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2359glenn | studio
Nov 8, 2018 at 5:22 PM Post #23,191 of 39,986
leftside said:
@dminches - you not only have good taste in amps - but also DACs and headphones :)

How do you like the 300B compared to the OTL? I have the 300B and it's the best headphone amp I've ever listened to, but I don't tube roll with it. I'm getting the OTL to tube roll (with tubes such as the 6AS7Gs which I also have a few of).

Post up a pic of your 300B! They are few and far between on here.
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The OTL is very good but the 300B is the best amp I have ever heard.

2014-02-10 12.09.13-1.jpg
 
Nov 8, 2018 at 6:27 PM Post #23,193 of 39,986
wazzupi said:
Any reliable place to buy 6 noiseless matching 6bl7s ?
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I doubt it. But it is perfectly fine to purchase these one at a time. I would suggest that you get 8 or 10 or even 12. Most important, buy NOS. While not 100% reliable, if the vendor claims it tests NOS and it still has the original box, there is a very good chance the tube is NOS.

Further, in my experience it is sometimes a challenge to get 6 tubes that are quiet together. I usually run each tube as a driver first, to make sure it isn't a dud. And I have had 6 tubes work fine as drivers, but when installed together as output tubes, there is a strong ground hum. I have no idea why... So if you have a few extras, you can mix and match until you get a quiet set.
 
Nov 8, 2018 at 8:08 PM Post #23,194 of 39,986
gibosi said:
I doubt it. But it is perfectly fine to purchase these one at a time. I would suggest that you get 8 or 10 or even 12. Most important, buy NOS. While not 100% reliable, if the vendor claims it tests NOS and it still has the original box, there is a very good chance the tube is NOS.

Further, in my experience it is sometimes a challenge to get 6 tubes that are quiet together. I usually run each tube as a driver first, to make sure it isn't a dud. And I have had 6 tubes work fine as drivers, but when installed together as output tubes, there is a strong ground hum. I have no idea why... So if you have a few extras, you can mix and match until you get a quiet set.
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Thats what i did basically I bought 9 and used the best combo
 
Nov 8, 2018 at 8:16 PM Post #23,195 of 39,986
UntilThen said:
It's been 5 days with EL11s and 6bx7s. Last night, I roll in ECC35 in place of EL11s and was quite shocked that I prefer EL11s now. I also paired EL11s with 5998s. Whilst it's a great tone but I prefer EL11s with 6 x 6bx7gt. It's a great pairing with hd800 original.

Also I find the tone much better now than when I started 5 days ago on Monday.

Problem is EL11 is difficult to find now, especially NOS ones. If you find them it will be expensive. I may have to experiment with EL3Ns and EL8 to see if they are also as engaging to my ears.
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Hello UT...

Do me a favor please, and revisit FDD20 and see how it does against the EL11 pair...
 
Nov 8, 2018 at 8:32 PM Post #23,196 of 39,986
JazzVinyl said:
Hello UT...

Do me a favor please, and revisit FDD20 and see how it does against the EL11 pair...
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Alrighty.... this weekend. I have 5 fdd20. If I get 4 more adapters, I can run an all fdd20 setup lol.

I will post some impressions of c3g, fdd20 and EL11s all with 6 x 6bx7.

However that Glenn 300b amp looks so juicy. :)
 
Nov 8, 2018 at 9:03 PM Post #23,197 of 39,986
UntilThen said:
Alrighty.... this weekend. I have 5 fdd20. If I get 4 more adapters, I can run an all fdd20 setup lol.

I will post some impressions of c3g, fdd20 and EL11s all with 6 x 6bx7.

However that Glenn 300b amp looks so juicy. :)
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You won't find a better sounding amp but good 300Bs are expensive.
It still sounds great with cheap 300Bs they just go bad in less then a year.
I am waiting for WE to finally resume production so I can buy a new pair. I stupidly sold my pair when I was told I had 18 months to live that was 6 years ago.DA.
Got $8000 for them but wish I ddn't do it.
 
Nov 9, 2018 at 4:45 AM Post #23,199 of 39,986
Nov 9, 2018 at 12:39 PM Post #23,201 of 39,986
That's better,,,

Found my good FDD20...the one that is nice and quiet. Have 3 out and two of the three make noises, sounds like someone trying to claw his way out of the submarine...

Have two NEW FDD20's still in factory wrappers, but didn't want to break them out, just yet.

This quiet one...is so "Aaaahhhhhhhhhhhh that's nice"...so glad I found the good one. Restores my faith in this absolutely wonderful "getting harder to find" driver.

It's "just right" on so many levels....using it with a six pack of 6BL7.

Cheers all, and........Thank You, Glenn...!!!
 
Nov 9, 2018 at 12:44 PM Post #23,202 of 39,986
mordy said:
I found that the German eBay site is the best one for EL11 tubes. Here is a pair NIB for $39 shipped:
https://www.ebay.de/itm/2x-EL11-Adz...=item2aba1b2d9f:g:PRsAAOSw7wxauiBB:rk:31:pf:0
Most of the EL11 tubes I have were bought used at good prices, but it looks like there are fewer offerings now, but still possible to find good deals.
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Nice find, Mordy!!

There is a fine looking FDD20 on the German site too:

https://www.ebay.de/itm/Zwei-Stuck-...Triode-FDD20-ungepraucht-gepruft/132821386861

Amazingly....the tax stamp appears to be the same day and number, as the one I have in my amp....now!!
 
Nov 9, 2018 at 1:39 PM Post #23,204 of 39,986
An @attmci suggested driver, the tall bottle, T Plate (flat sides facing each other), oval bottom mica, 7N7 is also a superb driver in the GOTL.

Has a smoother high end than its short bottled cousins, and superb mids plus great bass.

I like it...

Many a driver shines, in Glenn’s tube amplifier architecture.

:)
 
Nov 9, 2018 at 1:53 PM Post #23,205 of 39,986
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