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Convertor Digital/Analog (DAC) Audio-GD D-28.38
Echipa AVmall incearca sa mentina acuratetea informatiilor din acesta prezentare. Cu toate acestea, in anumite cazuri, pot aparea mici inadvertente pentru a caror semnalare va suntem recunoscatori. Ne poti contacta oricand pentru a clarifica eventuale nelamuriri. Nu uita sa mentionezi in corespondenta ta numele exact al produsul. Fotografia produsului Convertor Digital/Analog (DAC) Audio-GD D-28.38 are caracter informativ si poate sa difere de produsul real sau sa contina accesorii neincluse in pachetul standard al produsului. Specificatiile tehnice pot contine erori de operare si pot fi schimbate fara instiintare prealabila de catre producator, neconstituind obligativitate contractuala.
4.790,00 RON / Bucata
Acest produs se aduce la comanda in termen 3-6 zile. Va rugam sa ne contactati pentru detalii.
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De la: 798.33 lei / luna
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The D28.38 by Audio-GD combines the function of DAC, disrete preamplifier / transistor (non-feedback balanced design).
It uses an ESS ES9038PRO DAC chip,which features the famous Hyperstream II technology and can support audio streams up to 384kHz / 32bit (PCM) and DSD512 (native DSD decoding).
Belonging to the last generation of Audio-GD devices, the front face displays a control panel for easy and fast access to all options relative to digital stream decoding (reconstruction filters, clock strategies .. .etc).
Connectivity
The D28 provides large connectivity and uses only high quality connectors. The device has a coaxial input, an optical input, an I2S (HDMI LVDS) input, a stereo RCA input, a stereo XLR input and on top of all, a USB input. The latter is based on an USB interface Amanero 384 combo (built-in option) which is known today as one of the best USB interface for Audio.
On the Output size, it includes a RCA (single-ended), XLR and ACSS output (balanced). On the front panel, one can found two headphone connectors. One works through a XLR 4-poles plug while the other works for regular 6.35mm jack plug.
Optimized signal path
This High Fidelity DAC is equipped with ESS ES9038Pro Sabre 32-bit. This conversion chip is capable of handling high definition audio stream formats (PCM & DSD) with and excellent signal to noise ratio.
This DAC model is one of the most famous 32bit 8 channel DAC technology. It is used in many very high audio performance environnements such as audiophile systems, mixing studios, SACD players, Blu-Ray, digital audio workstation ... etc. This component embeds ESS' Hyperstream II architecture and offers considerable signal precision with its active jitter reduction function, 132 dB dynamic range (stereo) and -120dB THD + N, .
This conversion stage is integrated in a ACSS circuit (signal via current), which allows to channel the signal through a single stage of conversion only, which results in an extremely short signal path between the DAC and the pramplification stage.
Output stages
The balanced output of uses 4 Diamond Rhombus preamplification group which were fully designed and tested for this specific audio device.
The output stages are articulated around 4 pairs of 15W transistor. this arrangement provides excellent power reserves with all the advantages that this represents in terms of headroom and distortion.
The headphone amplifier operates in pure class A (1500mW 9500mW @ 100ohm up to 25ohm) which allows the D-28 to drive most demanding headphones.
Oversized power
As usual with Audio-GD, particular care was given to the device's power-supply and all components involved in powering units.
An R-core transformer provides a clean supply operated by not less than 10 PSUs. Of these, 7 units are grouped into two-stage in order to supply the digital circuit separately and prevent contamination of a signal on the other.
Because ES9038PRO chip is highly sensitive to power supply noise and ripple, two groups of transistors are installed respectively on the right and left channels to présever any crosstalk. This feature can greatly deepen the soundstage.
Volume Control
Quality volume control is particularly important in a balanced system. Indeed, it must guarantee the accuracy of the control signal on the four channels to achieve a perfect balance. If these conditions are not met, the signal is exposed to significant levels of distortion. This can even sometimes limit the interest of a balanced system.
To maintain this balance, Audio GD offers several very relevant strategies from an audiophile point of view:
Audio-GD made the choice to use a I/V converter (Transimpedance Amplifier). The volume control is the result of a passive voltage / current conversion directly at the output of the ACSS amplifier. This keeps all the details in the signal even at very low volume.
The 4 buffer diamonds without feedback output stage, allowing to obtain a very low output impedance.
