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Woo Audio WA7TP (tube power supply) Impressions Thread - Page 32

post #466 of 475
Originally Posted by groovyd View Post

I have more then that haha, prefer to be well prepared for the tube-pocalyse :eek: 


I have 2 units, home and work and each has the WA7tp.  I bought 4 pair of cleartops, 4 pair of JANs, 4 pair of mullards, and the original 2 pair of stock.  For the WA7's i have the 2 pair of stock, another 10 pair of golds cryo, 6 pair of NOS, and 4 pair of the hybrids. 


Very impressive collection.  Tubes are a lot of fun and can be a smart investment.  :)

post #467 of 475

Mullards are really starting to sound incredible now after 40 hours of burn-in.  Much tighter and deeper bass, smoother mids. Am hearing entire instruments in tracks I have listened to thousands of times and never noticed deep in the background.  Very clear, very well defined.

Edited by groovyd - 9/25/14 at 6:36pm
post #468 of 475
Very similar experience here with the Mullards. I know it sounds cliche, but hearing new things in familiar tracks also. My T1 sounds better than ever with this setup!
post #469 of 475
Originally Posted by warrenpchi View Post

Since it's about to  be launched, I thought I'd get an impressions thread started.  If you've heard the WA7TP - and especially if you've been able to A/B it vs the stock PSU - please post your impressions here.  :smile:


I'll prime the pump with some early impressions about the prototype I heard way back at CanJam 2013:


W. Chi:  The WA7's basic signature remained largely unchanged in terms of frequency response. However I was able to enjoy a very pleasant improvement in transparency, soundstage and separation with the new PSU. And while I can't recall my personal WA7 ever sounding congested, it was very clear that the new PSU revealed a new level of detail, depth and dynamics. I was impressed enough that I reserved the first production unit off the line.

Thanks for starting this thread some 6 months ago. Considering adding the WA7tp to my WA7 and this thread is very helpful.

post #470 of 475
Originally Posted by olegausany View Post

Have no idea what are you talking about. I had WA7 with stock power supply and both stock and EH tubes and HD650 sounded great. Give stock tubes at least 20 hours and EH tubes at least 30 hours before saying something

Sent from my LG-V500 using Tapatalk

Just added EH tubes to stock WA7. Hate burning in time without listening. LOL


Edit: don't get me wrong, I was replying because I'm glad you indicated your suggested time for burn-in.

Edited by BirdManOfCT - 11/15/14 at 8:50pm
post #471 of 475
Originally Posted by LemSkee View Post

Two Cents from a Noooob...


Received my WA7tp about 3 weeks ago, but waited on posting this to ensure enough time had elapsed before I offered my opinion.


As a new Woo Audio customer, I must say I’m pleasantly surprised with the quality of their workmanship and the difference the TP makes is quite noticeable.  Forgive me if I do not yet know all the cool lingo, slang, and idioms that provide the audiophileism factor to gear descriptions and reviews, but I’ll try my best (SMILE).


Let’s start with “the bad”… For as much praise that I give to the aesthetics of both the WA7 and WA7tp, I am admittedly disappointed with the TP’s push button, which almost seemed to be an insult to such an exquisitely built unit.  When I received my WA7, it felt and looked like a piece of art to me, from any direction, and turning its buttery-smooth knob solidified that impression.  The WA7tp’s power button (in contrast) does not feel stable, unnecessarily turns, and overall detracts from an otherwise flawless design.  I can definitely see Woo addressing this following their next revision.


Upon unpacking, setting up, and turning on the TP for the first time, one of the tubes [stock pair] (like others have described) created a bright white flash – is this arcing?  Being new to tubes in general, it made me nervous especially considering how much money had been poured into the WA7 + WA7tp system.  After about a 15 minute warm up, I elected to proceed with a listening session and my frown began to quickly turn upside down.  Quick note, I run HD800 cans and EH Gold upgrade tubes on the WA7, set to LO-Z, and use the WA7’s DAC via USB .   I listen to just about everything except metal and country.


