AQVOX USB 2 D/A MKII

• Fabricant : AQVOX
• Modèle : USB 2 D/A MKII
• Catégorie : Convertisseurs Numériques Analogiques
• Fiche créée le : 20/08/2011

Introduction: fully balanced DAC - USB DAC - HighEnd DA converteter - PC becomes audiopihile

The USB 2 D/A is one of the very rare true audiophile USB DAC´s available with defeatable upsampling to 24/192 DAC - Digital to Analog Converter for use in high-end or pro audio environment. Ideal for the new computer audiophile.
Supports up to 24bit / 192kHz sampling frequency via S/PDIF COAX and AES/EBU, TOSLink and USB. Furthermore it is designed to work as an external computer soundcard ( streaming device ) via USB 1.1 connection (no drivers needed for windows or apple). (with optional USB2.0 Upgrade up to 192kHz/24bit inclusive ASIO)
With the integrated audiophile headphone amplifier all digital inputs (even USB) can be monitored.
The USB2DA improves the audio signal of any CD/DVD Player, PC, Notebook, DAW´s, Audio Streamer, Audio Server etc...all connectable digital audio sources. And as streaming partner for Notebook or Computer or MAC the -USB 2 DA- becomes a part of a true audiophile hifi playback system.

Compatibility:
The USB input/output is compatible with Windows98SE, Windows 2000, XP, Vista, Linux, Mac OS

4 Digital inputs: AES/EBU, COAX, TOSLINK and USB (USB bridges up to 10m). Für längere Strecken benötigt man USB-Repeater bzw. USB Booster, die sich hintereinander schalten lassen.)

2 Analog outputs: balanced XLR and unbalanced RCA.

1 Digital output: COAX, TOS, AES/EBU-Input are routed to the USB-output (up to 48kHz/16bit).

Audio file-formats: alle abspielbaren Formate:
lossless: ALC, AiFF, FLAC, FLA, WAV, PCM, WavPack, SPDIF, via USB-Asio, Monkeys Audio, AIF, Audio-CD, CDA, Apple Lossless

lossy file formats (lossy) MPC, MP+, MPP, MP1, MP2, MP3, MP4 , LossyWAV, WMA, WMV, AU, OGG, AAC, MOV, AVI, AU, IFF, SVX, SND, AAC, APE, MAC, VOC, mp3PRO

USB Formatconverter
Converts from and to following formats : USB in/out maximum 48kHz/16bit
USB to SPDIF - S/PDIF
SPDIF - S/PDIF to USB
COAX to USB
USB to COAX
TOSlink to USB
USB to TOSlink
AES/EBU to USB
USB to AES/EBU
USB to Analog symmetrical / balanced
USB to Analog unsymmetrical / unbalanced
Analog symmetrical / balanced to USB
Analog unsymmetrical / unbalanced to USB
PCM to USB
USB to PCM
digitalsymmetrical / digital balanced to USB
digital out to USB
Cinch to USB
USB to Cinch

sampling rate, sample rate, or sampling frequency in kHz

AES/EBU input:
16kHz, 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz at 16bit / 24bit

COAX input
16, 32, 44.1, 48, 88.2, 96, 176.4, 192 at 16bit / 24bit

TOSlink input
16, 32, 44.1, 48, 88.2, 96 ( sometimes up to 176.4 and 192kHz) at 16bit / 24bit

USB - INput and OUTput
(with optional USB2.0 Upgrade up to 192kHz/24bit inclusive ASIO) 16, 32, 44.1, 48, at 16bit

No Op-Amps in signal path
The AQVOX USB 2 D/A was designed using innovative discrete technology. Only single transistors are used in the amplification stages. No integrated circuit amplifiers (OP-amps) and the latest state of the art components to sound most dynamic, highly detailed yet neutral and untiring. We believe the USB 2 D/A to be a unit with outstanding sound quality and an excellent value.

NEW in the MKII Version:
Headphone amplifier in audiophile quality and USB headphone amp.
In the USB2DA-MKI version, only the USB-input was connected to an average quality headphoneamplifier, but in the new MKII version we connected ALL inputs (USB, AES/EBU, COAX and TOSLINK) to the new highend Headphone-Amp. The fully discrete Class-A circuitry has no IC in signalpath and delivers exceptional soundquality.
A first class monitoring solution. The headphoneamp is coupled directly to the DAC chip.
This saves the voltage gain stage - a shorter signalpath is almost not possible.

No global overall feedback
Fully discrete (single transistors) Single Ended Class A amplification technology and the use of just one amplifier per balanced analog output stage provides you with today's best possible sound quality. The amplifier section runs without global overall negative feedback, only lokal FB is used. Thus the amplifier generates drastically less dynamic distortions.

JitterEx precision-reclocking 192kHz/24Bit upsampling
Before the digital to analog conversion process, all signals are upsampled and converted to 192kHz/24Bit (unless the bypass is activated). This procedure is advantageous because DACs can offer better performance at higher sampling rates. Upsampling enables filtering to take place far beyond the range of human hearing, as well as offering other, audible benefits, right across the audio band, including improved transient response and less ringing. This results in a more open, transparent sound, tighter bass and a generally more "musical" sound. Anyhow - AQVOX means it sounds better without Upsampling - so set on BYPASS.

True balanced circuitry for entire analog signal path
Featured with an AES/EBU digital input and a balanced XLR analog output the USB 2 D/A is the best choice for professional users to monitor digital recordings. True balanced circuitry for entire analog signal path. The USB 2 D/A is also excellent for persons who strive for the highest level of sound quality from their home audio systems, as well as for computer users who like to get the best output quality from their Workstations or Notebooks. No need to use a low-fi inbuilt soundcard. Furthermore users can upgrade their micro hifi system (portable CD, MD... as far as they provide a digital output) to a real high-end solution.

NEW in the MKII Version: LowNoise power supply, with 10dB quiter power output.
Our designers created a completely new LowNoise powersupply. Now the power output delivers with 10dB lower noise, cleaner energy and has a higher efficiency. Some better prefilters where added to bann the dirt also in lower frequencys. At the powersupplys output resides a linear regulator. The result is audible. And the sound of the MKII is now better even under bad power conditions.

The most audiophile ASIO driver comes from AQVOX produces least jitter, is compatible with some other USB-DAC´s and plays with all Windows based mediaplayers/soundprograms. You can order this driver directly from us, just contact us here: contact form
The trialversion is free, here more info: http://www.aqvox.de/tech.html#matrix

Any PC´s, Computers, Notebooks with an USB interface may be used as "audio-datasources ":