In-circuit shielding
The D-28 uses a Amanero Combo 384 as USB interface. Built into almost all Audio-GD devices, this module is known as one of the best existing USB interface. It is moreover totally electrically isolated, as to avoid being subjected to potential interference that could degrade the signal.
In addition, the various internal components / groups of the circuit are isolated from each other by multi-layer shielding plates in order to prevent any signal pollution for each stage of the device.
The IEC connector dedicated to the power supply is itself encased in a copper film to complete the insulation of the circuit.
Important: Conținutul acestei descrieri de produs a fost tradus automat și poate conține erori atât de vocabular, cât și de sintaxă și gramatică.
Specificatii Convertor Digital/Analog (DAC) Audio-GD D-28.38
| Specificatii | Output Power (balanced) 9500mW / 25 ohm 8000MW / 40 ohm 3500MW / 100 ohm 1200MW / 300 ohm 600MW / 600 ohm Output Power (Pure class A balanced) 400mW / 25 ohm 600MW / 40 ohm 1500MW / 100 ohm 1200MW / 300 ohm 600MW / 600 ohm Output Power (single-ended) 3600mW / 25 ohm 2500mW / 40 ohm 1100mW / 100 ohm 400mW / 300 ohm 200mW / 600 ohm Output Power (Pure class A single-ended) 400mW / 25 ohm 600MW / 40 ohm 1100mW / 100 ohm 400mW / 300 ohm 200mW / 600 ohm Gain H: + 20DB L: + 10DB Clocks Crystek Accusilicon Output Impedance 2 ohm Output Level Headphone Output: 19V RMS (balanced, max) Preamp Variable (symmetrical): 10V RMS Variable Preamp (RCA): 5V RMS CHA: 2MA + 2MA input sensitivity (analog) 0.7V to 5V RMS (RCA) 0.7V to 10V RMS (XLR) input sensitivity (digital) 0.5 Vp-p (75 Ohms, Coax) 19 dBm (Optical) Supported systems (USB) Windows, OSX, Linux, ISO, Android (USB2.0) Supported Sampling Rates PCM (USB) / I2S: 44.1kHz-384kHz DSD (USB) / I2S: DSD64-512 Coaxial: 44.1kHz-192kHz Optics: 44.1kHz, 96kHz Power supply 220-240V AC 50/60 Hz Power consumption 33W Weight about 5KG Dimensions Approximately W240 X L360 X H80 mm Housing 100% aluminum PACKAGE CONTENTS D28-38 x1 Metal Remote x1 Power cable x1 |
Pentru Boxe:
- Pentru performante optime este necesara pozitionarea boxelor la o distanta de minim 30-40cm de peretele din spate pentru boxele cu bass-reflex in spate, pentru cele cu bass-reflex in fata, recomandam pozitionarea la o distanta de 10-20cm fata de peretele din spate.
- Boxele vor ajunge sa functioneze in parametrii recomandati de producator, dupa minim 50 de ore (ideal 100 ore) de functionare la volum mediu. In aceasta perioada de timp, de “rodaj a boxelor”, sunetul va fi la inceput ceva mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce boxele vor functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate. Exista boxe care necesita un „rodaj” mai amplu de minim 300 de ore mai ales in cazul celor care au difuzoare de kevlar, carbon sau alte materiale de acest tip. Boxele care se „rodeaza” cel mai repede sunt cele care au difuzoare de celuloza.
Pentru Amplificatoare, DAC-uri, Preamplificatoare, Receiver Stereo & Home Cinema, Surse digitale audio-video:
- Pentru performante optime este necesar „rodarea” echipamentului, In functie de complexitatea componentelor din aparatul dumneavoastra acesta poate dura intre 30-200 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca acesta este alimentat corect conform manualului de utilizare la 220-230 Volti si trece semnal audio sau video dupa caz prin el.
- Echipamentul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce echipamentul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
Pentru cabluri:
- Pentru performante optime este necesara „rodarea” cablurilor, In functie de complexitatea conductorului folosit, cat si geometriei acestuia, „rodajul” poate dura intre 30-100 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca va trece semnal audio sau video dupa caz prin el.
- Cablul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, pe masura ce cablul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
Pentru detalii privind aceste aspecte de rodaj si nu numai, va rugam sa ne consultati!
