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  1. #51
    Junior Member
    Join Date
    Nov 2020
    Location
    Hong Kong
    Posts
    26

    Re: Handmade Passive Preamplifier

    Quote Originally Posted by Speedskater View Post
    Your unit has qualities that are almost opposite of the qualities desired by audiophiles that chose passive pre-amps.
    Those audiophiles chose passive pre-amps because they feel that an active stage might change the signal in some small way.
    Your unit intentionally changes the signal.
    Why not call it "Not a Passive Pre-amp" ?
    Yes because this is a new concept and that's why you feel some kind of opposite qualities. This unit really changes the signal, by passive components, like what an active stage does as usual. In fact, there is also an 1X gain option in the unit which could attain signal changing in a small way, I think that's what you and other music lovers look for. Only passive components are used so it definitely called "a Passive Pre-amp" but not a "Not a Passive Pre-amp".

  2. #52
    Senior Member
    Join Date
    Nov 2015
    Location
    Nipomo, CA
    Posts
    4,512

    Re: Handmade Passive Preamplifier

    Quote Originally Posted by AudioLover525 View Post
    I agree that this forum is a place with many good people, but you might not be one of them.
    Wow from someone who has 25 posts all in this one thread where you are trying to gain support for a product you are trying to push, versus someone who has over 4500 posts and has been involved in this forums for years... yea that makes sense to me...

    Don't bother responding...
    Amps: Hattor "The Big" w/AMRG Trans, Hattor Tube Active Stage, Bel Canto REF500S, McIntosh MC754
    Vinyl: Rega RP8 w/Rega Neo PSU, Rega Ania Pro, Technics SL-1500C, Moon by SimAudio NEO 310LP, Record Doctor VI
    Digital: Falcon Northwest PC Server, T+A DAC 8 DSD, W4S Recovery, Roon & HQPlayer, Microsoft Surface Pro 6, Astell & Kern SE200
    Transducers: Magnepan MG .7's w/Magna Riser Stands, Rythmik L12's (x2), Abyss Diana Phi's
    Other: McIntosh MR7083, Oppo BDP105, AudioQuest Niagara 1000, Astell & Kern AK240 (for sale)

  3. #53
    Senior Member
    Join Date
    May 2017
    Location
    Cleveland, Ohio, USA
    Posts
    398

    Re: Handmade Passive Preamplifier

    Secondly, when we input 0.2V would output 2V(10 times gain, +20dB). That's why I called it an amplifier.

    I doubt that there are many high fidelity products that have a fixed output of only 0.2V.
    And other portable products with a 0.2V fixed output, won't have a low enough output impedance to be suitable for transformer voltage amplification.

  4. #54
    Junior Member
    Join Date
    Nov 2020
    Location
    Hong Kong
    Posts
    26

    Re: Handmade Passive Preamplifier

    Quote Originally Posted by Speedskater View Post
    Secondly, when we input 0.2V would output 2V(10 times gain, +20dB). That's why I called it an amplifier.

    I doubt that there are many high fidelity products that have a fixed output of only 0.2V.
    And other portable products with a 0.2V fixed output, won't have a low enough output impedance to be suitable for transformer voltage amplification.
    I understand that there are few products have a low fixed output. The number is in fact an example which just to explain the ratio of amplifying as 10 times. I could tell when we input 5V then output 50V(still 10 times gain, +20dB), just a numerical example.

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Handmade Passive Preamplifier

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