Expert 440 Pro Dual

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.

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Specifications

Range

Dual-Mono

Exclusive Technologies

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

Streaming Services

UPnP

Airplay®

Spotify Connect

DAISY CHAINING

Up to 8 units

Phono Stage

Advanced (MM / MC)

Pre-Amplified Output

Yes (mono / stereo)

Casing

Carved out from a single aluminium block

Side plating

Dark chrome finish

Dimension

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

Weight

Master : 5.9Kg ; Companion : 5.4Kg

Power

2x440WRMS 6Ω

Distortion at Full Power

0,00025%

Distortion at 10W

0,0001%

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

Intelligence

3 x SHARC 400 MHz DSP's

1 x 16 MHz RISC processor

4 x 40 MHz RISC processors

1 x 64 MHz RISC processor

Wi-Fi

2.4GHz 802.11 b/g/n Wi-Fi input for the Devialet AIR universal streamer

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

16-bit/44.1 kHz PCM to 32-bit/192 kHz PCM
DSD64 1bit/2.822400MHz and 1bit/3.072000MH

Very low latency
Bi-directionality for digitisation of the active source

Digital Coaxial Inputs

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

SUPPORTED FORMATS

Up to 32bits / 192kHz PCM (USB)

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

Up to 24bits / 96kHz PCM (Optical)

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

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

Output impedance: 0.001Ω

HOME AUTOMATION

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

Trigger

3.5mm mini-jack trigger connector

Download manual

Frequent questions

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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