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Valab 4395 Platinum 24bit 192k Hi-Bit Re-data DAC USB
Oct 2, 2009 at 11:15 PM Post #17 of 72
glad i read this thread.
wont be buying one of these any time soon.
 
Oct 3, 2009 at 7:33 AM Post #18 of 72
Quote:

Originally Posted by joe_cool /img/forum/go_quote.gif
Sadly, anyone that touts the "natural" superiority of NOS DACs can't simply turn around and claim their new product with 128x oversampling "sound quite similiar to nos dac, natual, analog and faithful".


What does this mean exactly?
 
Oct 3, 2009 at 12:27 PM Post #19 of 72
I don't know the exact meaning of this phrase but there were some critics on the NOS DAC (without oversampling) with modern recordings (loudness pushed up). The elder 8 x TDA-1543 seemed there to have some trouble distorting sometimes. I suppose it depended, at least on my NOS DAC of the previous series, on the lack of buffering the analogue output section.
Valab 4395 oversampling to 24bit 192k will solve this problem but still the output will be balanced and neutral as the not oversampling DAC. I suppose Valab meant this.
On similar DACs (using the same AK495 converter) as the korean/american Stello DA100 or DA220MkII this gear was described having an excellent resolution (Soundstage 12/06) or well balanced that can well compete with Accuphase DP400 (Suono 06/09) that aren't exactly cheap as Valab 4395.
This on the papers I'm really curious to hear how Valab 4395 will sound. Now this DAC is on the road to me.
The USB input is still limited to native 16/44.1k (Microsoft) but valab wrote me they're actually working for bypassing this operative limitation. The PCI audio interfaces (ASIO, WDM, GSIF 2 and Core Audio drivers) have solved this problem connecting directly at 24bit 192kHZ. The upgrade will be possible changing easily only the USB card inside the 4395.
 
Oct 4, 2009 at 4:25 PM Post #20 of 72
What is this?
byguhmkkgrhgohcmejlllsb.jpg
 
Oct 5, 2009 at 7:27 AM Post #24 of 72
yes, it seems the fuseholder indeed!
 
Oct 5, 2009 at 9:23 AM Post #26 of 72
Quote:

Originally Posted by gevorg /img/forum/go_quote.gif
Valab entered a whole new "territory" with this $500 DAC. Much more interesting competitors at this price range like DacMagic and DAC-19MK3.


Do you know if these DACs have the usb connection directly at 24 bit/96-192kHz (bypassing microsoft native drivers)?
 
Oct 5, 2009 at 6:05 PM Post #27 of 72
Quote:

Originally Posted by Historicus /img/forum/go_quote.gif
Do you know if these DACs have the usb connection directly at 24 bit/96-192kHz (bypassing microsoft native drivers)?


Both of them are limited to 16/44 at USB input. High resolution support over USB is an important feature for me too, but I wouldn't use it as a deciding factors between DACs. A good 16/44 USB DAC can easily sound better than a decent 24/96 USB DAC (and vise-versa).
 
Oct 7, 2009 at 3:43 PM Post #28 of 72
Quote:

Originally Posted by gevorg /img/forum/go_quote.gif
Both of them are limited to 16/44 at USB input. High resolution support over USB is an important feature for me too, but I wouldn't use it as a deciding factors between DACs. A good 16/44 USB DAC can easily sound better than a decent 24/96 USB DAC (and vise-versa).


I have read an impressive report on Sterophile (10/2009) about Ayre Acoustics QB-9 USB DAC that uses a high precision asynchronous clock (unsynchronised with the clock of the computer). Usually DAC clocks run at fixed frequency master clock and a computer cannot mantain perfect timing of data packets sends to a DAC by a USB port.
 
Oct 9, 2009 at 10:31 PM Post #29 of 72
A question
This DAC uses the Texas Instruments dir9001 and it can only get 96kHz.
How this akm valab can go to 192khz ?
Someone can explain?


From texas instruments:
The DIR9001 is a digital audio interface receiver that can receive a 28-kHz to 108-kHz sampling-
· Low-Jitter Recovered System Clock: 50 ps frequency, 24-bit-data-word, biphase-encoded signal.
 
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