Oblivion | UltraSonic Studios
Aug 15, 2021 at 4:12 PM Post #2,986 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
So are saying that my Sylvania labeled GE 6AK5 tube with the blue tips aren't worth more than the 99c I paid?
1629053822695.png
LOL! I would never attempt to place a value on someone else's tubes. :laughing: But I will say that whoever painted them picked an awesome color (at least the two on the left that are a true Carolina blue). :smile:
 
Aug 15, 2021 at 4:22 PM Post #2,988 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
What are you using 12ax7 for? I have not been particularly fond of small tubes until now. They are small and hard to preserve the words that are painted on the tubes. However, I'm liking these small tubes tone now. There's a precision and clarity.

I wasn't specifically looking for 12ax7, I was looking at 12at7 as the gain factor is 60 which is what my mind thinks is ideal for my setup. :) However I realized now that all 3 types of 12au7, 12at7 and 12ax7 are perfectly suitable in Odyssey. I don't know how Tomas set them to be compatible in Odyssey but they are.
If you're looking for 12AT7's, these Footscray plant Brimars are pretty special. Actually, very special. I won't take credit for discovering them -- it was the guys over in the Schiit Mjolnir thread. I ordered a couple and have to agree with them (and I'm not even much of a Brimar fanboy).

https://pulsetubestore.com/products...play-ready-to-use?_pos=3&_sid=169a59abc&_ss=r
 
Aug 15, 2021 at 4:24 PM Post #2,989 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
Why? Surely they would be an advantage for when your golf balls end up in the lake 🤣.

Sorry but I saw a chance to get in there before bcowen!
:laughing: :laughing: :laughing:
 
Aug 15, 2021 at 4:25 PM Post #2,990 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
I think a little red nail polish will look good.

1629056565264.png

Better?
1629056766007.png
Western Electric tubes don't need painted tips to be special. Just sayin'. :smile:
 
Aug 15, 2021 at 4:27 PM Post #2,991 of 4,099

UntilThen

Headphoneus Supremus
Joined
Jun 16, 2015
Posts
18,454
Likes
10,870
If you're looking for 12AT7's, these Footscray plant Brimars are pretty special. Actually, very special. I won't take credit for discovering them -- it was the guys over in the Schiit Mjolnir thread. I ordered a couple and have to agree with them (and I'm not even much of a Brimar fanboy).

https://pulsetubestore.com/products...play-ready-to-use?_pos=3&_sid=169a59abc&_ss=r

Thank you for helping to spend my money ! I have to trust you as I have trusted you with giving me the right iron or wood. Will try this Footscray. Do they have a Bumscray?
 
Aug 15, 2021 at 4:41 PM Post #2,992 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
Thank you for helping to spend my money ! I have to trust you as I have trusted you with giving me the right iron or wood. Will try this Footscray. Do they have a Bumscray?
I'm better with tubes than golf clubs, which I fully realize isn't saying all that much. :smile: Not sure on the Bumscray, nor do I want to discuss it further. :stuck_out_tongue::stuck_out_tongue:
 
Aug 15, 2021 at 4:55 PM Post #2,993 of 4,099

UntilThen

Headphoneus Supremus
Joined
Jun 16, 2015
Posts
18,454
Likes
10,870
Tube amp is like golf. You choose the right tubes for the occasion. What tubes would you choose for this?

 
Aug 15, 2021 at 5:36 PM Post #2,994 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
Tube amp is like golf. You choose the right tubes for the occasion. What tubes would you choose for this?

NEC's, of course. :smile: And if I tried to move my body like that these days I'd probably break something.
 
Last edited:
Aug 15, 2021 at 5:59 PM Post #2,995 of 4,099

UntilThen

Headphoneus Supremus
Joined
Jun 16, 2015
Posts
18,454
Likes
10,870
Why NEC? I hardly see any NEC tubes.
 
Aug 15, 2021 at 6:36 PM Post #2,996 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
Why NEC? I hardly see any NEC tubes.
I don't know. But after that and the golf course pictures, I want some of whatever's in your water there. :smile:
 
Aug 15, 2021 at 7:08 PM Post #2,997 of 4,099

UntilThen

Headphoneus Supremus
Joined
Jun 16, 2015
Posts
18,454
Likes
10,870
I have a pair of Brimar 12au7 long plates. These are good tubes but one of them is noisy. The other one is perfect and quiet. I'm using it now in Odyssey and it's a great tone. I've now gone through all of 12au7, 12at7 and 12ax7 in Odyssey and I'm satisfied that they are splendid as drivers in the amp. Of course there are the 6SL7 and 6SN7s .....

IMG_2922.jpg
 
Aug 15, 2021 at 7:33 PM Post #2,998 of 4,099

bcowen

Headphoneus Supremus
Joined
Jan 3, 2018
Posts
9,604
Likes
22,637
Location
North Carolina
I have a pair of Brimar 12au7 long plates. These are good tubes but one of them is noisy. The other one is perfect and quiet. I'm using it now in Odyssey and it's a great tone. I've now gone through all of 12au7, 12at7 and 12ax7 in Odyssey and I'm satisfied that they are splendid as drivers in the amp. Of course there are the 6SL7 and 6SN7s .....

Some guys say these 1956 Footscray (KB/FB) CV455's are extremely close to the CV4033...for less than half the price from Langrex. I haven't tried one myself.

https://www.ebay.com/itm/274128808004?hash=item3fd359a844:g:5AgAAOSwBbhg7ZkR
 
Last edited:
Aug 15, 2021 at 7:41 PM Post #2,999 of 4,099

UntilThen

Headphoneus Supremus
Joined
Jun 16, 2015
Posts
18,454
Likes
10,870
Odyssey is a powerful amp but it's so quiet. With both LCD4 and He1000se, when no music is playing and the volume knob is rotated to max, there is no noise at all. Just pitch blackness. This amp will drive speakers and yet have finesse handling any headphones.

I told Tomas that I want Odyssey to be first and foremast a headphone amp and secondly a speaker amp for tube friendly speakers. I can tick off these boxes now.
 
Aug 15, 2021 at 8:39 PM Post #3,000 of 4,099

leftside

Headphoneus Supremus
Joined
Jul 21, 2013
Posts
2,523
Likes
2,807
Location
Vancouver, Canada
One year earlier and also from the Footscray (FB) plant:
https://www.langrex.co.uk/products/12at7-cv455-kb-fb-brimar-rare-triple-mica-1956-nos-valve-tube/

These are all great 12AT7. Another favorite of mine is the Mullard 12AT7 CV455 KB/DA 1954 square getter. These are my "go to CV455". Langrex had quite a few of these in stock a few weeks ago, but when I went to look again they had all gone. He does still have the 1952 Philips welded plate which are exceptional, but starting to get pricey... but not as pricey as black plate triple GEC A2900/CV6091 or GEC B309...
 
Last edited:

Users who are viewing this thread

  • Top