Schiit Valhalla Tube Rolling thread.

[jonathan c]

Man, just when I felt incredibly satisfied with these JJ's...

Added it to my shopping list

What is “it”?

 

[Lvivske]

What is “it”?

Tubemonger Brimar 4033 that was recommended

 

[Lvivske]

Okay so the new question is, if Tubemonger is sold out, where can I get a 12Axx Adapter for the Brimars?

 

[Guidostrunk]

Okay so the new question is, if Tubemonger is sold out, where can I get a 12Axx Adapter for the Brimars?

From the actual supplier lol.
https://pulsetubestore.com/products...uction-base-9-pin-b9a-noval-not-made-in-china

 

[Lvivske]

From the actual supplier lol.
https://pulsetubestore.com/products/12axx-to-ecc88-adapter-plug-play-novib-©-1960s-nos-british-mcmurdo-phenolic-socket-on-top-plus-vibration-reduction-base-9-pin-b9a-noval-not-made-in-china

the link you sent me by accident, i was wondering why i already had this bookmarked

 

[Lvivske]

Brimar are typically less tubey sounding and a bit brighter tube than the Mullard.

The seperation of instruments detail and imaging within that stage is incredible, and the speed, impact and natural decay of the notes, really adds to the sense of realism. Man, I could go on and on about this tube, but what I just described is what stands out the most.

Read through dozens of pages now, but have a question about the Brimar CV-4033 to whoever has tried them and if the above applies - are the 4033's a bright tube? (or was that referencing a different model)

The JJ's are doing a great job right now but I'd still love to try something universally better. A lot of positive views in here about the 4033s, would I be sacrificing anything in my sound signature in exchange for the holographic realness?

 

[regaet]

In my experience, Mullards can have a wonderful midrange but lack in the highs. The Brimars are wonderful from top to bottom in my system. Wes did me a great favor rolling all of those holy grail tubes and taking the time to document it here. The Brimars are by far the best I've had in my system. I'm listening right now and smiling.

 

[Ripper2860]

Read through dozens of pages now, but have a question about the Brimar CV-4033 to whoever has tried them and if the above applies - are the 4033's a bright tube? (or was that referencing a different model)

The JJ's are doing a great job right now but I'd still love to try something universally better. A lot of positive views in here about the 4033s, would I be sacrificing anything in my sound signature in exchange for the holographic realness?

The Brimars are a bit brighter than Mullard but certainly not what I would consider a bright tube. Mullards are a bit more euphonic and warmer with richer mids. As stated above, they are known for their rich mids and have a top-end that is a bit rolled-off. The Brimars are a little less warm having more balanced sound top-to bottom but still on the warmer side of neutral. IMHO, of course.

BTW - this is comparing Brimar CV4033 to Mullard CV4003. My preference is the Brimars.

 

[Ripper2860]

A side note: The CV4033s are some very versatile tubes. They rank above MANY of my 6SN7s (and I have more 6SN7s than any sane person should). The CV4033 has also earned a prominent spot in my Lyr 3 tube rotation -- with an adapter, of course.

 

[Lvivske]

Anyone here other than Robert try the Brimar CV4024's? Just doing some reading and saw the 4033's were the same tube just with loose leads originally for soldering. Rob preferred the 33s, just curious - it's about a $17 difference at the moment for a pair

 

[Guidostrunk]

Anyone here other than Robert try the Brimar CV4024's? Just doing some reading and saw the 4033's were the same tube just with loose leads originally for soldering. Rob preferred the 33s, just curious - it's about a $17 difference at the moment

Not even close. The cv4024 is the bottom of the barrel Brimar 12at7. The cv4033 is a military industrial grade tube , hence the flying leads. Bypass the cv4024 and get these!
https://www.ebay.com/itm/12AT7-CV45...2349624.m46890.l49286&mkrid=710-127635-2958-0

 

[Guidostrunk]

The cv455 is the consumer version of the cv4033. It wasn't held to the standards of production of the cv4033 but it's identical in construction to the eye.

 

[Lvivske]

Not even close. The cv4024 is the bottom of the barrel Brimar 12at7. The cv4033 is a military industrial grade tube , hence the flying leads. Bypass the cv4024 and get these!
https://www.ebay.com/itm/12AT7-CV45...2349624.m46890.l49286&mkrid=710-127635-2958-0

Decisive take. Love it.

thanks

 

[jonathan c]

Not even close. The cv4024 is the bottom of the barrel Brimar 12at7. The cv4033 is a military industrial grade tube , hence the flying leads. Bypass the cv4024 and get these!
https://www.ebay.com/itm/12AT7-CV45...2349624.m46890.l49286&mkrid=710-127635-2958-0

Lvivske, please follow Guidostrunk’s recommendation. The Brimar CV455 with KB/FB markings (the Footscray plant) are used by a number of us who own Valhalla II, Mjolnir II, or both. These CV 455s give the listener 95-ish% of the sound quality of the all-time #1 12AT7 (the Brimar CV4033 KB/FB square getter: 1956) at 60% of the price. You will not regret Guidostrunk’s advice!

 

[Lvivske]

Lvivske, please follow Guidostrunk’s recommendation. The Brimar CV455 with KB/FB markings (the Footscray plant) are used by a number of us who own Valhalla II, Mjolnir II, or both. These CV 455s give the listener 95-ish% of the sound quality of the all-time #1 12AT7 (the Brimar CV4033 KB/FB square getter: 1956) at 60% of the price. You will not regret Guidostrunk’s advice!

wait...CV455? I thought we were talking CV4033 here

also this brings up a seconary point since you mentioned 1956...does year matter? because Tubemonger only has the 70s lot in right now - Pulse has the '60 & '58 for a higher price; I know Wes mentioned grabbing all of them (the 4033s)