S is for "Super" and "Streaming"

The bestselling integrated amplifier/DAC combined with our NPM streaming solution offering fantastic sound quality, 250 Watts of power and loss less wireless streaming in one beautiful cabinet.

This brand new amplifier may look like the standard DIA-250 NPM amplifier we introduced three years ago, but in fact we put more than a years work into improve every part of the DIA-250 NPMs already fantastic award winning performance. We changed and improved the electrical circuits and layouts in more than twenty ways, the most significant being:

• Optimized mains filter
• Improved general and local power supplies
• New input stage
• Improved output stage
• New analogue stages in the D/A converter
• Improved digital signal routing
• Updated firmware
• Improved connectors
• Incorporates the high resolution aptX Bluetooth module for all your streaming requirements

More details, better micro dynamics and more "air" around the performing musicians. Everything is served with naturalness and a musicality normally reserved big expensive class A/B amplifiers - the result is stunning!

Class-D with smooth analogue music
The DIA-250 NPMs amplifier offers a state of the art Class-D output stage with dedicated and optimized switch mode power supplies. The multiple stage power amplifier is built around proven technology from International Rectifier, optimized with a precision high frequency oscillator and PWM modulator. A pair of precision switching MOS-FET transistors, with super low on-resistance ensures the high frequency switching is done perfectly and with as little loss as possible. The output filters are made from quality PP capacitors and low DCR coils, converting the high power PWM signals back into detailed and smooth analogue music.

More than just an Amp
The built-in D/A converter offers real high end performance, enabled by the use of a dedicated power supply, a balanced-drive Burr-Brown PCM1794 D/A converter, an optimized high bandwidth I/V converter, and an analogue stage with low-Q, low pass filters. All digital inputs are upsampled to 24bit/192kHz. This D/A converter will upgrade any digital source - such as wired or wireless streaming from your computer or CD drive - to a high end level of detail and musical performance.

Versatility and Connectivity
We had our eye on versatility and connectivity when designing this amplifier. The DIA-250 NPM offers not only a high resolution aptX Bluetooth streaming module,  but also a wide range of digital and analogue inputs, but also line outputs, a trigger signal for external power amplifiers, and a configurable home theater input. The HT input can turn the amplifier into a fixed level power amplifier for use in a surround setup, without compromising the sonic performance.

Network Player Module (NPM)
The Network Player Module is very versatile and it can be operated in several ways; one is as an endpoint to your Roon server, controlling the module through Roon software enabling local music, access to internet radio, Tidal etc. Another way of using the module is through an APP that will access to local media files by UPnPDLNA plus various streaming services such as Tidal, Deezer and Qobuz.

Features:

• 2x 250W@8ohm / 2x 500W@4ohm
• Class D output stage
• Built in 24bit/192kHz D/A converter with upsampling
• Coax, optical and asynchronous USB digital input up to 24bit/192kHz, optical up to 24bit/96kHz
• aptX Bluetooth 4.0 receiver for all your streaming applications.
• Accepts digital streaming directly from Apple iPad

• MQA (Roon), AAC, AIFF, MP3, FLAC, WAV, WMA, Apple Lossless, OGG, Monkeys, Supports gapless playback
• Nonmagnetic enclosure
• Direct function; enables use in home theater systems
• Designed, developed and build in Copenhagen, Denmark

 

Technical data

Technical stuff
Output power	2x 250 W / 8 - 2x 500 W / 4
Frequency response	20 Hz-20 kHz - 0.5 dB, and 2 Hz-70 kHz - 3 dB
Total Harmonic Distortion	< 0,01% at rated power
Signal to noise ratio	> 110 dB
Line out maximum level	13V balanced, 6,5V unbalanced
Total Harmonic Distortion	< 0,001% pre out
Input impedance	20 k RCA or 40 k Balanced
Line output impedance	75
Voltage gain	26 dB (+10 db headroom)
Recommended speaker load	4 -16
Connectors
Balanced analogue inputs	1 pair gold plated XLR Neutrik
Unbalanced analogue inputs	2 pairs of gold plated RCA Stereo
Digital inputs	1 pc USB type B, 1 pc Toslink, 1 pc RCA
Balanced analogue outputs	1 pair gold plated XLR Neutrik
Unbalanced analogue outputs	1 pair of gold plated RCA Stereo
Speaker output	2 pairs of gold plated safety banana
Trigger, 12 V	1 pc mini jack
Size & Power
Power Requirements	115 VAC/230 VAC, 50 Hz/60 Hz, 1000W max
Power consumption stdb/idle/max	< 1W/23W/1000W
Dimensions (WxHxD)	325 x 105 x 420 mm / 12.8 x 4.1 x 16.5"
Weight	10 kg / 22 lb