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PostPosted: 05 Dec 2017, 05:30 
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Joined: 06 Jun 2008, 18:23
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Location: Australia
New kid on the block; http://korgnutube.com/en/
I've ordered one from RS Australia AU$65.
Attachment:
NutubeImage.jpg


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Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
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PostPosted: 05 Dec 2017, 06:23 
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Joined: 02 Mar 2009, 12:41
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Location: Vänersborg, Sweden
Been looking at that one, though it is a bit pricey. It's interesting that is built up almost like a VFD. And talking of VFDs, seen some experimting using that kind of display as an amplifyer. Besides, it holds an anode, a cathode and a control grid, hower directly heated. :idea:

I have in the project pile the single transistor amp (2sk1058) and have a bunch of 6S31B as predriver, but a Nutube would look nicer. 8-)

One objection: How the H*** could they give the tube the number 6N1P. There's a Russian tube, widely used with that number!!! :confused:

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PostPosted: 05 Dec 2017, 12:28 
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Joined: 08 Aug 2009, 03:11
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Location: Chilliwack, BC
Let us know how it sounds.
I got the engineering pre-release email a few years back on that thing and couldn't help but think it's design made it inherently noisy.

Cheers!

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PostPosted: 05 Dec 2017, 17:58 
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Soundbrigade wrote:
Been looking at that one, though it is a bit pricey. It's interesting that is built up almost like a VFD. And talking of VFDs, seen some experimting using that kind of display as an amplifyer. Besides, it holds an anode, a cathode and a control grid, hower directly heated. :idea:

I have in the project pile the single transistor amp (2sk1058) and have a bunch of 6S31B as predriver, but a Nutube would look nicer. 8-)

One objection: How the H*** could they give the tube the number 6N1P. There's a Russian tube, widely used with that number!!! :confused:

Agree on two counts, pricey and silly name.

And Geek, they talk of the noise issues.

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Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


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PostPosted: 07 Dec 2017, 18:02 
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Joined: 09 Oct 2012, 19:43
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Location: Vancouver Canada
I was reading a few months ago on a DIY using this tube. It caught me as just different enough to be worth trying but after reading all and between the lines i decided "no" due to an obvious noise sensitivity issue and microphonics.


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PostPosted: 07 Dec 2017, 21:38 
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Took an hour to workout filament connections but now have it sorted. Mine arrived.
Attachment:
image.jpeg


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Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


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PostPosted: 08 Dec 2017, 03:33 
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Joined: 02 Mar 2009, 12:41
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Location: Vänersborg, Sweden
AN HOUR!!!!! How many connections do you have??! :confused:

I am into the same kind of stuff but my tube will (hopefully) show the time of day. And I managed to pick out the connections with a help of a Rosette-pdf (Russian/German)

Attachment:
VFD-01.jpg


Seriously, the Nutube and my display are made up in a similar fashion. Directly heated cathode, grids and anodes and both are glowing (blue/green?) in the dark. I've seen projects where an VFD has been used as an amplifier and once, it would be cool testing that myself. But for the time beeing, I stick to trying to find a good way to "power up" my display and following this thread. (Got a apir of Russian clock-IC waiting to be picked up).

Sorry for OT.


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PostPosted: 08 Dec 2017, 08:41 
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Just discovered that the guy who bought my latest tube HP amp - Sanctum - has already built something with a Nutube.

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PostPosted: 09 Dec 2017, 02:33 
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Location: Chilliwack, BC
Anode Dissipation: 1.7mW

Milliwatts....

Is this a typo?

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PostPosted: 09 Dec 2017, 04:05 
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Geek wrote:
Anode Dissipation: 1.7mW

Milliwatts....

Is this a typo?

Should power a pair of Wilsons.

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Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


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