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catman

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Everything posted by catman

  1. Do you care what your phono stage looks like? G'day all, this is an interesting one as I've always felt like appearance 'can' influence listening perceptions yet maybe it doesn't! I love the sound of my Rothwell 'Simplex' but I also love the way that it looks even though some have criticised its spartan and 'dated' looks. Regardless, I love that phono stage in every way! Any comments? Regards, Felix.
  2. Sound quality and stylus wear. G'day all, a question of interest to me. When a stylus starts to wear, how is the playback sound quality adversely affected? Regards, Felix.
  3. G'day all, ah memories! It was around that time that I used to say 'Shure cartridges are the best'. Great memories! Regards, Felix.
  4. G'day all, wow what a sad collection of recollections! I guess that it says a lot about the sadder and more horrible aspects of human nature! Thankfully I've never really had things happen to me like this beyond perhaps visits by the police, although that was bad enough! Regards, Felix.
  5. G'day mate I've had the Mani for a few years now and I think that that sonic change noted has taken a few months more or less. Regards, Felix.
  6. 'Long term' phono preamp break in! This is an interesting one. When I first bought my Schiit Mani phono stage, I liked it and I thought that I thought that it sounded fast and 'tight', yet over time its sound has changed, loosening up and smoothed out and this has taken an extended an extended period of time. Interesting. Regards, Felix.
  7. Do vinyl records have an inherent 'sound' or do phono stages have a 'sound'? G'day all, I was thinking about this as I listened to a record last night and I wondered! I certainly do have phono stages that have their own unique 'sound', so is the record or the phono stage that contributes to the 'sound' of records....or both? Any thoughts or comments on this. Regards, Felix.
  8. G'day all, has anyone seen and read this new article on the Elliott Sound Products website: https://sound-au.com/articles/jfet-design.htm It is excellent and well worth reading! Regards, Felix.
  9. G'day mate, yes the LM4562 is a very fine dual op amp! Regards, Felix.
  10. G'day mate, this is an interesting one as I think that the NE5532 is still a very good dual op amp and whilst I have a high regard for the OPA2134 they are actually slightly noisier, being FET input. Regards, Felix.
  11. G'day all, an interesting sidenote to this whole thing. On my DIY P97 line stereo preamp I've replaced the third NE5532 with an OPA2134 and the overall sound quality has improved to my ears anyway. Interesting! Regards, Felix.
  12. What is 'colouration' and why is it sometimes most agreeable to the ear? G'day all, I could be opening a large Pandora's Box with this thread in terms of things that sound agreeable yet possibly 'inaccurate! I guess that in general terms analog and audio electronics should be designed and built with linearity and minimal distortion in mind, yet I have one of two bits of gear that I really like the sound of because they clearly have either euphonic and or sonically biased sound, but to my ears sound sound good because of it! I have two sets of stereo headphones that
  13. A possibly stupid question! G'day all, for those of us who have quite a few phono stages (like me), what is it about your favourite phono stage that you like or love most? Regards, Felix.
  14. G'day all, as a bit of an antidote to these crazy times, I've been listening to a couple of my lesser heard albums of late and this morning it was an old mono vinyl copy of the Beatles 1966 'Revolver' album I have. I particularly like the mono mix of this album because most of the tracks are mixed somewhat differently to the standard stereo issue. Certainly it was a 'transitional' album with interesting new sounds from The Beatles, showing the mark of the 'acid' experience, especially on John Lennon's songwriting. A pretty good album actually. Regards, Felix.
  15. G'day all, this has been an interesting thread, so thank you. On electrolytic capacitors I find that I used to be very anti electrolytic capacitors, and yes they do have some limitations and they do need to be configured correctly in a circuit, but having said that a couple of my best sounding phono stages actually have electrolytic capacitors in signal coupling parts of the circuit. Interesting indeed! Regards, Felix.
  16. G'day all, I have long been a long time fan of 'hi fi' AM reception and quite recently our local ABC AM outlet from Townsville (630 KHz) upgraded their mast, and I've been playing around with my own wideband 'high fidelity' AM detectors. I regard my 'voltage doubler' AM detector as my best with a clarity and a low noise and distortion audio profile that has to be heard to be believed. I have others that come pretty close, but my voltage doubler AM detector is simply the best in my opinion. It sounds truly 'hi fi' in mono, of course. Regards, Felix (vk4fuq).
  17. G'day mate, I've built that Jaycar kit with no issues at all. Interesting! I think that the LM4562 is an incredibly impressive dual audio op amp. Try it out! Regards, Felix.
  18. G'day all, I guess that this sounds suspiciously like the subject of 'op amp rolling, but actually it isn't. As much as I think that op amps do have a 'sound', in recent days I've been revisiting the LM4562 and sonically wise, to my ears it doesn't really have that 'typical' op amp signature, it just sounds clean, quiet and with particularly good and strong bass. Curiously enough it seems to sound its best in combination with the OPA2134. In some respects I think of the LM4562 as a somewhat upgraded NE5532. I have used the OPA2134 as the first gain stage in a number of high qua
  19. The sound of active phono preamp circuitry! G'day all, this is something that I've often mused about, but continues to baffle me. I must concede though that op amps have a unique sound, valves have a unique sound and even discrete transistor circuitry has a 'sound'! I guess that in the end it comes down to the particular 'sound' that one likes! Even my beloved DIY ESP P06 has a distinctly audible 'op amp' sonic signature that occasionally sounds 'grating' despite being a superb phono stage is practically all other respects. For that reason, I love the 'sound' of my
  20. DIY phono stages with extraordinarily good channel separation! G'day all, to be honest I never thought that there was really much in that but of late one of my DIY phono stages is making me rethink this. I used to think that this was mainly determined by component channel matching, but now I'm not so sure! I've been listening to my Muffsy phono stage quite a bit of late, and listening to a lot of quite familiar stereo records with it, it is apparent that the stereo imaging appears to be better and more defined than most of my DIY and other phono stages. Why I wonde
  21. G'day all, most of my DIY audio preamps are powered by DIY power supplies with many using the ESP P05 variety. The P05's use two 10 ohm resistors for filtering purposes something that works very well. However I have occasionally shorted those power supplies resulting in 'smoked' 10 ohm resistors although still measuring a nominal 10 ohms. My question is whether these resistors can become damaged in this way, and become noisy? I ask this because today I replaced several of these heat damaged and discoloured resistors and to my ears playback noise has markedly reduced. Is this possible? R
  22. If.... G'day all, if you could only have one phono stage and assuming your current playback gear, what would it be? Regards, Felix.
  23. Phono stage rotation. G'day all, I've been rotating my best phono stages of late in here and in the end although they are all excellent I still think that my DIY ESP P06 is as good as any of the others in any respect! That is actually a pretty good feeling that a DIY effort can essentially match anything else! By the way....Merry Christmas everyone! Regards, Felix.
  24. The interesting things you hear when listening on headphones! G'day all, an interesting listening session last night! I was listening with my newsish Sennheiser HD300 headphones whilst switching between phono preamps. Firstly with my Rothwell Simplex and then with my DIY ESP P06. The jury is still out regarding my new Sennheiser HD300 as I find the deep bass slightly lacking, yet overall quite satisfying but I was a bit amazed at the little things that I was hearing with the different phono stages. Although I love the Simplex through speakers, I preferred the P06 th
  25. G'day mate, there is a circuit diagram on the website somewhere. Regards, Felix.
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