•  Audio Research Reference CD9SE 真空管CD唱盤/DAC 規格表

Audio Research的前一代旗艦唱盤Reference CD 8問世是2008年的事了，相隔5年終於推出新一代旗艦唱盤Reference CD 9，除了原有的CD播放，更加入了DAC功能，讓真空管愛好者也能輕鬆涉獵數位流播放的領域。

音響迷們還是會使用CD來播放音樂，但也希望擁有數位方面的用途，讓自己電腦裡的音樂檔案也可以透過Hi End音響器材播放出來，因此Audio Research將兩項功能結合在一起推出了Reference CD 9。它配載了4個數位輸入端子，有非同部USB輸入端子、AES／EBU、RCA以及Toslink，所有的輸入皆可支援最高24bit／192kHz取樣率。至於在CD讀取方面，CD 9仍使用上了Philips PRO2R的傳輸系統，這是ARC認為目前較好的CD結構。

在DAC部分，CD 9配備了Audio Research的Quad DAC技術，採用四路24位元DAC以單聲道模式運行，同時內載了雙主時鐘系統，分別為44.1／88.2／176.4採樣率，另一為48／96／192kHz採樣率，進行時基校正，並提供升頻功能。CD 9與REF SE、REF PH2SE以及REF DAC一樣，類比部分是真空管，使用了4個6H30雙三極管，維持了ARC獨有的真空管特色。

Audio Research introduced its first Reference series CD player in 2005 with the Reference CD7, then evolving into the Reference CD8. Both players received critical acclaim for their accuracy and naturalness. People still want to play their CDs, but they also want to add other digital sources such as computer audio and streaming to their music systems, so we created the Reference CD9SE CD Player/DAC. It combines the best of both, a super high-resolution compact disc player with a super high-resolution digital-to-analog converter that is stunning in its musicality.

The Reference CD9SE incorporates four digital inputs: USB 2.0HS, AES/EBU, RCA, and Toslink. All inputs handle 24 bit / 192k resolution. The Reference CD9SE retains the Philips PRO2R transport, still the best dedicated CD mechanism that is simply unsurpassed for compact disc playback. Benefitting from what we have learned in the development of the Reference DAC, the REF CD9 utilizes quad 24-bit DACs running in mono mode, with dual master oscillators; one for 44.1/88.2/176.4 sample rates, the other for 48/96/192kHz sample rates. Sample rate conversion is selectable for all inputs, allowing playback in native resolution or via upsampling, including compact disc and all inputs, including USB. Additionally, there is a selectable digital filter, with either fast or slow rolloff.

Like other Reference products, the analog section is vacuum-tube, with four 6H30 dual-triodes, and there is vacuum-tube power-supply regulation featuring a 6550WE with a 6H30. The front panel has the familiar, dimmable CD display on the left side. On the right side there are LEDs to indicate sampling rate, input selection, filter and power. In addition to the digital inputs, the back panel includes Digital Outputs (AES/EBU and BNC), single-ended RCA and balanced XLR outputs, and a 15A IEC power connector.

Sonically, the Reference CD9SE is in a new class, combining the magical musicality of tubes with remarkable transparency and aliveness. The Reference CD9SE sounds fast, with great transient speed, improved dynamics from top to bottom, much greater resolution of inner detail, with a focus and purity that is captivating. Rhythm, pace and timing are better than ever, something you must hear to appreciate. It’s time to hear your music in High Definition®.

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