A never ending story: upgrading to the Optologic DAC Again, La Scala D A converter 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. After the first appearance in the flagship Formula DAC, the proprietary D A conversion system developed by Aqua is now available for La Scala MkII dac. So, current Owners, have the opportunity to upgrade their unit in order to reach to the revolutionary Optologic D A conversion system. 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 VALVEMOSFET hybrid circuitry, with now a pair of specially selected ECC81 tubes - a High-Frequency triode - for its extremely low noise and superb transparency. FEATURES the new Optologic Conversion SystemHigh performance proprietary FPGA-based digital decoding without digital filterGalvanic and magnetic isolations between the FPGA and R2R ladder converterDiscrete R2R ladder DACs with low noise precision resistorsJitter free digital interface AQlink (I2S protocol), uncompromising digital connection to La Diva cd transportZero S PDIF Jitter design, digital receiver stage PLL (phase locked loop) technologyHigh-performance AQ Discrete Regulator (MOSFET, J-FET, BJT) for analog and digital DAC s power supplyValve-Mosfet direct coupling analog stage in pure class-A without negative feedbackMOSFET Virtual battery circuit for analog anode supplySoft-start power up for extended tube lifeetherCON RJ45 (AQlink) input connection, employs CAT6 cable can connect both RJ45 and professional etherCON RJ452 separate low noise power transformers, one for the analog and one for the digital sectionMODULAR DESIGN with upgradeable multi board systemRegulated DC filament supplies with soft start for tubesFully discrete analog stage, not even a single Op-Amp is usedProprietary USB Firmwaredriver : Apple MAC OS - Linux OS : USB asynchronous native support, no need to install drivers softwareFully 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-speedDigital phase selector on front panelHigh-quality parts selected for sound quality: - 105 long life capacitors - low noise Metal Foil ultra-precision resistors - double metallized film pulse capacitor - ultra-fast diodes - halogen free cablesAluminium anti-resonant cabinet with NextelDesigned and handmade in ItalyInput: - RJ45 AQlink (I2S serial bus) - PCM 24 bit384kHz - DSD64, DSD128 via DoP - BNC coax (S PDIF) 75 ohm - PCM 24 bit192kHz - DSD64 via DoP - RCA coax (S PDIF) 75 ohm - PCM 24 bit192kHz - DSD64 via DoP - AES EBU balanced 110 ohm - PCM 24 bit192kHz - DSD64 via DoP - USB port - PCM 24 bit384kHz - DSD64, DSD128 via DoP - ATT (ST Fiber) - PCM 24 bit192kHz - DSD64 via DoP (optional)Analog output: - RCA single-ended - XLR balanced with transformer

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