Audionet DNP

307.720 

Síťový 2.2kanálový stereofonní předzesilovač

Klíčové vlastnosti

• Streamovací klient pro přehrávání internetových rádií (vTuner), síťových zařízení (UpnP), iPodu a hudebních dat z USB pamětí
• Podporované formáty: WAV (až do192kHz/24bitů), FLAC (až do 192kHz/24bitů), ALAC (až do 96kHz/24bitů), AIFF (nekomprimované, až do 192kHz/24bitů), AAC, WMA, OGG-Vorbis
• USB 2.0 pro externí média nebo ovládání iPodu a USB Audio 2.0 (až do 192kHz/24bitů)
• 2.0 až 2.2 stereofonní provoz (2 analogové subwoofer nebo multiroom výstupy)
• Parametrický ekvalizér a manažer zpoždění pro všechny výstupy
• Basový manažer s různými možnostmi nastavení
• Rozhraní Audionet HighBit pro zpracování veškerých audio dat, včetně DVD-A a SACD
• Příjem FM rádia s funkcí RDS
• Celková filtrační kapacita 62.000 µF
• Samostatné napájení pro digitální a analogové obvody

Frequency response:0 – 1,000,000 Hz (-3 dB), DC-coupled
2 – 1,000,000 Hz (-3 dB), AC-coupled, DC servo 1st order
Slew Rate:10 V/µsec
Channel separation:between channels: >100 dB at 20 kHz
between inputs: >108 dB at 20 kHz
Input voltage:max. 5 Vrms
Input impedance:Line: 50 kOhm real
XLR: 7 kOhm real
Output voltage:Line: max. 6 Vrms
XLR: max. 12 Vrms
Headphones: max. 6 Vrms (max. gain 6 dB)
Output impedance:Line: 24 Ohm real
XLR: 48 Ohm real
Headphones: 24 Ohm real
Filtering capacity:62,000µF

Analogue inputs

THD+N:<- 108 dB from 20 Hz up to 20 kHz at Vin 3 Vrms
SNR:> 120 dB at 1kHz referred to Vin, max

Digital inputs

Sample frequency:32 up to 192 kHz
THD+N:Front: <-104 dB

 

Power consumption:< 1 W Stand-by, max. 150 W
Mains connection:220…240 V / 50…60 Hz or 100..120 V / 50..60 Hz
Dimensions:width 430 mm
height 110 mm
depth 360 mm
Weight:12 kg

i-fidelity.net

Referenze

Construction

The DNP’s development and realization combines cutting edge circuit design with Audionet’s eighteen years of experience in digital and analogue technology. More than 5000 individual components ensure accurate signal processing. Isolated and autonomous power supplies for digital and analogue sections further reduce power source-related imperfections.

High-performance processors working in combination with Audionet’s proprietary software for digital signal processing manage the digital signal processing of the Audionet DNP.

Signal Processing

In order to optimize the D/A conversion, Audionet’s engineers pursued the uncompromising reduction and elimination of jitter, resulting in a highly exact, musical and solid sound image, stage and depth. To this end, we have developed Audionet’s Intelligent Sampling Technology, which performs with stellar results the analogue signal recovery from the digital bit stream. Audio data is routed through a two-stage filtering and decoupling procedure.

First, the input data is filtered with Audionet’s proprietary software using a powerful signal processor and up sampled synchronously, through filters designed for optimal transient and frequency response. At the next stage, the optimized data is then resolved through an asynchronous up sampling procedure at 192kHz/24bit, allowing the complete isolation from any potential jitter originating from the input clock. The resulting audio data is then passed to two high-performance converters, which are clocked by dedicated ultra high precision quartz crystals and individually processed per channel into analogue signals. This method ensures that jitter faults are eliminated – completely lossless – in the analogue signal to the highest degree, resulting in unmatched clarity, room depth, and stage imaging. In addition, power flux interferences are avoided by powering the digital section of the Audionet DNP entirely separately from the analogue section.

Architecture

No compromise is made in craftsmanship of the analogue signal processing as well. Circuit construction has been designed for maximum performance using only the finest components. At each point, we use the highest quality parts the world has to offer, many of them custom made. For example, filter caps are designed to our specifications using Japanese silk dielectrics, custom mica caps, and selected high-current foil caps from Germany, manufactured for an ultra low loss angle. Internal wiring is done with top-grade silver/gold alloy, and the best available connection systems from our colleagues at WTB in Essen.

In order to meet our own standards of performance, operational amplifiers used in the Audionet DNP are manufactured in-house. Each contains more than 86 discrete components, for a unique gain-bandwidth product. The volume level is set by an electronically switched, real time linearized precision resistor network, for unmatched accuracy. To optimize the high frequency properties, the circuits have been miniaturized, and signal paths reduced to a minimum. The circuit layout eliminates sound marring components such as coils, chokes, and capacitors in the signal path.

Brand

Audionet