Yay!  That’s the only “bad” I’ve got, all the rest is pure joy…


Here’s the best way I can describe the transitions I’ve noticed with the changes made up to this point:


  • The EH Gold tubes on the WA7 added a tightness to bass, more defined mids, improved (IMO) soundstage, but also a tad more sparkle – something that bothered me a bit on an already bright pair of cans.
  • The WA7tp (with stock tubes) made the bass appear to be even tighter, mids sound more pronounced, and the biggest surprise was how it shaved off the top end sparkle just enough to truly allow me to fall in love with HD800s.  Loving the improvements thus far, I was eager to see what additional burn in time would give me on the stock tubes.  But I have no patience, so….
  • Enter the Sylvania JAN 5814A (110/110 | 110/110) tubes.  As another Head-Fier stated in so many words, these tubes just make everything better, and it’s the truth.  I think, generally speaking, HD800 owners tend to want a bit more bass for our beloved cans, and I was shocked with the results from rolling in these tubes.  I get all of the clean, tight, and accurate bass from the previous upgrades, but more of it – and not in an obnoxious way at all.  I even had to check my EQ to make sure everything was still flat when I started listening.  The low end goodness was first evident when I’m Trippin by Millok came across my track list.  I did, however, notice an increase in brightness / sparkle which I wasn’t overly happy about (at first) – but considering the improvements in every other category this was a small price to pay.  In a perfect world, I’d take everything the Sylvanias gave me with the “top end refinement” of the stock TP tubes – but bear in mind, this is just my own personal preference.  I also don’t get bright white flashes with these tubes and have more than 90 hours on them as of this post (the cans were previously burned in with 80+ hours of pink noise).


Loving the HD800s has been quite a journey for me, an acquired taste if you will.  Seemingly each element changed in the system has been a clear improvement – the EH Gold tubes, then the WA7tp, and finally the Sylvania tube swap.  That additional sparkle I mentioned earlier is somehow getting smoothed out with each passing day and listening session – call it placebo, call it auditory adaptation, or call it what I do: A surprisingly delightful combination of components all working together symbiotically to deliver some of the best musicality you’ll probably get in this price range…


Oh, one other side note: I (luckily) did not experience any of the color differences or height variances between my WA7 and WA7tp (silver finish).  Also, if you want to keep that dead silent, pitch black background, be sure to separate your two units at least 8+ inches apart or be prepared to hear buzzing in your cans.


Apologies for such a long-winded post (especially from nooobish material like myself).  Happy hunting fellow head-fiers!

Excellent! Thanks!

post #472 of 475

Thanks guys. 

I tried the mullard and fell inlove with it.

better imaging, some sounds that fell behind the music popped out , better instruments ohhh those strings gave me chills. i never imagined that a tube for the psu would have a drastic effect on the sound.

I'm a noob but after listening to these tubes, I may now know what soul in the music means.



Although i costed me a hefty 400usd (due to customs corruption)

Mullard cv4003 match pair. cryo treated.


i have a question what does the 29000/29000 mean? cant seem to find any info on that.

is it good? i just picked the highest possible price for this on the upscale audio site.

Edited by ShySugarDaddy - 11/21/14 at 9:39pm
post #473 of 475
Originally Posted by ShySugarDaddy View Post

i have a question what does the 29000/29000 mean? cant seem to find any info on that.

is it good? i just picked the highest possible price for this on the upscale audio site.

It is a measurement from their test rig which in itself does not mean much more than the tubes work and the sections match 

post #474 of 475
Originally Posted by BirdManOfCT View Post

Just added EH tubes to stock WA7. Hate burning in time without listening. LOL


Edit: don't get me wrong, I was replying because I'm glad you indicated your suggested time for burn-in.



Yeah...that's a good move.  I found them terribly bright until they settled down.  I need to go back to the stock tubes to see how I feel about them.  Have to say I was happy with the stock tubes and at first thought I'd made a bad call when I listened to the EH gold tips too early.  They're fine by me now.



post #475 of 475

Just reviving this thread a little as I'm keen to hear impressions of anyone who has used the WA7/tp and the WA6-SE and what their overall preference was?  


I'm trying to decide between these two for the LCD2-2Fs and would really value any opinions.  





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