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Thread: Are expensive phono preamps worth it?

  1. #51
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 99,005
    I'm Grant.

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    link works for me....and yes it was
    Regards,
    Grant .... ؠ ......Don't be such a big girl's blouse

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -

    Oh my god! There's nothing wrong with the bidet is there?

    “Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".

    “You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”

    "You don't have free will. You have the appearance of free will.”

    “There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”


    ***SMILE, BE HAPPY***

  2. #52
    Bigman80 Guest

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    Quote Originally Posted by struth View Post
    link works for me....and yes it was
    Oh?

    Must be a tapatalk issue.

  3. #53
    Join Date: Jan 2016

    Location: Shenfield

    Posts: 573
    I'm Slav.

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    Quote Originally Posted by 337alant View Post
    Absolutely !
    https://www.diyaudio.com/forums/grou...stage-buy.html

    I wish I had joined in this one too
    looks excellent and very simple to build

    Alan
    Not sure about this one , with no circuit diagram (one could take it of the board but it's too much hassle for DIY) and no measurement reference points it's pretty useless as one don't know if works as intended . With something like this you definitely need an oscilloscope to see what it does , at least on the output.

  4. #54
    Bigman80 Guest

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    Quote Originally Posted by mac72 View Post
    Not sure about this one , with no circuit diagram (one could take it of the board but it's too much hassle for DIY) and no measurement reference points it's pretty useless as one don't know if works as intended . With something like this you definitely need an oscilloscope to see what it does , at least on the output.
    I'm afraid not, Mac72

    There are measurement point available, which are provided to those who've bought a PCB. The Circuit diagram is not provided as it's not mine to share, as I repeatedly state in the thread.

    You've obviously not read the opening post on this and jumped to a conclusion. The wrong one.

    The PCB was designed so all you need to do is buy the parts listed on the BOM, included are part numbers so you can buy the exact ones specified. You then follow the build guide, which is incredibly simple. You then have an exact replica of the three I have built.

    I checked this approach works by doing exactly that and to see if it yields repeatable results.

    It absolutely does.

    The RIAA network was the only tweak required after the last build with the new board and that has been done. If you put the parts in this PCB that I have specified, the results are the same and the measurements are eerily close. I just mention again, I have tested this theory physically.

    I even spec the Transformer so there is no chance of error there.

    This project is a "paint by numbers" approach so that ANYONE can build a phonostage WITHOUT the need for specialist equipment. That was the whole point.

    All you need to build this board and check it's ok, is to own a soldering iron, be able to solder and own a multimeter. Both of which can be bought for under £20. If you can follow instructions well enough to bake a cake, you can build this phonostage.

  5. #55
    Join Date: Jan 2016

    Location: Shenfield

    Posts: 573
    I'm Slav.

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    I cannot see anything about reference points in the opening post , tbh i scrolled down to Gerhard's post asking about the diagram and it was it .
    Haven't realised it was yours , oops

  6. #56
    Join Date: Jan 2016

    Location: Shenfield

    Posts: 573
    I'm Slav.

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    But still if I were to build something I'd rather see how it works and what it does , we all make mistakes , parts are not repeatable , etc...

  7. #57
    Join Date: Jan 2014

    Location: london se6

    Posts: 823
    I'm AndyElectroNumpty.

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    I built my Dcb1 without looking at a circuit diagram. I wouldn't know what it is about even if i had it so made no difference at all to the out come. But that is a well trodden path with a lot of online resource out there, and here

    Sent from my SM-G950F using Tapatalk
    At the cutting edge of Numptyness!

  8. #58
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 99,005
    I'm Grant.

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    I fairly recently bought a new Phono stage, of which im very pleased with. A project phonobox ds2 usb...a bit of a mouthful
    Sounds very good, and is very easy to adjust with buttons on front. It also can play it over optical on the fly and record via usb to pc. (which works very well with a good program)
    Was a lot of money for me but I am enjoying it and love the flexability and rhe recordings you can make for the digital side are pretty good.

    Regards,
    Grant .... ؠ ......Don't be such a big girl's blouse

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -

    Oh my god! There's nothing wrong with the bidet is there?

    “Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".

    “You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”

    "You don't have free will. You have the appearance of free will.”

    “There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”


    ***SMILE, BE HAPPY***

  9. #59
    Bigman80 Guest

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    Quote Originally Posted by mac72 View Post
    I cannot see anything about reference points in the opening post , tbh i scrolled down to Gerhard's post asking about the diagram and it was it .
    Haven't realised it was yours , oops
    Oops!

    No need to mince your words just because it's mine, I'm not offended, I just wanted to explain the availability of the aforementioned information.

    I haven't made all the information available on the thread but if anyone has had a question about Gain, Loading, measurement points, alternative parts etc, I have all of that and will share it with anyone who's bought a PCB. It really is a very simple project and one that in personal research has been very reliable. If it wasn't, I'd never have offered them out because I don't make anything on the PCBs. It was a not for profit project. I don't own the circuit, I didn't design it and would never suggest I have the ability to do so. The plan was to see if any electro-numpty, like me, with a soldering iron and will power, could build their own phonostage. I can tell you from first hand experience that they can IF they do exactly what the BOM and build guide says.

    No fancy equipment is required and that was the goal! It's like a jigsaw puzzle and once you put it together, there should be no variation between any other Bigbottle phonostage.

    I knew there's be resistance to the project because I won't share the circuit diagram but you don't need it, not for this project anyway.

    O

  10. #60
    Join Date: Aug 2012

    Location: Hartlepool UK

    Posts: 1,640
    I'm Alan.

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    Quote Originally Posted by Bigman80 View Post
    Link isn't working mate, is that to my Bigbottle phonostage?

    If so, it's not too late to join in!

    If not, I'd like to see who else had the same idea lol
    Sorry yes it was your bigbottle and yes I will take a board or is it 2 boards ? PM me
    I downloaded a copy of the BOM

    Alan
    Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, Micro Sieki MA505 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20, Revox A77, B77, PR99, TEAC X1000 & 3440, Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Avondale NCC300 Mono Block, Speakers Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500

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