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Woo Audio Amp Owner Unite - Page 2080

post #31186 of 31198
Quote:
Originally Posted by roskodan View Post
 

you are confusing kHz (sample's resolution per second) with the sample's actual data (memory) weight, kbps (kilo bits per second), of the specific format

 

actually both of you are confusing it

 

http://en.wikipedia.org/wiki/Sampling_%28signal_processing%29#Audio_sampling

 

http://en.wikipedia.org/wiki/Bit_rate#Audio

 

also neither is instantaneous, but 'per second'


Thanks for the links!

post #31187 of 31198

I'm using the WA7 with Sennheiser HD 800. I just downloaded the trial version of Audirvana Plus and it's detecting DAC as 24/96kHz. Shouldn't it be seeing 24/192kHz?

post #31188 of 31198

Wait. Maybe it's detecting the source? Hmm, no delete button here....

post #31189 of 31198

Hmm, I finally looked at the manual and the left is DAC and right is source. So, I guess it still doesn't make sense to me.

post #31190 of 31198
DAC = Digital to Analog Convertor = optical / USB / coaxial = bits of data (you can't listen to 0's and 1's)


Source = Analog Signal = Left + Right Channel (RCA/XLR cables) stereo



a vinyl record for instance is analog (drop the needle and you will get sound)
versus
a compact disc which is digital (laser will read 0's and 1's and you get no sound)
Those 0's and 1's need to be converted for you to hear sound which is why a DAC is needed...

Hope this helps...
post #31191 of 31198

So I was testing some of the 6SN7 tubes I used with my WA22. To my surprised I noticed that my Sylvania brown-bases were extremely unmatched... one had a Gm 33% more than the other! (The triodes were internally matched within each tube, though.) The odd part is I did not notice any volume imbalance between channels when listening to them. Is this because Woo amps are internally self-biasing?

post #31192 of 31198
Quote:
Originally Posted by Stereolab42 View Post
 

So I was testing some of the 6SN7 tubes I used with my WA22. To my surprised I noticed that my Sylvania brown-bases were extremely unmatched... one had a Gm 33% more than the other! (The triodes were internally matched within each tube, though.) The odd part is I did not notice any volume imbalance between channels when listening to them. Is this because Woo amps are internally self-biasing?

 

I've been told that Woo amps are self-balancing and spending extra $ on matched pairs is unnecessary. Your experience above seems to confirm that.

post #31193 of 31198
Quote:
Originally Posted by TonyNewman View Post
 

 

I've been told that Woo amps are self-balancing and spending extra $ on matched pairs is unnecessary. Your experience above seems to confirm that.

Interesting. However I did spend money for a matched pair, so even though they worked I feel ripped-off. (Vendor was tubedepot.com.) All my other 6SN7 pairs test out well.

post #31194 of 31198
Quote:
Originally Posted by Stereolab42 View Post
 
Quote:
Originally Posted by TonyNewman View Post
 

 

I've been told that Woo amps are self-balancing and spending extra $ on matched pairs is unnecessary. Your experience above seems to confirm that.

Interesting. However I did spend money for a matched pair, so even though they worked I feel ripped-off. (Vendor was tubedepot.com.) All my other 6SN7 pairs test out well.


I use http://www.mcshanedesign.net/tubes.htm

 

Trustworthy.

post #31195 of 31198
Quote:
Originally Posted by Stereolab42 View Post
 

Interesting. However I did spend money for a matched pair, so even though they worked I feel ripped-off. (Vendor was tubedepot.com.) All my other 6SN7 pairs test out well.

 

I'm trying to remember the source of the information - I think was a Q&A someone had direct with Jack Wu that was re-posted somewhere in HeadFi.

 

If anyone can confirm please let us know.

post #31196 of 31198


I managed to move things around some and got a couple inches and cable modem between phone (and charger) and WA7. Definitely helped. Only maybe once and hour I'll hear a buzz and it's much lower in amplitude. I still think the overall sound has improved, so maybe there was other noise going on, too. Or, placebo effect. The buzzing is much better though, and probably as good as I'll get with this desk arrangement.

post #31197 of 31198
Quote:
Originally Posted by TonyNewman View Post
 

 

I've been told that Woo amps are self-balancing and spending extra $ on matched pairs is unnecessary. Your experience above seems to confirm that.

 

Our amps are self biasing.  We do encourage to use matched pair tubes.

Reply
post #31198 of 31198
Quote:
Originally Posted by HiFiGuy528 View Post
 

 

Our amps are self biasing.  We do encourage to use matched pair tubes.

 

Is that because if the tubes are too far out of "match" with each other, the self-biasing circuitry will be stressed somehow, and not provide the best SQ?

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