prot
1000+ Head-Fier
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Hi,
Where can I download this driver ?
Regards
The link was posted a few times in this thread .. just search "chodi"
Hi,
Where can I download this driver ?
Regards
No drivers issues yet - but can be a bit tricky to install (remove all previous ASIO installs helps)
You are dead on about the EI vs toroidal for power line nose suppression. My Bada uses the an R-core for the preamp section for this reason - and separate massive dual toroidals to feed the output devices (they can deliver greater current on demand)
PS Just noticed Audio-gd offers an R-core trans upgrade for their DI2014 - got to love that company!
Hi and thanks for the very interesting advice.
I have made a very simple test with a line preamp prototype powered first by a toroidal and then by a EI and any other thing unchanged in the circuit.
Switching on the lights of the room sent a loud pop in the speakers with the toroidal and much much less with the EI.
I guess this is the evidence of better isolation from mains spikes and so on with the EI type.
But i see toroidals everywhere ... so maybe i am wrong.
Moreover i am not so sure that a well executed external PS would be so detrimental for the unit sound.
The place left empty by taking out the transformer could be filled with additional caps and thus creating a big filter and reservoir.
The umbilical from the external transformer to the unit could be shielded to avoid any antenna effect.
Have i said that i do not like toroidal with digital ?
Thanks again. Kind regards, gino
P.S. of course i have both the old U10 and U12 and like them quite a lot.
Hi,
Where can I download this driver ?
Regards
And external PS would be a pretty cool mod.
How do you compare the U10 to the U12?
I'm not using U12 for headphone, and my system is
Computer(i.e PC.) ---> U12 ---> Cullen Stage 4 PS Audio DLIII ---> Thorens ITA2000 ---> HGP Ronda Speaker
or
McIntosh MC275 MK I
or
Marantz 9 reissue
The additional of U12 has obviously improved the layer of the sound stage for my system.
Hi just to say that IMHO this is the most telling evidence of digital done rightly.
The bad digital is hopelessly "flat", bidimensional ...
Thanks for the advice.
Kind regards, gino
Hi yes i think that PS can make a difference. Since long time one of the standard mod in cd player was better PS for the clock and the dac circuits (i think they have used even batteries to give low noise and isolation from mains).
Regarding the comparison i dont hear big differences in my poorly resolving system with old Tannoy speakers. If i had to buy one i would buy the U12 of course.
I can guess the U12 is the better unit. Nowadays i am in the middle of some experiments and i am focusing different digital source solutions.
Just for fun i have even tried a cheap chinese Android media player running Android 4.4 and uploaded Usb Audio Player Pro.
It works with U12 very nicely and the sound is very convincing ... unbelievable.
The media player cost around 100 USD (i intend to use as a AV streamer mostly).
I have not been able to hear substantial differences between this media player driving the U12 and a much better pc running the U10.
I read with the greatest interest the reviews here because good headphones based systems could be so much more revealing than an average stereo system.
Headphones are like a stethoscope.
I am experimenting for now.
Thanks again, gino
Replacing TCXO with OCXO will be a hell of a job to implement, with a high quality external powersupply (which is VERY important) which WILL receive lots of emi/rfi (which we DON'T want). I wouldn't be too surprised if SQ even degrades with that kind of mod,,,,
I haven't received my U12 yet, but from my experience I agree with you.
I was comparing the sound quality of my LCD-X's from my various amps and DACs, including the Xonar Essence STX sound card.
The sound card is considered excellent value for money with excellent measurements and a very high quality DAC chip.
The sound quality was excellent in tonality, but in terms of sound stage it was very bi-dimensional - no depth whatsoever, only width.
Most of audiophiles state the professionals do not have ears. Professionals state that audiophiles do not have brain.
If replacing TCXO with OCXO is not a simple straight away job, we might consider replacing U12' TCXO with Rubidium clock, it is because rubidium only got 0.00001ppm.
I've gather some informations as follows:
Rubidium atomic clock dedicated power supply board cost around RMB100 each (i.e. excluding postage.),
The upper deck is the rubidium clock; and the lower deck is the dedicated power supply board,
I've seen second hand rubidium clock is available on ebay and cost around US$215 each (i.e. excluding postage.).
With kind regards,
Thanks, do you know where the fuse sits?
If replacing TCXO with OCXO is not a simple straight away job, we might consider replacing U12' TCXO with Rubidium clock, it is because rubidium only got 0.00001ppm.
I've gather some informations as follows:
Rubidium atomic clock dedicated power supply board cost around RMB100 each (i.e. excluding postage.),
The upper deck is the rubidium clock; and the lower deck is the dedicated power supply board,
I've seen second hand rubidium clock is available on ebay and cost around US$215 each (i.e. excluding postage.).
With kind regards,