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Class A headphone amplifier

liseczq 14790 129
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  • yogi009
    Level 43  
    Olkus wrote:
    But I do not recommend buying them.


    I acquired them for these comparisons on purpose :-)
  • Olkus
    Level 28  
    romarcin wrote:
    Olkus wrote:
    now Jamicon belongs to Yageo
    according to Wikipedia, Yageo and KEMET are one corporation, Jamicon is not mentioned at all https://en.wikipedia.org/wiki/Yageo


    Wikipedia does not contain everything ;)

    Greetings,
    AND.

    Added after 50 [seconds]:

    yogi009 wrote:
    Olkus wrote:
    But I do not recommend buying them.


    I acquired them for these comparisons on purpose :-)


    It's a bad competition for Nichicon, a one-hit knockout :)

    Greetings,
    AND.
  • liseczq
    Level 21  
    yogi009 wrote:
    liseczq wrote:
    Looking at the new one, the OPA is practically weaker than the LME in everything.


    Because it is. I did comparisons on the dual OPA and the entire LME series. These are good op amps, but OPA2134 has long been referred to in the West as a good entry-level opamp for audio applications. Now you should probably take e.g. LME49860 (or the neighboring models) and the LME49600 buffer at the output.


    I have an LME49860 at home, and my colleague "FIMEK" claims that the OPA134 has almost cosmic parameters, it is dedicated to headphones and it is much better to use it as a headphone amplifier.

    Please see the first page of the topic. There is a detailed description of my amplifier and the elements used in it.
  • yogi009
    Level 43  
    liseczq wrote:
    I have LME49860 at home, and my colleague "FIMEK" claims that OPA134 has almost cosmic parameters


    Well, now it's clear.
  • Fimek
    Level 15  
    liseczq wrote:
    yogi009 wrote:
    liseczq wrote:
    Looking at the new one, the OPA is practically weaker than the LME in everything.


    Because it is. I did comparisons on the dual OPA and the entire LME series. These are good op amps, but OPA2134 has long been referred to in the West as a good entry-level opamp for audio applications. Now you should probably take e.g. LME49860 (or the neighboring models) and the LME49600 buffer at the output.


    I have an LME49860 at home, and my colleague "FIMEK" claims that the OPA134 has almost cosmic parameters, it is dedicated to headphones and it is much better to use it as a headphone amplifier.

    Invite the topic page. There is a detailed description of my amplifier and the elements used in it.


    OK, my mistake, I fixated on the presented diagram, where there was NE ... and not LME ... Now it remains for me to ask what these distortions are after equipping the opamp with the power stage? You write that small, which is probably true, but what?
  • liseczq
    Level 21  
    Fimek wrote:
    liseczq wrote:
    yogi009 wrote:
    liseczq wrote:
    Looking at the new one, the OPA is practically weaker than the LME in everything.


    Because it is. I did comparisons on the dual OPA and the entire LME series. These are good op amps, but OPA2134 has long been referred to in the West as a good entry-level opamp for audio applications. Now you should probably take e.g. LME49860 (or the neighboring models) and the LME49600 buffer at the output.


    I have an LME49860 at home, and my colleague "FIMEK" claims that the OPA134 has almost cosmic parameters, it is dedicated to headphones and it is much better to use it as a headphone amplifier.

    Invite the topic page. There is a detailed description of my amplifier and the elements used in it.


    OK, my mistake, I fixated on the presented diagram, where there was NE ... and not LME ... Now it remains for me to ask what these distortions are after equipping the opamp with the power stage? You write that small, which is probably true, but what?


    I will connect the oscilloscope during Christmas and we will measure.
  • romarcin
    Level 17  
    liseczq wrote:
    I will connect the oscilloscope during Christmas and we will measure.
    the oscilloscope shows the distortions when they are single percentages, only very good sound card and e.g. ARTA
  • liseczq
    Level 21  
    It is a pity that many of the readers do not read the text, but go the easy way and look at the photos.

    I am waiting as soon as someone asks where I live, because in the diagram from 1982 I posted it says that the network has 220V instead of 230V