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DNA Stratus 2A3 amplifier - first impressions - Page 61

post #901 of 2161

To be fair Def, you did not add... 'The Stratus is not one of them'.  So the 'read between the lines' reader would assume you are including the Stratus in your statement.

post #902 of 2161

    Quote:

Originally Posted by DefQon View Post

True true. Just to add I wasn't exactly saying that the Stratus was not a balanced amp, just adding on what preproman was saying and what he meant was that you can't just look at a headphone amp with an XLR and say it is fore sure a balanced amplifier.

 

Btw what cables are those you're using for your K1k. (Full picture shot with the amp :D)

 

 

 

Quote:
Originally Posted by Solude View Post

To be fair Def, you did not add... 'The Stratus is not one of them'.  So the 'read between the lines' reader would assume you are including the Stratus in your statement.

post #903 of 2161

Time moves forward... correcting yourself after being called on it isn't the same as being correct the first time around :P  Even the retraction doesn't flat out say the Stratus is balanced only that you aren't 'exactly' saying it isn't.  Which is to say you are still implying it might be single ended ;)

post #904 of 2161
Quote:
Originally Posted by Solude View Post

Time moves forward... correcting yourself after being called on it isn't the same as being correct the first time around :P  Even the retraction doesn't flat out say the Stratus is balanced only that you aren't 'exactly' saying it isn't.  Which is to say you are still implying it might be single ended ;)

 

I didn't correct anything, look at the times I edited that post as I didn't make sense halfway what I was making a response to fej, way before Donald North's post which should've been prepomans post quoted not mine. I wasn't even talking about that Stratus I was just re-interpreting what Preproman was trying to say which around his post, there was confusion as to what he was saying and I simply just re-worded him saying, you can't always look at an amplifier be it ss or tube with an XLR and come to the conclusion that it is automatically a balanced amplifier, which is 101% true. Some amp's have a 4pin XLR for convenience, some run on actual balanced operations. Whether or not the Stratus is truly balanced I don't know I wasn't even talking about the Stratus and this concludes that you and DN mistook my post for what someone else was saying.

 

EDIT: Actually just going back one page and looking at the post I made and the timestamps of the post, I did even edit that post I quoted above, DN's post was almost exactly 3 hours after mine.


Edited by DefQon - 5/23/13 at 6:20am
post #905 of 2161

Okay now that that is all cleared up...  basshead.gif

 

Going back to the topic at hand, I go back and forth between the SE and the BAL outputs for my HD800s and have to say that there are times when I prefer the SE.  There is an equally beguiling misconception out there that balanced and/or differential outputs are always better than single-ended outputs.  I do not think this is the case.  It is not the case with my 2-channel speaker amp and it's a toss-up on the Stratus - largely dependent on the music source.  I find it broadens the soundstage a smidge and there are many times when a more intimate presentation is better.  I do not detect any difference in resolution, which makes sense given they are tapped from the same OPTs...

post #906 of 2161

The theoretical advantages of balanced drive don't really apply to transformer coupled amps since it's not a doubling of parts/specs but a change in ground reference.

post #907 of 2161

Yes, nice diversion and thanks for all that, but now that it is OVER. Just wanted to post that today I put an EML 5U4G rectifier in my Stratus. So now I'm running the EML rectifier along with Sophia Electric Princess 2A3's. Initial impressions are that the amp has a lot more balls now. Yes,'it's probably the placebo effect, but I don't know! ??? Sounds great, less filling. It's like frosted flakes "They're more than good, they're GREAT"!!!

post #908 of 2161

There is an argument that transformer balanced drive separates the left and right signal currents into/out from the headphones, whereas as single ended share a common ground. This is similar to the argument for bi-wiring loudspeakers.

Quote:
Originally Posted by Solude View Post

The theoretical advantages of balanced drive don't really apply to transformer coupled amps since it's not a doubling of parts/specs but a change in ground reference.

post #909 of 2161

True, but no doubling of slew rates, voltage, etc.  So it shouldn't sound too different.  Where as something like a BHA-1, according to owners, is so slow single ended, that balanced drive actually turns it from an ok amp to a good one.


Edited by Solude - 5/24/13 at 3:13am
post #910 of 2161
Quote:
Originally Posted by Frank I View Post

Sounds good.  I am also thinking about a 300B amp for speakers 

The 300B is pretty "polite".  I have such an amp, and I like it very much.  With 9W out, I can use my LS3/5As which I love dearly.  But I prefer the 45 direct coupled monos I have.  True, I had to get a more sensitive set of speakers.  As easy to drive as LS3/5As are to drive, their high, flat electrical load curve isn't enough to overcome the 83dB sensitivity.  So, I bought a pair of Tonian Labs speakers, which work well at around 97dB sensitivity.  I prefer the clarity and tone of the 45 (matter of preference) and the deeper, tighter bass than the 300B.  I am using a deHavilland UV-3 preamp and having a custom 26 preamp built for me.

post #911 of 2161

Oh, I forgot: my Stratus is due in early July.  

post #912 of 2161

 I have never heard the 45 tube but I have heard many 300B amps.

post #913 of 2161

The 45 is a Tesla while the 300B is a Lincoln.

So that makes the 2A3 a.... ??

post #914 of 2161

Stay away from double plate 2A3s and it is  great tube.  Tesla vs. Lincoln?

post #915 of 2161
Wait what do you mean stay away from the "double plate 2A3s?" Which brand? What kind of double plate?
And the car thing is a metaphor. American cars.
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