aqua La Voce S2 D/A Converter

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aqua La Voce S2 D/A Converter

這次送來的La Voce S2 D/A Converter等級比La Scala MKII D/A Converter要入門一些，可以說是La Scala MKII D/A Converter的初階版。

原廠還附贈一條電源線，看起來挺有質感的。

La Voce S2 D/A Converter的輸入端子是可以指定的，第一和第二個檔位的選擇如照片上所示，可以依照使用者的需求選擇，而且也能在未來更換。這次測試的是使用BNC和AES/EBU。

外型上其實和另兩款產品非常一致，尤其是和La Scala MKII D/A Converter幾乎長得一模一樣，在輸入源的部分比La Scala MKII D/A Converter少了一組。

從左邊看起，類比輸出部分有平衡XLR和單端的RCA輸出。數位輸入部分第一組為S/PDIF BNC同軸(75歐姆)，支援的音樂格式最高24bit/192kHz。第二組為AES/EBU(110歐姆)，支援的音樂格式同樣為24bit/192kHz。前面兩組輸入端子是可以更換的，還有其他的模組可以選擇。第三組為RJ45 AQlink(I2S)，可以用來連接自家的轉盤La Diva cd transport，支援的音樂格式最高24bit/384kHz。第四組是連接PC AUDIO的USB端子，支援的音樂格式最高24bit/192kHz。

另外其他可選擇的輸入端子還有RCA同軸(75歐姆)，支援的音樂格式最高24bit/192kHz。AT&T(ST Fiber)，支援的音樂格式最高24bit/192kHz。光纖TOSLINK，支援的音樂格式最高24bit/96kHz。

前面板的控制切換很簡潔，一個是電源開關，另一個是輸入源切換，在輸入源部分只有以羅馬數字顯示1~4，與後面的端子標示是對應的。

右邊有一個相位轉換的撥桿，aqua在相位轉換上是在數位階段做轉換，而非類比階段。實際撥動還滿爽的，aqua在自家的轉盤用上了超多撥桿，使用起來應該很過癮。

特點
• 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 -1704K arrayed in dual mono configuration (PCM1704-K 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 XP, 7 and 8 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-K (2 dac) – sign magnitude R2R ladder DAC 24bit / 192 kHz – DFD MODE (本次試聽的版本)
– 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

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