Devialet Expert 250 Pro streaming amplifier

When Devialet entered the HiFi world with the D premiere over 10 years ago, the innovative technology and the fascinating design of the French amplifier represented a real revolution. And this still applies to the successor models of the Devialet EXPERT series PRO - thanks to constant further development, Devialet has always been (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 relies on the hybrid amplifier technology ADH® in the latest version V2. ADHV2® and thus ingeniously combines the sound advantages of analog amplification with the precision and performance of modern Class D amplifiers.

With active speaker management SAM®, the Devialet EXPERT 250 PRO is perfectly adapted to every speaker. For this purpose, Devialet EXPERTS from Devialet 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 configured in an online configurator and transferred to the device on an SD card.

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

The Devialet EXPERT 250 PRO also leaves nothing to be desired in terms of connectivity, it has connections for numerous digital and analog sources and has an integrated phono preamplifier for connecting a turntable. This allows an exact adjustment to the used pickup and has an excellent A / D conversion. The Devialet EXPERT 250 PRO receives music data via LAN cable or wirelessly via WLAN, and a dedicated app from Devialet is available to control the streaming. Operation in everyday life takes place via what is perhaps the most beautiful remote control in the industry. the Devialet EXPERT 250 PRO can also 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 the Evo® platform from Devialet and can thus be adapted to future technical developments, new standards or formats by means of a software update.

Technical specifications

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

Phonostage

Extended (MM / MC)

Preamplifier Output

Yes (mono / stereo)

Casing

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

Power

2x250 watt RMS under 6O

Distortion with full Performance

0.0005% THD + N

Distortion at 10W

0.00025% THD + N

NOISE LEVEL

130dB

Output Impedance

0.001O

Damping Factor

8000

Bandwith

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

Phase Shift

0.4 ° at 20kHz

1.8 ° at 40kHz

THERMAL DISTORTION

Below the measurement limit

Computing Performance

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

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

Ethernet

RJ45 100/1000 Mbps

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)

Analog Inputs

Up to 2x RCA stereo

Sensitivity adjustable via the configurator

Extended phono level (MM / MC)

Speaker Output

4 mm banana plug, fork plug or stripped cable

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

3.5 mm trigger connector

Trigger input and output