La Voce S2 DAC
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.

• 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

• AQ-i modular input: D111 XLR | D112 AT&T ST Fiber | D113 RCA | D114 TOSLINK with High Resolution platform

• 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 / 192kHz
- BNC coax (S/PDIF) 75 ohm  -  24 bit / 192kHz
- USB port  -  24 bit / 192kHz
- MODULAR INPUT upgradeable, options:
- AES/EBU balanced 110 ohm  -  24 bit / 192kHz
- RCA coax (S/PDIF) 75 ohm  -  24 bit / 192kHz
- AT&T (ST Fiber) -  24 bit / 192kHz
- Optical TOSLINK -  24 bit / 96kHz

• Analog output:
- RCA single-ended
- XLR balanced asymmetrical


DAC architecture
Multibit sign magnitude R2R ladder (upgradable)
Supported Native Sample Rates
AQlink / I2S serial bus  - USB PC Audio : 44.1kHz to 192kHz PCM up to 24 bits
Digital filter
Proprietary DFD (Direct From Decoder) digital decoding without digital filter
Asynchronous USB (High Speed)
USB Audio Class 2 with Type B connector
Digital Receiver
PLL (phase locked loop) technology 128 or 256 FS internally selectable
AQlink (I2S bus)
CMOS level
Oversampling factor
Digital inputs
- RJ45 AQlink (I2S serial bus) - 24 bit / 192 KHz
- BNC coax (S/PDIF) 75 ohm  -  24 bit / 192 KHz
- USB port  -  24 bit / 192 KHz
AQ-i modular input:
- AES/EBU balanced 110 ohm  -  24 bit / 192 KHz (cod. D111)
- RCA coax (S/PDIF) 75 ohm  -  24 bit / 192 KHz(cod. D113)
- AT&T (ST Fiber) -  24 bit / 192 KHz(cod. D112)
- Optical TOSLINK -  24 bit / 96 KHz (cod. D114)
Analogue Outputs
UNBAL 2 RCA Output 2.1 V RMS
BALANCED (asymmetrical output) 2 XLR Output : 4.2V RMS
Output Impedance
100 ohm RCA - 200 ohm XLR
Load Impedance
10 kohm (min.) RCA - 600 ohm XLR
Frequency Response
20Hz to 20kHz +0.5dB/-0.5dB
<0.1% 1KHz -20dB
Front Panel
Power, input selector, Phase Invert switch
Power Consumption
100-115V / 220-240V; 50 or 60Hz - 58VA
( W x D x H ) 450 x 310 x 100 mm
7 kg
Front finish
Satin Alu Silver or Satin Black
Case finish
Grey Nextel powder coated

USB Audio Class 2 Driver for WIndows
Owner's Manual

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

David Abramson

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

John H. Darko

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

Philipp Schneckenburger

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

Srajan Ebaen

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