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Old 9th April 2012, 03:31 AM   #1
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Question Tube pre-amp for gainclone amp??

Hi all,

My son is interested in making an amplifier to go with speakers that we have built. He wants to have a tube amplifier (because they look cool!), but I am thinking that a gainclone with a tube pre-amp would fit the bill. While he is interested in building audio things, I know from past experience that spending months investigating and experimenting will kill the project.

I have built lots of speakers & a couple of gainclones and kinda understand them, but do not even pretend to understand tube amps. I am looking for a straight forward way of having some fun building an amp with my son. I am interested in any DIY kit, DIY diagram/parts list, or even a Chinese pre-built from eBay, if it will work.

Anyone have some good links or know how to pull this off easily??

Thanks,
Bret
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Old 9th April 2012, 08:08 AM   #2
johnlei is offline johnlei  Philippines
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tube pre-amps could work well on gain clones.. here's a link for you DIY 12AU7 Tube preamp. the circuit is simple and easy to build... just a caution unlike gain-clones, tube projects work on very high voltages, so be careful...
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Old 9th April 2012, 09:07 AM   #3
Puffin is offline Puffin  United Kingdom
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I am sure there are some 12v Tube Pre's around.Have you looked on ebay?

Here's one - might be rubbish

Tube 6N3 Buffer Audio Preamplifier Pre AMP Kit For DIY | eBay

Here's another

http://www.ebay.com/itm/DIY-AMP-Boar...item4ab3da8684

Last edited by Puffin; 9th April 2012 at 09:09 AM.
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Old 9th April 2012, 09:30 PM   #4
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Thanks!

I saw many of those on ebay. While I like to 12V aspect, I am also concerned about the quality of the design...if the components are legit...etc.

Anyone have any experience with these things??

Thnaks,
Bret
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Old 9th April 2012, 09:43 PM   #5
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Thanks!

I really like the clean design & boards! The voltage is a bit of a concern for me, but it is do-able.

Thanks again,
Bret
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Old 9th April 2012, 10:18 PM   #6
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Have a look at

Oatley Electronics

They have a couple of simple valve preamp variations to look at.

Rgds,
el Blakko
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Old 9th April 2012, 10:42 PM   #7
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Depending on budget, you could also look at

6N3 Tube HiFi Buffer Audio Preamplifier - Boards | Kits | Components | Modules | Tools

They have a support forum here at Diyaudio.

Rgds,

the blakktard
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Old 10th April 2012, 07:29 AM   #8
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Default preamp

try these guys! they have lots of support and some really nice designes reasonable price great site...GlassWare Audio Design Software
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Old 12th April 2012, 12:04 AM   #9
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Quote:
Originally Posted by blakkshepeaudio View Post
Depending on budget, you could also look at

6N3 Tube HiFi Buffer Audio Preamplifier - Boards | Kits | Components | Modules | Tools

They have a support forum here at Diyaudio.

Rgds,

the blakktard
thanks--I didn't know they had a support forum here. I'll check that out!
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Old 12th April 2012, 12:13 AM   #10
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Well....my son doesn't like the 'sub-miniature" tubes.

They don't meet the "visual" aspect of the project!

Oh, well.....
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