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  1. #31
    註冊日期
    2008-06-30
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    預設

    我覺得Psycho 建議走Airport 的方案比較單純又容易得到好聲
    (除非樓主 之後有 “ㄇㄨˋ” 一堆東西的心裡準備)

    建議可以去聽聽看 Micromega Aria airdream 非常好聽
    挺令人驚訝的,跟 wm-10 有很不一樣的聲音表現

    La Rosita 可以去心曲音響聽, Micromega 可以在隔幾條街的楚培樂坊那聽
    聽完還可順道在美術館附近走走吃飯~
    去樂沐吃飯,到retro 喝杯咖啡,到勤美誠品逛逛 。
    很享受的一天

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  3. #32
    註冊日期
    2010-12-08
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    預設

    這次台中音響展我有展出 Rosita Pi 唷!


  4. #33
    註冊日期
    2010-12-08
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    引用 作者: kaijencheng 查看文章
    不好意思..想請教一下, 無線DAC 如 Rosita ...比USB DAC 容易好聲的依據跟理論為何呢?.....謝謝
    其實我覺得理論歸理論~~~實測有個基準最能信服聽眾~~~

    我常常在客人家是這樣測試的,
    由於拚比DAC的聲音是無法比較出傳輸方式所造成的聲音好壞,
    所以我都用Rosita Beta或是 Pi 的 同軸數位輸出,再去接到一台"具有同軸and USB數位輸入的DAC"

    一次用USB介面播放,一次用AirPlay播放,馬上可以聽出差異! (真正解碼都是同一台DAC)
    超低的數位底噪,絕對可以信服所有的耳朵....


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  6. #34
    註冊日期
    2010-12-08
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    http://www.larosita.fr/Rosita-2013/P..._concepts.html

    La Rosita




    Explanation About la Rosita


    La Rosita is Wireless Musical Player that connects straight to your Hi-Fi. NO MORE CABLE!

    You control your music and iTunes without moving.
    The music is stored on your computer after ripping. No data are missing, everything is there. As all the conversion from digital to analog happens it one chips, there is no jitter.


    WHAT ARE THE DIFFERENCE BETWEEN ALL ROSITA’S MODELS:

    DIGITAL NOISE FLOOR / you never miss anything anymore!
    One difference between the Rositas is the ‘’ Digital Noise Floor ’’. You need to consider it as border that signals, will never be able to cross.
    How lower is your digital noise floor, how better you will hear the details of music. La Rosita is extremely low. It brings out the micro-details that result in softness and warmth.
    A digital noise floor is not a stable line. It is constantly changing up and down like the sea level. That is why it is important to have it at the lowest level as possible. This way, more details, nuances, fineness and subtleties of the music will be available. The average CD-Player will have a digital Noise floor of -70 to -80 db. You miss 20% of the possibilities of the CD recording. The best CD-player ever produced in the world was -93dB. You still miss something. The Beta New will have -102 dB and the Pi, more than -105dB.
    With LA-ROSITA you never miss anything anymore!

    NUMBER OF CONTROL IN POWER SUPPLY
    Another difference between Rositas is the level of control of the power supply.
    The Beta New has 2, The Omega has 3 and the Pi has 4. More control of the power supply will translate in more softness, more energy, more responses. This means all the sound will pass with all the energy they really need.
    In term of music, especially on piano and violin, you will hear the attack of the musical note very sharp at it is and note softened.

    INSTANT FULL ENERGY SUPPLY (IFE®)
    A patented power supply, IFE® type (Instant Full Energy®), capable of producing unlimitedenergy without inertia. We could compare it to a car that will never have to switch gear to change speed. At any time he will have enough power to reach any speed needed effortlessly.
    Another image will be a sport man without short of breath whatever the condition or the field in which he is running. The Pi has the IFE and the Beta has a lighter version of it.

    THE PI, THE ULTIMATE VERSION.
    The Pi was made with one idea in mind: no compromise and put the price issue on the side. The PI uses not only the best components, but all components are matching with the other and chosen in matching pairs. Every single component is tested and measured one by one to find its perfect pair. Everything was build to make sure we reach the best level possible in sound reproduction ever matched before.
    In addition, a deeper work on all the output stages and a unique treatment called DFTA® (Direct Frame To Analog). This devise give the ability to the PI to adapt, fit itself to the next level, the PRE-AMPLIFIER and AMPLIFIER it is connected to. It analyzes the charge of the next devise and it put itself at the same level. In other words, it puts itself in the best condition for amplifier to work in total harmony with it.

    There are some more difference between the 3 Rosita:

    a) Beta, Omega and Pi have a digital output so that you could use it with your own DAC ( Digital to Analog Converter) if you like. Pi only, has 2 kind of digital output available, SPDIF Single ended 75 ohms, and AES/EBU 110 ohms .

    b) Pi has a XLR analog output. It is an option for the BETA and for the OMEGA.



