Το Extraudio DAC2 Quad R-2R Ladder ειναι ενας full balanced ψηφιοαναλογικος μετατροπεας 32bit με δυνατοτητα διαχειρισης και DSD αρχειων 32bit 768kHz. Εισοδοι : 1x USB, 1x Coaxial, 1x Optical, 1x BNC και 1x AES/EBU, 1x I2S, 1x bluetooth, 1x Ethernet. Outputs 2x pairs RCA και 2x pairs XLR.

Εγγυηση Αντιπροσωπειας. Δυνατοτητα ανταλλαγων, δοσεων.

The R-2R Ladder is an ultra-high precision 32-bit depth DAC with FPGA, which produces an analog sound, full of nuances, without digital harshness, without any type of error.

Thanks to the depth of 28 to 32 bits, the resistance ladder is corrected through the second FPGA that is only responsible for converting and correcting the linearity of the 4x DAC modules. Then we use another ARM FPGA for the sample rate functions, for inputs selection and conditioning of digital signals, that freeing the main FPGA from all this work. That way a unique sound is achieved and with very low voltage steps on the R-2R ladder, approximately each step is equivalent to a tiny jump of 0.04 Volts from MSB (Most Significant Bit) to LSB (Least Significant Bit). All this added to the R-2R resistor ladder of our DAC,s proprietary technology using about 600 pieces of 0.01% tolerance Vishay Foil Resistors ® of the highest quality, handmade soldered in the Netherlands with temperature control and high quality tin. These makes the sound even more exact, but very analog and musical, with a lot of texture and spatiality, very whole and without digital deficiencies in digital steps, (the lower the step height, the higher the quality) and smoothness in the digital conversion, that’s why we use a 32-bit depth.

Features

Proprietary modular concept
Our DACs are designed with ease of future expansion in mind, which is why all of its internal construction is modular, so we can offer the end-user an updated technological solution and extend the life of our products, without having to change and buy another DAC, simply update it by changing some of its modules, since Digital technology is not like analog technology, which is always in constant evolution, this allows the audiophile user to be up to date and is also part of Extraudio’s philosophy and our fight against programmed obsolescence.

This modular concept of electronic circuit design is more expensive economically and requires more design effort, but it allows us to concentrate our efforts on the different parts individually, this design process has given us the advantage of isolating different parts in our own circuits. Printed manufactured in The Netherlands with 4 layers and electrolytic gold plated, achieving elimination and reduction of noise in each stage and module and separating the digital control and analog parts and thus all our DACs are prepared for the future.

Proprietary Programmable Audio Oscillators
All the DAC manufacturers talk about technicalities about audio oscillators and clocks for digital signals etc, we will just say that we use several oscillators and clocks that do their job accurately in femtoseconds and are calibrated to perfection, without jitter, this makes that the performance of the digital conversion is greater and the ultra-low jitter and the digital to analog conversion more linear and above all the music that emanates from the DAC be more human and not digital in character.

Why don’t we use screens or other digital displays at Extraudio?
Many people ask us why we don’t use OLED, LCD, or TFT screens…?
Marketing, aesthetics, and image are a matter of the competition and we are focused solely on the reality of the restitution of recorded music, we leave banal or superfluous things to others.

Many elements such as screens or other digital display devices pollute the audio system generating electrical interference and polluting the masses.

Our products are minimalist on the outside and incredibly complicated on the inside, everything happens inside the products and the necessary information for the use of the product is simply displayed with LED indicators.

Keep in mind that it would be easier and cheaper to cut a rectangle and mechanically apply a screen to the front panel, but we do not work to control costs and use superior machining on solid aluminum front panels, even so, and with the extra cost of the mechanization we incorporate all the necessary indicators for the use of the product.

The importance of dual and quad power supplies
Our power supplies are designed with extreme care, powering an audio product is vital to a perfect stereo feel or what is known in pro audio as dual mono, the dual-mono feel, you can’t get it if you don’t use them. multiple transformers and separate power supplies for each channel, the DAC2 incorporates 3 proprietary quad ultra-low noise medical-grade transformers, custom-built especially for the DAC2 in the Netherlands, and 6 separate power supplies.

Our power supplies include parallel capacitor banks creating a store of power energy for when complex musical passages need to be played, like a full symphony orchestra playing all its instruments, it’s like a 500 horsepower car, why Do we need 500 horsepower if we drive at 100km/hour? In the world of high-end audio, we need that extra horsepower, whether they are amps or watts, for when they are needed in passages or very complex audio compositions, and if those are not extra horsepower, which in our case is the capacitor banks of each of the individual sources, the speed, the expressiveness and the reality of the music and the dynamics disappear, that’s why the DAC2 has a power bank of 60.000 uF in parallel to get much more energy stored and lower the ESR and impedance of the power supplies, as well as correct the power factor.

The power supplies for Extraudio products are extremely quiet and are designed with powering like pro audio in mind, by mono power rails completely separating the power supplies for the different digital and analog parts, creating a true dual-mono feeling. not pseudo-stereo.

Finally, we use Schottky diodes in the rectification of alternating current to direct current. These diodes are very special and expensive, they provide us with high efficiency, ultra-fast recovery time, low junction capacitance, low direct voltage drop, high-frequency operation, high current density, and are very quiet. The DAC2 is provided with 18 of these diodes.

Many engineers ask us, how can it be that we reach such low signal noise or THD figures and what are they used for in our power supplies?.

