time to custom fit the exact characteristics of your turntable or vinyl records. "Expert Pro phono staging serves the musical heritage, letting you experience music just as it was recorded, today or way back when." Experience high-precision tailoring, serving the musical heritage of your recordings.

With countless settings and full MM/MC, stereo and mono compatibility, Expert Pro phono inputs feature custom input impedance and a range of capacitors.

Expert 220 Pro, 250 Pro, 440 Pro and 1000 Pro models offer over 256 different combinations. To help you reach audio perfection with MM or MC cartridges. These options are available instantly and effortlessly via our online configuration tool.

Adjusting your equalizer curve.

RAM® technology allows you to adjust EQ dynamically and with unrivaled accuracy. The most precise phono stage in the world lets you achieve absolute collusion between Expert Pro and any album from your vinyl library, whatever the provenance or date of the recording. The latest releases. Old favorites. Enjoy all your music, just as it was intended.

Devialet medias

MSRP: $19,000





Exclusive technologies

ADH®, SAM®, RAM®, EVO®, DAC Magic Wire®

streaming services

Roon Ready
Spotify Connect

Daisy chaining

Up to 8 units

Phono stage

Advanced (MM / MC)

Pre-amplified output

Yes (mono / stereo)


Carved out from a single aluminium block

Side plating


Power Supply

Universal 90-240Vac – 50/60Hz
Power cable provided adapted to the country
Patented single stage switching mode topology
High power level: 600W continuous, 4000W peak
High output with power factor correction (PFC)


2.4GHz / 5GHz 802.11ac, compatible with 802.11a/b/g/n


RJ45 100/1000 Mbps


USB Audio 2.0 Asynchronous
Very low latency
Bi-directionality (for digitisation of the analog sources)

Digital coaxial inputs

Up to 4x RCA 75Ω

Digital optical inputs

Up to 1x miniTOSLINK 3.5mm

Supported formats

Up to 32bits / 192kHz PCM (USB)
Up to 24bits / 192kHz PCM (Roon Ready, UPnP, AES/EBU, Coaxial)
Up to 24bits / 96kHz PCM (Optical)
Up to 1bit / 3.072000MHz DSD64 (USB, Coaxial)

Analog inputs

Up to 2x RCA stereo
Sensitivity adjustable via the Configurator
Advanced phono stage (MM / MC)

Speaker output

4mm banana plugs, fork connectors or stripped cables
Compatible with all speakers from 8Ω to 2Ω
Short-circuit protection
Active filtering available

Home automation

Up to 1x RS232 3.5mm 115200 bauds (documentation available via the Configurator)


3.5mm trigger connector Trig In and Trig Out


2x250 Watts RMS under 6Ω

Distortion at full power

0.0005% THD+N

Distortion at full power

0,00025% (10W / 6Ω)

Distortion at 10w

0.00025% THD+N

Distortion at 10V

0,0005% (250W / 6Ω)

Signal-to-noise ratio


Output impedance


Damping factor



DC-30kHz @ -0.1dB
DC-95kHz @ -3dB

Phase rotation

0.4° at 20kHz
1.8° at 40kHz

Thermal distorsion

Below measurement threshold


Width: 400mm - 15-3/4"  | Depth: 400mm - 15-3/4" | Height: 40mm -  1-5/8"


9.7Kg - 21.5 LBS
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