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Expert 440 Pro Dual

2x440 Watts Under 6Ω
Devialet media

Mono or Dual: Select your setup

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A comprehensive connectivity and a perfect control of your speakers.

The Expert 440 Pro combines two Expert 220 Pro units and offers up to 16 physical inputs and 440W of power per channel, for a Dual-Mono set-up without any compromise.
26

UPnP

Devialet medias

Roon Ready

29

AirPlay

28

Spotify Connect

Specifications

Range

Dual-mono

Exclusive technologies

ADHV2®, SAM®, EVO®, DAC Magic Wire®, RAM®

streaming services

Roon Ready | UPnP | Airplay® | Spotify Connect

Daisy chaining

Up to 8 units

Phono stage

Advanced (MM / MC)

Pre-amplified output

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

Finishes

Dark chrome | Casing carved out from a single aluminium block

Side plating

No

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

Dimensions & Weights

Dimension

Length: 400mm | Width: 400mm | Height: 40mm

Weight

Master : 5.9Kg ; Companion : 5.4Kg

Connectivity

Wi-Fi

2.4GHz 802.11 b/g/n Wi-Fi
Supported formats: 16-bit/44.1 kHz PCM to 24-bit/192 kHz PCM

Ethernet

RJ45 100/1000 Mbps

USB

USB Audio 2.0 asynchronous input/output
Supported formats:
16-bit/44.1 kHz PCM to 32-bit/192 kHz PCM
DSD64 1bit/2.822400MHz and 1bit/3.072000MH
Special characteristics:
Very low latency

Digital coaxial inputs

Supported formats:
16-bit/44.1 kHz PCM to 24-bit/192 kHz PCM
DSD64 1bit/2.822400MHz and 1bit/3.072000MHz

Digital optical inputs

Supported formats:
16-bit/44.1 kHz PCM to 24-bit/192 kHz PCM

Analog inputs

Up to 4x RCA stereo
Sensitivity adjustable via the Configurator
Advanced phono stage (MM / MC)

Speaker output

4mm banana plugs, stripped cables or fork connectors
Adjustable from 30 WRMS to 440 WRMS via the configurator
Compatible with all speakers, from 1Ω to 16Ω
Short-circuit protection
Active filtering available

Home automation

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

Trigger

3.5mm mini-jack trigger connector

Performances

power

2x440 Watts RMS under 6Ω

Distortion at full power

0.00025% THD+N

Distortion at full power

0,0001% (10W / 6Ω)

Distortion at 10w

0.0001% THD+N

Distortion at 10V

0.00025% THD+N

Signal-to-noise ratio

133dB

Output impedance

0.001Ω

Damping factor

8000

Bandwidth

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

Phase rotation

0.2° at 20kHz
0.9° at 40kHz

Thermal distorsion

Below measurement threshold

Inputs

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)

What's in the box

  • 2 Devialet Expert 220 Pro
    2 Expert Remote
    1 Digital coaxial link cable for audio
    1 Analog 3.5mm link cable for commands
    2 User Manuals
    2 Warranty booklets (2 years)
    2 SD cards
    2 Power cables
    2 Pairs of gloves
    2 Microfibre cloths

FAQ

What's the warranty on Expert Pro?

Expert Pro systems come with a 2-year warranty. Effective from date of purchase.

Why is the output power in dual-mono mode not always twice the output power of the stereo mode?

The ideal situation is to have no limitation in terms of thermal dissipation and current availability. This is the case with the 250 Pro where the output power in dual-mono is then 4 times higher than the output power in stereo (the output power P goes from 250W to 1000W as the output voltage U is multiplied by 2 in dual-mono and P=U2/R). With the 220 Pro, the casing is limiting the thermal dissipation in dual-mono mode and therefore the output power is only multiplied by 2. With the 140 Pro, the class D board is limiting the current availability and therefore the output power is only multiplied by 1.5.
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