La Voce S2 D/A Converter
© AQ TECHNOLOGIES S.r.l.

VAT : IT 08602220967

aqua - acoustic quality  •  Milano  •  Italia


Native Sample Rates Supported
S/PDIF - AES/EBU :
24 bit / 192 KHz
AQlink - I2S serial bus :
24 bit / 384 Khz
Asynchronous USB
(High Speed)
USB Type B
Digital Receiver
PLL (phase locked loop) technology 128 or 256 FS internally selectable
AQlink (I2S bus)
CMOS level
Digital filter
Proprietary DFD (Direct From Decoder) digital decoding without digital filter
Oversampling factor
1x
Digital to analog conversion type
MODULAR:
Multibit sign magnitude R2R ladder (PCM1704 DAC option)
Analogue Outputs
UNBAL 2 RCA Output 2.1V RMS
BALANCED (asymmetrical output) 2 XLR Output : 4.2V RMS
Current / voltage conversion (I / V) Resistor passive (I / V)
Output Impedance
100 Ω RCA - 200 Ω XLR
Load Impedance
10 k Ω (min.)
Frequency Response
20Hz to 20kHz +0.5dB/-0.5dB
THD + N
<0.1% 1KHz -20dB
Front Panel
Power, input selector, Phase Invert switch
Power Consumption
100-115V / 220-240V; 50 or 60Hz - 58VA
Dimensions
( W x D x H ) 450 x 310 x 100 mm
Weight
7 kg
Front finish
Satin Alu Silver or Satin Black
Case finish
Grey Nextel powder coated
• High performance proprietary DFD (Direct From Decoder) digital decoding without digital filter for purest digital signal quality

• Galvanic isolated S/PDIF - AES/EBU Digital input

• Jitter free digital interface AQlink (I2S protocol), uncompromising digital connection to La Diva cd transport

• Zero S/PDIF Jitter design, digital receiver stage PLL (phase locked loop) technology

• precision sign magnitude R2R ladder DAC with 2 Burr-Brown PCM -1704 arrayed in  dual mono configuration (PCM1704 DAC option)

• Passive current / voltage conversion (I / V)

• Discrete Regulator (MOSFET, J-FET, BJT) for analog and digital DAC’s power supply

• RJ45 (AQlink) input connection, employs CAT6 cable

• 2 separate low noise power transformers, one for the analog and one for the digital section

• MODULAR DESIGN with upgradeable multi board system

• Fully discrete analog stage, not even a single Op-Amp is used

• Proprietary USB Firmware / driver :
Apple MAC OS - Linux OS : USB asynchronous native support, no need to install drivers software

• Fully upgradeable Bit perfect asynchronous USB module with resolution up to 24 bit and 192 KHz, operates with computers running OSX 10.7 and above,
WINDOWS 10 , 8 , 7 and XP ASIO - WASAPI bit perfect high-speed

• Digital phase selector on front panel

• High-quality parts selected for sound quality:
   - 105° long life capacitors
   - low noise Metal Foil ultra-precision resistors
   - metallized film pulse capacitor
   - ultra-fast diodes

• Aluminum anti-resonant cabinet with Nextel

• Designed and handmade in Italy

• Input:
- RJ45 AQlink (I2S serial bus) - 24 bit / 384 KHz
- BNC coax (S/PDIF) 75 ohm  -  24 bit / 192 KHz
- USB port  -  24 bit / 192 KHz
- MODULAR INPUT upgradeable, options:
- AES/EBU balanced 110 ohm  -  24 bit / 192 KHz
- RCA coax (S/PDIF) 75 ohm  -  24 bit / 192 KHz
- AT&T (ST Fiber) -  24 bit / 192 KHz
- Optical TOSLINK -  24 bit / 96 KHz

• Analog output:
- RCA single-ended
- XLR balanced asymmetrical (optional)

DAC options:

- cod. D104K - Burr Brown PCM1704 (2 dac) - sign magnitude R2R ladder DAC 24bit / 192 kHz - DFD MODE
- cod. D101 - Philips TDA1541A - R2R 16 bit / 96 kHz - DFD MODE (R1, S1 grade selection on request)
- cod. D165 - Analog Devices AD1865 - R2R 18 bit / 192 kHz - DFD MODE
FEATURES

SPECIFICATIONS

MORE PICTURES

USB ASIO Driver
Class 2.0 USB Audio drivers (only needed in Windows)
Version 1.61b ( certified for Windows 10 ) ZIP >
La Voce S2 D/A Converter

Owner's Manual >

A Newly Refined Second-Generation La Voce D/A converter makes its debut
The new La Voce S2 combines product innovation and state-of-the-art technology, producing superior sound performance and the best styling.
Designed to provide absolute modularity and the ultimate in sound quality, La Voce S2 D/A converter is the culmination of years of aqua’s research in the areas of electronic engineering in relation to digital audio reproduction.

Further refined La Voce S2, a revolutionary design which employs modular R2R type converters in DFD configuration:

- cod. D104 - Burr Brown PCM1704 (2 dac) - sign magnitude R2R ladder DAC 24bit / 192 kHz
- cod. D101 - Philips TDA1541A - R2R 16 bit / 96 kHz (R1, S1 grade selection on request)
- cod. D165 - Analog Devices AD1865 - R2R 18 bit / 192 kHz
INFO & SUPPORT

LA VOCE S2 review by Philipp Schneckenburger - EINSNULL
REVIEWS AND AWARDS

"It really is a wonderful overall package that has me wonder."

Srajan Ebaen, 6MOONS

"The La Voce is really a great DAC. It looks classy, is well made and sounds superb." (TRANSLATED)

Philipp Schneckenburger, EINSNULL



LA VOCE S2 review by Srajan Ebaen - 6MOONS >

LA VOCE S2 review by Krzysztof Kalinkowski - STEREOLIFE >
"As far the ability to render emotion of music, Italian DAC fell far the best." (TRANSLATED)

Krzysztof Kalinkowski, STEREOLIFE
The DAR-KO award by John H. Darko - DIGITAL AUDIO REVIEW

"One word to nail this Aqua’s essence? Rectitude."

John H. Darko
DIGITAL AUDIO REVIEW

"R2R NOS DAC is the genuine article; incredibly natural sounding with all genres"

David Abramson
STEREO TIMES

La Voce S2 dac AWARDED again - Stereo Times Most Wanted Component 2015 by David Abramson