Devialet Expert 250 Pro Streaming Integrated Amp Demo device

When Devialet entered the hi-fi world stage over 10 years ago with the D-Premiere, the innovative technology and fascinating design of the French amplifier represented a real revolution. And this still applies today to the successor models in the Devialet EXPERT series PRO - thanks to constant development, Devialet has managed to always be (at least) one step ahead of the competition.

The Devialet EXPERT 250 PRO is the largest of the three stereo amplifiers in the Devialet EXPERT series. Of course, the Devialet EXPERT 250 PRO also uses the hybrid amplifier technology ADH® in the latest version V2. ADHV2® and thus ingeniously combines the sonic advantages of analogue amplification with the precision and performance of modern Class D amplifiers.

With the active speaker management SAM®, the Devialet EXPERT 250 PRO is perfectly adapted to every speaker. To do this, Devialet EXPERTS regularly examine and measure loudspeakers from different manufacturers and thus create a constantly growing database of loudspeaker properties. The SAM® profiles and all other settings can be easily set up in an online configurator and are transferred to the device on an SD card.

With the Devialet EXPERT 250 PRO, Devialet also uses its own converter technology called DAC Magic Wire®. This is integrated into the device's infrastructure in such a way that the distance between the D/A converter and the speaker connections is only a record-breaking 5 cm. This means that harmful influences on the sensitive analog signal have no chance.

The Devialet EXPERT 250 PRO also leaves nothing to be desired when it comes to connectivity; it has connections for numerous digital and analogue sources and has an integrated phono stage for connecting a turntable. This allows precise tuning to the pickup used and has excellent A/D conversion. The Devialet EXPERT 250 PRO receives music data via LAN cable or wirelessly via WLAN, and Devialet's own app is available to control streaming. Operation in everyday life is carried out via what is currently perhaps the most beautiful remote control in the industry. In addition, the Devialet EXPERT 250 PRO can be connected to up to 8 other Devialet devices via the network.

Like all devices in the Devialet EXPERT series, the Devialet EXPERT 250 PRO is based on Devialet's Evo® platform and can therefore be adapted to future technical developments, new standards or formats via software updates.

Technical data

RANGE

Stereo

EXCLUSIVE TECHNOLOGIES

ADHV2®, SAM®, AIR®, EVO®, DAC Magic Wire®, RAM®, Core Infinity

STREAMING SERVICES

UPnP
Airplay®
Spotify Connect

CHAINING

Up to 8 devices

PHONO STAGE

Advanced (MM/MC)

PRE-AMP OUTPUT

Yes (Mono/Stereo)

HOUSING

Hand polished and made from a single block of aluminum

Pure copper base plate for optimal heat dissipation

SIDE FINISHING

Dark chrome plated

DIMENSIONS

Length: 400 mm ö width: 400 mm ö height 40 mm

WEIGHT

9.7kg

PERFOMANCE

2x250 watts RMS under 6O

DISTORTION AT FULL POWER

0.0005% THD+N

DISTORTION AT 10W

0.00025% THD+N

S/N RATIO

130dB

OUTPUT IMPEDANCE

0.001O

DAMPING FACTOR

8000

BANDWIDTH

DC-30kHz (-0.1dB) DC-95kHz (-3dB)

PHASE SHIFT

0.4° at 20kHz

1.8° at 40kHz

THERMAL DISTORTION

Below the measurement limit

COMPUTING POWER

1x QUAD CORE 1 GHz CPU

2x SHARC 400MHz DSP

1x 16 MHz RISC processor

4x 40 MHz RISC processor

1x 64 MHz RISC processor

WIRELESS INTERNET ACCESS

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

ETHERNET

RJ45 100/1000Mbps

USB

Asynchronous input/output for USB Audio 2.0

Extremely low latency

Bidirectionality (for digitizing analog sources)

DIGITAL COAXIAL INPUTS

Up to 4x RCA 75O

DIGITAL OPTICAL INPUTS

1x TOSLINK

Up to 1x miniTOSLINK 3.5 mm

SUPPORTED FORMATS

Up to 32 bits / 192 kHz PCM (USB)

Up to 24 bits / 192 kHz PCM (AIR®, UPnP, AES/EBU, coaxial)

Up to 24 bits / 96 kHz PCM (Optical)

Up to 1 bit / 3.072000 MHz DSD64 (USB, coaxial)

ANALOGUE INPUTS

Up to 2x RCA stereo

Sensitivity adjustable via the configurator

Extended phono stage (MM / MC)

SPEAKER OUTPUT

4 mm banana plugs, fork plugs or stripped cables

Compatible with all speakers, from 8O to 2O

Short circuit protection

Active filtering possible

HOME AUTOMATION

Up to 1x RS232 3.5 mm 115200 baud (documentation available via the configurator)

TRIGGER

3.5mm trigger connector

Trigger input and output