Hi
I see the PF5102 are no longer available, are there any alternatives?
is there any newer bom;
I see the PF5102 are no longer available, are there any alternatives?
is there any newer bom;
A friend and I have the same dacs, he has it with reflektor-D power supplies and I have it with Ubib. We both like it better with ubib, although the difference is minimal.
The UBiB can be more detailed & more dinamic but for digital isn't what I'm aiming for, Reflektor-D more mids & bass without loss of highs and a lot of more relaxed sound, UBiB sounds more compressed & Reflektor-D more open, airy & natural.
They are designed on different output error reaction principles and much different open loop gain levels so to give you guys options
With Ubib the treble is cleaner and more defined. All other sonic aspects sound the same.
We spent many hours testing. The difference is small, but the treble is more analog with Ubib.
In my humble opinion, Ubib is a simpler circuit and much more effective against AF noise. for me it is a big step forward and improved version of reflector-D.
It is clear that both designs are "brilliant" circuits, they are great genius, thank you Mr. Salas!
We spent many hours testing. The difference is small, but the treble is more analog with Ubib.
In my humble opinion, Ubib is a simpler circuit and much more effective against AF noise. for me it is a big step forward and improved version of reflector-D.
It is clear that both designs are "brilliant" circuits, they are great genius, thank you Mr. Salas!
Je, je, no is only my experience and my personal opinion.
I always like to say that high-end audio is a matter of personal taste! Like haute cuisine, there are differents many winning possibilities... All opinions are respectable.
I would like to say one thing, I am an electronic engineer by profession, reflektor-D and Ubib are electronic geniuses, because they are simple circuits that offer objetives or performance that is difficult and complex to achieve, normally difficult objectives require complex and difficult circuits.
I always like to say that high-end audio is a matter of personal taste! Like haute cuisine, there are differents many winning possibilities... All opinions are respectable.
I would like to say one thing, I am an electronic engineer by profession, reflektor-D and Ubib are electronic geniuses, because they are simple circuits that offer objetives or performance that is difficult and complex to achieve, normally difficult objectives require complex and difficult circuits.
Mr. Merlin, the best of all is that if you like reflektor-D better you can use it without problems instead of Ubib.
My opinion doesn't matter, yours is more important to you.
My opinion doesn't matter, yours is more important to you.
Hi Salas.
I bought some PF5102 from eBay.
Are they possibly fake?
https://www.ebay.com/str/miantaxia0...=3418065&ssuid=&widget_ver=artemis&media=COPY
I bought some PF5102 from eBay.
Are they possibly fake?
https://www.ebay.com/str/miantaxia0...=3418065&ssuid=&widget_ver=artemis&media=COPY
Attachments
Hi, its letters print and leg stems look legit. You can't meaningfully measure a JFET in an hfe tester, that's only for bipolar transistors.
@tamra
Measuring JFET Idss is a kinda more involved process. You may look it up in many threads.
If you're just looking to match you can alternatively short gate and source pins, then measure Ohms across drain to source. That indicates Rds which is inversely analogous to Idss. The fewer the Ohms the more the mA in other words. If Rds matches between two or more samples their Idss usually matches too.
Measuring JFET Idss is a kinda more involved process. You may look it up in many threads.
If you're just looking to match you can alternatively short gate and source pins, then measure Ohms across drain to source. That indicates Rds which is inversely analogous to Idss. The fewer the Ohms the more the mA in other words. If Rds matches between two or more samples their Idss usually matches too.