    OTHER THING ABOUT LA-ROSITA
    La Rosita is the achievement of 8 years of research and tests; and 35 years of audio experience and music passion.

    All Rosita have no jitter. No Jitter means, the music is never tired, it come straight to your brain, you can listen for hours and hours, you will never again want to change the volume level or switch to another music.

    La Rosita has been conceived to respect the TEMPO of the music.
    When we proceed from Analogical to Digital, it was a great step forward for audio but also a step backward for the music reproduction.
    The reason for this. ALL digital devises need a time base (Oscillators) to rebuild sound from digital file. The music itself is built on time base, which is the cadency, the tempo. When you put two time bases over each other, inevitably you degrade (Lower) one of them. The one of the electrical circuits cannot be altered otherwise you take the risk that the devise will not work. So, it is the tempo of the music that will be damaged. LaRosita has succeeded to avoid this dilemma and there is no more compromise. It respects the tempo of the music. This one reason the music sound so fluid and pass with ease.


    Another advantage of la Rosita. Simple is more functional.
    Today, we now know that a clock signal will undergo more temporal strain (distortion) on a circuit path of 30 cm than an analog signal would be over 30m !
    So, the idea was to reduce the digital signal path length so that it will never be distorted. The only solution was to move from digital information to analog information without leaving a single and same processor. All the Analog Digital conversion happens in a single chips the size of a 1€ coins.
    In a traditional setting of digital reading and digital to analog conversion, the multiplication of transport and transformations that signals have to pass trough cause degradation of the musicality.
    In LA ROSITA, the information is translated from a state of raw network data to a state of musical signal in a SINGLE component!!! The incredible reduction of the path of the digital signal is essential in the preservation of the musicality and to avoid any jitter issue. In addition there are no loss of insertion (passing from components to another). Everything happens in a unique and single component, the size of a 1€ coin!)


    Similarly, as the signals (digital and analog) do not pass through long paths, they are not tainted with losses by insertion (#1) or by jitter and distortions
    (#1) At the junction of the welding there are losses. The welding of the metals together creates this problem. And different metals give different color to the music. Since all is one chips, there are no more losses by ‘’ insertion’’, you don’t have two metal mixed with a third one. You have a real electro fusion. This is a fundamental advantage. LA ROSITA is totally neutral and don’t add any color to the music. What you get is what was recorded. One reason why the Pi is the choise of some Studio Recording to play their music.

    In comparing A / B source, the more neutral and more true unit still appears to be more dull because it does not include any artifice (contrivance) but eventually, when listening the ROSITA for full music pieces, the desire to switch, to lower the volume or simply to change the CD does not exist anymore.


    To fully appreciate a Rosita, you just have to listen and only listen to music that carries emotion to be able to recognize its high musical qualities.

    There's nothing like La Rosita in its ability to capture and to relay emotion, melody, the musical flow and its fluidity. This is probably the first time that we found with a digital devise the accents of both the analog and the vinyl This because of our proprietary Algorithm for DtoA reconstruction based on Lagrange Transform and done by a very advanced DSP system.


    Once you have a ROSITA, you just enjoy the music for the music and you have the right devise to reproduce music as its was recorded








    As you can see here is our new moulded V3 module.

    (left picture) Composed of 2 multilayers circuits boards (Right picture). On the top (black) Airplay bridge original Apple® for best compatibility with iTunes® and just below, our own DSP board (green) linked to the Apple’s® bridge including our own DSP engine and our exclusive D to A Algorithm based on Lagrange transforms (Tempo®). On the same board, our original BioClock® and our IFE® ful linear power suply for all various DC voltages needed.

    All Rosita’s streamers models use this module with various levels of Algorithm based on Lagrange transforms, BioClock®, IFE® power suply and our Activ/Passiv A Class single ended output stage called DFTA® (Direct Frame To Analog). ( an Iron Hand in a Velvet Glove)

    All firmware upgrades can be done at any time.

    Hardware evolutions, are simply done by moulded module replacement!

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  8. #35
    註冊日期
    2007-07-02
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  9. #36
    註冊日期
    2013-01-07
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    預設

    電腦的USB口接DAC的確是不如同等價位的CDP的,電腦的USB口基本問題,干,硬,冷,薄,音場平面化
    我是玩耳機的,我現在是MAC MINI AMARRA+AP1+CHORD 64MK2,AP1這個界面還不錯,
    可能用Airport 或者WIFI等方法比較容易得到理想的效果,向各位大大學習

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  11. #37
    註冊日期
    2009-11-10
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    預設

    最近拿下QB9 DSD版,深深被打動。

  12. #38
    註冊日期
    2014-08-22
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    AQUA La Scala MKII 這台不錯喔~
    性價比高 20W~30W內 無可匹敵

  13. #39
    註冊日期
    2007-05-23
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    如果能解DSD的模組能快點出,那才真的無敵,目前殘念中。

    引用 作者: wen2014 查看文章
    AQUA La Scala MKII 這台不錯喔~
    性價比高 20W~30W內 無可匹敵

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