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Aqua La Scala MKII Optologic DAC

Aqua HiFi La Scala MKII Optologic DAC proves that an instant classic does not mean a product whose destiny is to become obsolescent, like most of the products in the high-end world. The already extraordinary sound quality of this icon is now improved in every aspect: time coherence, microdynamics, timbre, and without losing that magic atmosphere for which La Scala is widely renowned. La Scala MkII keeps the VALVE / MOSFET hybrid circuitry, with now a pair of specially selected ECC81 tubes - a High-Frequency triode - for its extremely low noise and superb transparency.

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Take classic sound to the next level with the Aqua HiFi La Scala MKII Optologic DAC. Its iconic sound quality is now improved for greater time coherence, micro dynamics, and vibrant timbre, thanks to a pair of specially-selected ECC81 tubes and hybrid VALVE / MOSFET circuitry. Experience unparalleled transparency and enjoy a magical atmosphere on every note.


  • High-performance proprietary FPGA-based digital decoding without digital filter
  • Galvanic and magnetic isolations between the FPGA and R2R ladder converter
  • Discrete R2R ladder DACs with low-noise precision resistors
  • 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
  • High-performance AQ Discrete Regulator (MOSFET, J-FET, BJT) for analog and digital DAC’s power supply
  • Valve-Mosfet direct coupling analog stage in pure class-A without negative feedback
  • MOSFET Virtual battery circuit for analog anode supply
  • Soft-start power-up for extended tube life
  • etherCON RJ45 (AQlink) input connection, employs CAT6 cable can connect both RJ45 and professional etherCON RJ45
  • Two separate low-noise power transformers, one for the analog and one for the digital section
  • MODULAR DESIGN with upgradeable multi-board system
  • Regulated DC filament supplies with soft start for tubes
  • 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 asynchronous USB module with resolution 44.1kHz to 384kHz PCM up to 24 bits, DSD64, DSD128, 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 the front panel
  • High-quality parts selected for sound quality:
    • 105° long life capacitors
    • low noise Metal Foil ultra-precision resistors
    • double metalized film pulse capacitor
    • ultra-fast diodes
    • halogen-free cables
  • Aluminum anti-resonant cabinet with Nextel
  • Designed and handmade in Italy
  • Input:
    • RJ45 AQlink (I2S serial bus) - PCM 24 bit / 384kHz – DSD64, DSD128 via DoP
    • BNC coax (S/PDIF) 75 ohm - PCM 24 bit / 192kHz – DSD64 via DoP
    • RCA coax (S/PDIF) 75 ohm - PCM 24 bit / 192kHz – DSD64 via DoP
    • AES/EBU balanced 110 ohm - PCM 24 bit / 192kHz – DSD64 via DoP
    • USB port - PCM 24 bit / 384kHz – DSD64, DSD128 via DoP
    • AT&T (ST Fiber) - PCM 24 bit / 192kHz – DSD64 via DoP (optional)
  • Analog output:
    • RCA single-ended
    • XLR balanced with transformer