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post #1186 of 1198


No offense taken Mike.  Great write-up. 

post #1187 of 1198

Wow Mike, great review! Your knowledge of tubes and your audio-linguistics are very impressive. I am so glad you got to experience the great grey shielded CCAs. A truly extraordinary tube.

 

My latest passion is for the BUG Head Emperor audio player. It takes playback to a new level.


Edited by Franatic - 4/27/15 at 1:31am
post #1188 of 1198
What a great write up. Might be one of the best I've read. I absolutely agree with your findings, with the CCa.
Glad they worked out for you my friend.

Cheers
Quote:
Originally Posted by mikoss View Post

In case anyone is on the fence about upgrading their driver tubes... here are some impressions. I gleamed them from using the CCa in my tube buffered DAC.

Thoughts on the Siemens grey shield CCa...

- This is without a doubt a high fidelity presentation. It is extremely musical sounding, yet it's a German tube... if you've auditioned other Siemens tubes and found them to be dry, or overly v-shaped in their presentation, this takes the V and fills in the middle. The presentation of this tube will literally send chills through your spine... it is extremely unique in that the soundstage depth/width/imaging/spatial cueing is incredibly full. Top to bottom, side to side, sonic layering from front to back... the presentation is absolutely involving and engulfing.

- Mids are much different than the Philips tubes though. They are more tilted towards the upper midrange, (which is a very nice place to tilt them). They remind me of the liquid midrange I hear with old school Mullard tubes... you get the tweed of the guitar, and more of the high-end distortion coming through. The body is not as full or "holographic" sounding as the Amperex house sound (Orange globes, Miniwatts, etc), but it is full of detail... rich, high-mid detail. This tube creates its own holography from top to bottom... but it's not mid-focused like the Amperex tubes.

- Bass is full as well. I have always found the E88CC tubes to sound a bit more bass heavy than their E188CC counterparts, which to me come across for the most part as a tad more refined/elegant. I am not a bass head, but have no major problem with the bass presentation of the CCa. It's plentiful, fulfilling, but for me, a bit exaggerated. This is part of my minor qualm with this tube... the exaggerated bass and tilted mids create a less linear presentation than the E188CC tubes. HOWEVER, for this tube, the bass is definitely part of the experience... the depth of the soundstage is only possible because of the power down below, and up top.

- Speaking of the high end, it has a lot of energy, and it translates very well with HD-650's. I also believe the top-end presentation absolutely contributes to the detail this tube presents... nuances in tonal decay are present throughout every song. I've found personally that picking up on these nuances is only possible with a very select few tubes, and I've never heard them presented so very perfectly as this tube does. Spatial details I never thought possible are in our music, and I fully believe this tube allows you to hear them unlike any other 6DJ8 tube.

I've heard other CCa's that are nowhere near knocking my socks off the way this tube has. I especially enjoy it for rock music... I said this about the PW tubes, and I will say it also about this tube; it changes my music in a way that reminds me of vinyl. The music sounds organic, very raw, and surrounding. High fidelity.

Other minor quibbles are:
-Attack is not as fast as Orange Globes... I find the OG's to sound very precise in their presentation, even if their tone is more rounded off. The tone of the CCa tube is more satisfying at times though, and the decay is superb. They just seem to not have the same initial definition of each note, yet once the notes are there, they linger beautifully.
-I also find the CCa's to be fatiguing over long sessions. I attribute this to their midrange tilt, and I find it very interesting... I don't really get fatigue from any other tubes with my HD-650's. I am very sensitive to bright headphones, and I guess these tubes just happen to put a bit too much energy into the treble for extended listening sessions. I do find that taking a 5 minute break every once in a while helps. It's not the very top end of the treble either, like I said, it's in the upper mids.
-Linearity and elegance is not there... I don't want to say they sound muddled up, because that sounds harsh, but they don't have Telefunken-like laser precision, and it's audible. It's not a distraction to me, because their presentation is just so emotionally involving, yet it makes me want to go back to E188CC tubes every once in a while. I like refinement, but I really, really love the Siemens grey shield CCa's.

@billerb1
 in case you are wondering, I still love the PW 6922 and hold it in the top dog spot. (Mostly for the linearity, tonality, body, and absolutely perfect midrange). If it imaged like the CCa, I would die of sonic bliss.
post #1189 of 1198

Am selling my GEC 6080 NOS pair...only because I just bought a pair of GEC 6AS7G's (thanks to Franatic for his help!)



Here's the link to my posting on the For Sale Forum.  They need a worthy home.  The upper mids and treble are just killer on em. 



Pure liquid goodness.



