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DNA Stratus 2A3 amplifier - first impressions - Page 77

post #1141 of 2152
Quote:
Originally Posted by Eee Pee View Post
 

I procrastinated too dang long!  :mad:

 

Still love my Sonett.  Hence my procrastinate.

 

I totally hear ya! my Sonett is still in daily use! It is such a good amp, I bet the Stratus will also be a very long love affair!

post #1142 of 2152

Agree.  He's an honest guy.  He may not be that knowledgeable, that's all.

post #1143 of 2152
Quote:
Originally Posted by Donald North View Post
 

The price increase is accompanied with newly developed choke-filtered filament supplies for the 2A3s, which provide an even blacker background along with reduced line noise and heat.

 

Same supplies? 

post #1144 of 2152
Quote:
Originally Posted by Donald North View Post
 

 

Hi Bud, yes earlier amplifiers can be upgraded but would need to be returned to me to do the work. The modification is rather comprehensive and requires replacing the big power transformer on top with the new version which has different secondary winding voltages, carefully drilling the chassis and installing the 2 new chokes, and replacing the 2A3 filament boards with the new versions. Price is $400.

 

Donald, no need to reply to my question about the supplies.

post #1145 of 2152
Hi guys, need a bit of help here from those with experience in these 2 or 3 tubes... Based on what I have read so far, I am considering getting either the Sophia princess or the Shuguang natural sound 2a3 tube for HD800. It seems like the Sophia princess is able to produce a fuller and liquid midrange which bores well for HD800, but the Natural sound shuguang has the upper hand in terms of clarity and extended bass and treble. How about the presentation? I have read that the EML 2A3 is quite forward and more in your face, while the Sophia Princess puts you in 4-12 rows, how about the shuguang natural sound?

By the way, I will be upgrading to the EML 5U4G rectifier as well.
post #1146 of 2152

I guess the Stratus is here to stay.  I just sent my SinglePower MPX3 Slam SE to the US.  In the time I owned the amp, I never heard anything better at shows/meets, until I met the Stratus, and even the Stratus fails to match some of the sonic characteristics of the MPX3, but is certainly a better amp over all and much more versatile as far as headphones are concerned.  In almost 6 years of constant playing, I never had a problem.

 

Onward and upward.

post #1147 of 2152
rolleyes.gif
post #1148 of 2152
Has anyone compared an ECP L-2 to the Stratus, in particular with the HD800?
post #1149 of 2152

Has Tari (RH) heard the Stratus yet?

 

-Daniel

post #1150 of 2152
Quote:
Originally Posted by froger View Post

Hi guys, need a bit of help here from those with experience in these 2 or 3 tubes... Based on what I have read so far, I am considering getting either the Sophia princess or the Shuguang natural sound 2a3 tube for HD800. It seems like the Sophia princess is able to produce a fuller and liquid midrange which bores well for HD800, but the Natural sound shuguang has the upper hand in terms of clarity and extended bass and treble. How about the presentation? I have read that the EML 2A3 is quite forward and more in your face, while the Sophia Princess puts you in 4-12 rows, how about the shuguang natural sound?

By the way, I will be upgrading to the EML 5U4G rectifier as well.

Everything's about right except I find the 2A3C-T's low end not very extended. It's more mid-to-top heavy.
post #1151 of 2152

No.  Definitely on my list though.  Lately I've been stalking Donald's old posts on the SET asylum and it has renewed my desire to hear some uber-expensive audio note UK amps as well as Donald's own 2A3 amp.  And then maybe try the Sequence and its ridiculous crossover.  And get matching blue 2A3 speaker monoblocks.  And then paint my listening room in the same shade. 

 

By the way guys, I know we got high falutin in the color discussions before with Kandinsky and Bugatti, but I think there's a much simpler explanation for the blue and I can't believe I didn't see it before.

 

 It's Donald blue:

 

post #1152 of 2152
Quote:
Originally Posted by Radio_head View Post
 

No.  Definitely on my list though.  Lately I've been stalking Donald's old posts on the SET asylum and it has renewed my desire to hear some uber-expensive audio note UK amps as well as Donald's own 2A3 amp.  And then maybe try the Sequence and its ridiculous crossover.  And get matching blue 2A3 speaker monoblocks.  And then paint my listening room in the same shade. 

 

By the way guys, I know we got high falutin in the color discussions before with Kandinsky and Bugatti, but I think there's a much simpler explanation for the blue and I can't believe I didn't see it before.

 

 It's Donald blue:

 

 

 

omg lol!!!! can't believe no1 noticed this earlier, thats awesome!!! now i see why it MUST be blue!!!

post #1153 of 2152
Quote:
Originally Posted by drheadphone View Post

Everything's about right except I find the 2A3C-T's low end not very extended. It's more mid-to-top heavy.
Thanks for your input, drheadphone! I hope the EML 5U4G will help out a bit on the bass department. I am using AMR DP-777 now, just not sure if the Sophia Princess with the DAC will make HD800 too warm sounding. I think at the end of the day, I probably have to listen to both the tube combi to decide on my preference. My poor wallet...
post #1154 of 2152
Quote:
Originally Posted by Dubstep Girl View Post
 

 

 

omg lol!!!! can't believe no1 noticed this earlier, thats awesome!!! now i see why it MUST be blue!!!

 

 

...or yellow. ;)

 

-Daniel

post #1155 of 2152

Using NOS Dac, in my case Audio Note, does have an audible impact on the Stratus compared to my computer + Wavelength Proton USB Dac  + Audiovirna (88kHz/24 bit, no upsampling), but i am not at the point where I can describe it to my satisfaction.  It is definitely a bit more warm and has more character, but this may be at some expense to clarity especially on male baritone voices.  I haven't figured it out yet.  The differences will depend on both Dacs I would imagine, but I only have 2 Dacs. Cables also make an audible difference.  Crimson cables are more transparent then AN Lexus and AN Vx, again these are the only type of cables I own. The 6BQ7A also produces a warmer presentation than various 6N1P1 models and vintages.  Some 6BQ7As are warmer than others; most are less resolving, but less strident in the treble. (Mullard did not NOT make a 6BQ7A!).  I also find some - only a little - difference in the stock rectifier and the Raytheon 5U4GB, with a latter producing a tighter bass, perhaps a bit deeper and better defined, but not by much.  There is also the Russian Saratov black plate 5U4G to consider, at about $20 more than the stock rectifier. I do not own the black plate.

 

And so on.


Edited by Frihed89 - 9/8/13 at 1:21am
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