Our noise floor is almost absolute silence -180db, this value is not usual, we have been dedicated since 2008 to the research and development of high-end audio products and our answer is this:

All this precisely produces an unprecedented level of performance, silences are part of the music and if there is no absolute silence in the power supplies the reproduction of the music is polluted, it is that complicated and that simple at the same time, because in Extraudio “less is more”.

Proprietary USB 2.0 power module.
In the USB 2.0 input, we also use a module, with a simple action on the DAC that can be updated in the future as there are constantly new features for USB communications.

We know the importance of this entry and its advantages, as well as the innovations that will come out in the future and the existing formats, for example, MQA or other formats such as DXD, DSD, or higher sampling rates, but with a simple change of module the end-user will always be up to date in the digital future.

This module contains complete isolation from the outside to the inside of the DAC.
Up to a depth of 32bits, 768Khz, DSD X2, X4, X8.
Oscillators Low Phase Noise XO
Output format: I2S 32bit or DSD64, DSD128 – On Windows up to DSD256, DSD512
Supported sample rates: 44.1kHz to up to 384Khz.
No drivers are needed for MAC OSX, Linux with UAC2 kernel, KS, Wasapi, WDM, or ASIO Drivers for Windows 7, 8, 10, 11, 32, and 64bit.

Proprietary module with two I2S and Bluetooth inputs, LDAC, APTX-HD, APTX-LL.
We have designed this module for the convenience of the user, which can connect devices or digital sources from other brands via I2S, which is the interface and native language of digital audio, without “Integrated Interchip Sound” compression, and which goes directly to the R-2R digital engine of the DAC Extraudio, is the only real digital connection format without any type of compression, it is the native binary stream, this delivers superior sound quality through this DUAL digital input that has an Rj45 or HDMI LVDS input for greater compatibility as well as a selector rotary that allows 10 combinations of bits in a high or low position, making any digital product compatible with this type of native digital I2S output.

In this same I2S module we have provided the high-end R-2R DAC with Bluetooth HD Aptx-HD wireless connection, this connection has been designed and interconnected in a proprietary way in Extraudio via native I2S and has been applied in a revolutionary way directly by I2S, achieving a signal of 24bits and 48 to 192Khz and a higher resolution than any transport or traditional CD player of 16bits 44.1Khz.

In the future, we will implement the latest firmware and hardware versions of this wireless technology, which for us is the future, and thus ensure that our DACs are always up to date.

This advanced wireless connection allows us to connect via streaming from our computer, laptop, NAS, or from online services, for example; Amazon Music HD, Apple Music, Qobuz, Tidal, etc, over the Internet and have millions of albums available immediately and without technological complications.

With impressive ease of use for anyone, whether using your music offline on your devices or online via the Internet, from a computer, laptop, tablet, iPad, or mobile device. A Bluetooth 5.0 APTX HD or higher compatible device is required.

Connectivity:

• DAC2 Direct and High-level Outputs:
  • The DAC2 has two different sets of outputs: A set of unbalanced RCA and XLR outputs that connect directly to the R2R ladders, without the use of an active output stage. This direct output of the resistor ladder is the most transparent and purist.
  • The second set of balanced RCA and XLR outputs uses a pure class-A biased BJT-type transistor output stage. These outputs have a higher voltage allowing compatibility with any type of preamplifier and also provide the characteristic sound of Extraudio with more speed, dynamics, and punch.
• DIRECT OUTPUT R-2R:
  • RCA SE, Impedance: 50 Ohms, Audio level: 2,3V
  • XLR Balanced, Impedance: 3 Ohms, Audio level: 4.6V
  • HIGH-LEVEL OUTPUT CLASS A:
  • RCA SE, Impedance: 50 Ohms, Audio level: ≥ 6V
  • XLR Balanced, Impedance: 3 Ohms Level: ≥ 12V
• 8 Galvanic Isolated digital inputs:
  • 1 RCA SPDIF
  • 1 BNC SPDIF
  • 1 XLR AES EBU
  • 1 Optical
  • 1 Audio Class USB 2.0 / Type B, Isolated, Full/High Speed
  • Proprietary module with native digital inputs and Bluetooth:
  • “Integrated Interchip Sound” I2S RJ-45 or HDMI LVDS
• + Rotary selector for high or low bit 10 positions.
• Bluetooth 5.0 Aptx HD or higher.
• Optional remote control

Specifications

• Converted Type: Extraudio proprietary R-2R DAC topology.
• Frequency response: +/-0dB 5Hz to 750Khz
• S/N ratio at 20Khz Bandwith >132dB
• THD @ -1dB <0.004%
• Resistor precision 28bit 0.01%
• Clock Jitter RMS 0.3pS typical
• Supported Formats:
• SPDIF: up to 24 bits / 192 Khz
• USB/I2S: up to 24 bits / 384 / 768 Khz
• DSD-DXD: up to DoP DSD64/DSD128/DSD256/DSD512
• Digital filters anti-aliasing Installed:
• 4 Digital filters, Red, Orange, Green, Off
• Compatible with online streaming services via bluetooth and USB: Spotify, Apple Music, Tidal, Qobuz, Amazon Music HD, Deezer, Pandora and others.
• Control: Select Input, optical rotary encoder (ALPS 18 steps)
• Power requirements: 115V or 230VAC 50/60Hz, 50W – 0.5W standby
• Proprietary Extraudio AC input filters, EMI and RF anti-interference
• Dimensions:
• (Product W x H x D) 44 x 12 x 40 cm
• (Shipping W x H x D) 66 x 66 x 37 cm
• Weight: 16 kg