 



http://www.head-fi.org/t/767962/gec-6080-nos-perfect-pair



********** S O L D *********
Edited by billerb1 - 5/21/15 at 10:27am
post #1190 of 1198

My brand new WA2 arrived yesterday and I've been in heaven for the past 24 hours. 

 

NOS tubes:

 

Mullard EZ80

Amperex 6dj8

Tung Sol/Chatham 6AS7G

 

post #1191 of 1198

Very nice setup, I need to snag some Tung Sols to finish mine.

post #1192 of 1198
Quote:
Originally Posted by switchride View Post

Very nice setup, I need to snag some Tung Sols to finish mine.
[/quote

Thanks! I haven't rolled NIS yet, just the ones I bought initially.
What tubes do you have?
Also, after putting in the Amperex 6dj8, I used the WA2 as a preamp for the loudspeaker system and it sounded fantastic. The next day one of the 6dj8s glowed purple due to a leak. After some reading I noticed that some driver tubes ARE NOT meant to be used as preamp tubes. Don't know for sure but it just seemed too coincidental. Any experience with this?
post #1193 of 1198

Currently using:

 

GEC 6080

Siemens E88CC

RFT EZ80

 

It sounds pretty fantastic and I got it all for my birthday in March but I am probably going to be listing my setup for sale soon.  Need the cash to pay for new baby bills.  Was nice to be able to see what everyone was always talking about with how much difference a good tube amp makes :)

post #1194 of 1198
Quote:
Originally Posted by devilboy View Post
 

My brand new WA2 arrived yesterday and I've been in heaven for the past 24 hours. 

 

NOS tubes:

 

Mullard EZ80

Amperex 6dj8

Tung Sol/Chatham 6AS7G

 

 

Congrats!  It's better than being in heaven because you don't have to die to go there...  :p

 

What are those little disks on in the background?


Edited by HiFiGuy528 - 6/18/15 at 5:10pm
Reply
post #1195 of 1198

Hello Mike, and thanks!

 

Those disks are brass weights from Mapleshade Audio.  They are supposed to dampen resonances in the chassis of the equipment.  I had some extra lying around so I put them on. 

 

I can't wait to get me Exactpower EP 15A back from being repaired (undervalued bias caps were put in right from the beginning).  The WA2 will receive true 120V and 60Hz and I'M THRILLED to hear what the WA2 will sound like then. 

 

I can't tell you how happy I am with the WA2.  I've been in the loudspeaker "game" for 25 years.  I've been to the shows in NY, Denver and Vegas.  I've heard the mega six-figure loudspeaker systems and I can say without a doubt, that NONE of those systems has given me as much joy as my Sennheiser HD800s with this little Woo WA2.  What I've heard in my new venture into the headphone listening world in the past month has made me happier than ever before.  Thank you Woo Audio.  Music is now fun again.

post #1196 of 1198
Quote:
Originally Posted by devilboy View Post


I can't tell you how happy I am with the WA2.  I've been in the loudspeaker "game" for 25 years.  I've been to the shows in NY, Denver and Vegas.  I've heard the mega six-figure loudspeaker systems and I can say without a doubt, that NONE of those systems has given me as much joy as my Sennheiser HD800s with this little Woo WA2.


My feelings exactly! With upgraded tubes (TS5998, RFT EZ80, Mullard CV2493) I consider the WA2/HD800 setup to be endgame, at least for me.

Tip of the cap to Bill Erb for talking me into buying the WA2 smily_headphones1.gif

Cheers, JC
post #1197 of 1198
Quote:
Originally Posted by OldSkool View Post



My feelings exactly! With upgraded tubes (TS5998, RFT EZ80, Mullard CV2493) I consider the WA2/HD800 setup to be endgame, at least for me.



Tip of the cap to Bill Erb for talking me into buying the WA2 smily_headphones1.gif



Cheers, JC

 



Hey JC...hadn't visited this thread for quite awhile. Glad your setup is still treating you right. I'm in the same position with my WA2...but I have switched around my go-to tube setup and really like where I've ended up. So many combinations are great...mine seems to be somewhat of a moving target.
Presently:
GEC 6AS7G's
1956 Pinched Waist Amperex 6922's (first pinched waist version)
Philips Sittard EZ80's

Just an incredibly "beautiful" sound. That's what the GEC's do...they bring beauty in spades. Not as finely detailed as some other combinations I've tried or as 'in-your-face' impactful...but their sound is hypnotic to me. Incredibly engaging and real.
Hope all is well JC.
Edited by billerb1 - 7/27/15 at 7:00pm
post #1198 of 1198
@billerb1, I have Tungsol/Chatham 6AS7G. Any experience comparing those to the GEC?
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