Preamp Deal of the Century

I think I screwed up!

I just got a pair of NOS Tung Sol Round Plates in today and I don't like them at all. They are rather lean in the mid-range and somewhat bright in the high frequencies.

I am hoping these symptoms disappear after the tubes have some time on them. But to be honest, after about two hours, I couldn't take it any longer and I put the EH 6SN7's back in. Viola, I had the music back.

I would appreciate hearing your experience with the Round Plates.

Thanks in advance.

Fiddler,

Are you sure you have round plates and not just tung sol 6sn7's? My tung sol round plates sound fantastic from top to bottom. Smooth in the top end, great midrange and solid, deep bass. Mine sounded this way from the day I got them. BWhite once posted pictures of the Tung Sol round plates on this thread, but I doubt if I could find it. I will try. If I do, I will let you know where to find them. Guess I need to get a pair of the EH6sn7's to see how they stack up.

Hullo from Scotland !
Got a nos Mazda/ mullard from Holland ? my other GZ34 MUST BE DUFF because after 2 days this is a huge improvment.
Screechy, nasty to start with but just gets better & better in every respect than the Sovtek - not by a huge amount & not to slag the Sovtek - really shines at the frequency extremes though in comparison.
Wan't to try the Bendix but the shipping is more than the tube.

Fool that I am, I have missed the obvious - there are some very nice NOS tubes available in the UK for buttons as opposed to the rather silly prices on Gon & Ebay.
Suggest Supratekies from the same neighbourhoods get together - NOS Mullard GZ34s are readily available for around $44 which seems ? reasonable.
Quite happy to send gifts to the states and stop people screwing everyone.
Set of brown/red base CBS/RCAs coming (6sn7s)so I should never need another set of these - I hope so,I've spent more on valves than I did on the amp.
Still it's fun & way the nicest most rewarding bit of kit I've ever owned - I listen, I look and I think that should have cost way more than it did !!
Now that I have spent days tweaking all the tables - the phono stage is - enlightening ? never had to spend six hours tweaking the azimuth but the that was because I could never hear the results properly.

Mick for PM of Oz says me!
The wife says they're lovely but couldn't the c--t make them a bit friggin smaller, Aussie Git !
3 weeks down the line she listened to 2 & half songs then started on"What does that bit do? - is it absolutley necessary - blah, blah" Last time I ever ask her opinion - thank the lord she will never tell the differnce when a Cortese or Cabernet appears !!!!!!!

First thing I did right out of the box was to compare them to pics. Yep, they appear the real deal.

Maybe they just need some time on them, but I did read another post in the Asylum where a guy said they were bright in his system.

I also received an email earlier today from another guy who said " have used a couple of different pair of round plates in my Syrah. Both noisy, lousy bass, I don't know what the hoopla is about. I now use Hytrons. Pretty good."

So like always, so much is system and listener dependent.

I will eventually give them some more burn-in time, but I am really enjoying the EH 6SN7's.

I should get my TSRP next week im hoping they sound good,if not i should not have a problem selling them,,also getting a pr of RCA grey glass VT231,,