All the promises of an Expert Pro system.
A piece of craftmanship for extreme performance.
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.
Range
Stereo
Exclusive technologies
ADH®, SAM®, RAM®, EVO®, DAC Magic Wire®
Streaming Services
UPnP
Airplay®
Spotify Connect
Daisy chaining
Up to 8 units
Phono stage
Standard (MM / MC)
Pre-amplified output
Yes (mono / stereo)
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
High output with power factor correction (PFC
Dimension
Width: 400mm | Depth: 400mm | Height: 40mm
Weight
9,7Kg
Power
2×250 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% THD+N
Signal-to-noise ratio
130dB
Output impedance
0.001Ω
Damping factor
8000
Bandwidth
DC-30kHz @ -0.1dB
DC-95kHz @ -3dB
Phase rotation
0.4° at 20kHz
1.8° at 40kHz
Thermal distorsion
Below measurement threshold
Wi-fi
2.4GHz / 5GHz 802.11ac, compatible with 802.11a/b/g/n
Ethernet
RJ45 100/1000 Mbps
USB
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
1x TOSLINK
Up to 1x miniTOSLINK 3.5mm
Supported formats
Up to 32bits / 192kHz PCM (USB)
Up to 24bits / 192kHz PCM (AIR®, UPnP, 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)
Trigger
3.5mm trigger connector Trig In and Trig Out
- 1 Devialet Expert 250 Pro
- 1 User Manual
- 1 Expert Remote (3 AAA batteries LR03 1,5V included)
- 1 User Manual1 Warranty booklet (5 years)
- 1 SD card
- 1 Power cable
- 1 Pair of gloves
- 1 Microfibre cloth
What’s the warranty on Expert Pro?
Expert Pro systems come with a 5-year warranty. Effective from date of purchase.
Can I order an optional Pre-Out board for my 140 Pro separately and install it by myself?
No, the Pre-Out board needs to be installed at our factory and therefore can only be purchased on initial order.
How can a firmware update bring extra power and dual-mono compatibility to the 140 Pro?
Our engineers have managed to increase the efficiency of the Class D board of the 140 Pro in order to get 10W extra power in stereo, and have been working hard in porting and adapting the dual-mono bridged mode from the 220 Pro and 250 Pro onto the 140 Pro, in order to deliver 210W in dual-mono with the same harmonic distorsion and signal-to-noise ratio than the 220 Pro and 250 Pro.