I don't think it was ignored, but that nobody who saw your question could answer it...
There hasn't been an Ono or Xono clone board in years, and I think only one member who has been following this thread has built an Ono, and I haven't seen him post in quite some time.
I recently looked at the circuit of the Ono, and it was quite similar to the Pearl II. I may be wrong, and someone else can chime in, but to me it seemed similar.
Edit: Here's the circuit I saw:
http://rstaudio.de/Xono/ono_en.html
Edit: Here's the circuit I saw:
http://rstaudio.de/Xono/ono_en.html
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another possibility is to target your question to the designer of all of them - wayne at passlabs
mlloyd1
mlloyd1
Well the Ono and Xono were not DIY projects. They were just cloned from service manuals. The Pearls are DIY and simpler to build not really a step backwards. These are less flexible than the commercial offerings in regard to loading balanced, outputs, drive capability etc. The perfomance also depends on the power supply and who is building it. A good build comes pretty close to an Xono but remember it has been discontinued for a few years and we have moved on. You can put together quite a good sounding system off of DIY if you have the time.
-) ) the pearls use passive eq, the onos use active eq.
Building is half the fun, doesn't have to be better all the time.
There's always something superior, but not at entry level, personally i don't see the point of building a $5K phono stage for a 500 dollar turntable.
(got yourself a set of Dragan's boards, right ?)
My wet dream is a B&W Nautilus with zebra stripes (but i suspect the cabinet maker will jump out of the window halfway).
Thank you very much for your reply. At least two of the Pearl Two builders had also built outstanding version of Ono/Xono. I only wished to know sonic differences between them.
Having watched high res. photos of your XP-25 I saw that you went on complementary J-fets path instead of single ended designs. I also prefer fully complementary approach by Erno Borbely.
I have just finished assembly and testing of Xono PCB which I etched myself two years ago. It is only modular Xono I have ever seen, and practical to be combined with other modules of your choice. I wish to compare it with my Borbely phono stage , I will even use the same power supply all-Fet regulators.
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Siberia
The cartridges I have tried are the Accuphase AC 2 at .17mv, Fidelity Research FR-3f at .14 mv on the highest gain setting. My current and best MC is the Sao Win Jewel at I "think" is somewhere around .40 mv but is a guess.
I might even decrease the gain a little for that one considering my Audible Illusions 3a has a healthy line stage output
Regards
David
The cartridges I have tried are the Accuphase AC 2 at .17mv, Fidelity Research FR-3f at .14 mv on the highest gain setting. My current and best MC is the Sao Win Jewel at I "think" is somewhere around .40 mv but is a guess.
I might even decrease the gain a little for that one considering my Audible Illusions 3a has a healthy line stage output
Regards
David
That is always going to be system dependent. If you have, say, 40db of gain in your preamp, or a power amp with .5v input to full output, you would find that even the lowest output cartridge would be fine.
But in reality it's going to come down to how much gain your preamp has. If you are using a buffer, you might need more gain with a really low output cart.
You should need 63dB for a 0.25mV cart with your setup or 60dB and a 0.4-0.5mV cart. Input noise under 1nVrtHz.