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Old 28th May 2010, 07:31 PM   #1
Ianmac is offline Ianmac  Scotland
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Default Balanced/unbal ip/attenuator /Bal out pre

I am looking for a schematic and PCB for a Pre amp that will accept balanced or unbalanced inputs, have a gain control or attenuator and provide balanced output.
I have found one that could be tweaked to suit my exact requirements on a website by Shine7 Audio DIY Page but there are no links to PCB supply, indeed the site seems defunct.
Before I spend many more hours trawling the web does any one know of Shine7 ? have they been and gone?

Or does anyone know of an alternative quality pre amp that satisfies my spec where I can buy PCB's to populate myself.

Ianmac
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Old 29th May 2010, 02:14 AM   #2
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How about the Aleph P1.7. PCBs are available.
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Old 29th May 2010, 04:28 AM   #3
Ianmac is offline Ianmac  Scotland
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Thanks Bill
I'll check it out

Ianmac
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Old 5th June 2010, 07:58 AM   #4
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Quote:
Originally Posted by Bill Fuss View Post
How about the Aleph P1.7. PCBs are available.
Got a link for me please?
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Old 5th June 2010, 10:38 AM   #5
Ianmac is offline Ianmac  Scotland
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Brett so far I have not found anyone who has current stock of Aleph PCB's.
I searched Aleph on the forum and went from there.

Ianmac
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Old 5th June 2010, 10:58 AM   #6
SY is offline SY  United States
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Quote:
Originally Posted by Ianmac View Post
I am looking for a schematic and PCB for a Pre amp that will accept balanced or unbalanced inputs, have a gain control or attenuator and provide balanced output.
If tubes are acceptable, you might contact Jack Walton at tech-diy.com to see if he has any ImPasse boards left.
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Old 7th June 2010, 05:28 AM   #7
Ianmac is offline Ianmac  Scotland
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Brett,
Bill very kindly sent me this link
www.kk-pcb.com

Thanks for your help Bill
Ianmac
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Old 30th June 2010, 02:53 PM   #8
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Very expensive PCB's hmm. I'm looking for a preamp that'll do bal and se as well. The Aleph seems to fit the bill, but 49 euro's for one PCB is quite high.
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Old 1st July 2010, 08:40 AM   #9
Ianmac is offline Ianmac  Scotland
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Yes its almost 50 per PCB if you can get them. Ive had no replies to any emails.

The only other options I found were RelaiXed -- Balanced pre-amplifier but PCB's are no longer available. A redesign is in progress and should be available later this year.
And DIY audio balanced preamp who seem to have dissapeared

Personally I liked the Aleph design.

Ianmac
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Old 1st July 2010, 01:09 PM   #10
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When I bought mine KK had NP's blessing, and I received the PS boards with the main board at no charge. I don't know if this is still true. The boards are stereo so you only need one. I've had mine for about 4 yrs and have tried others but always return to the Aleph P. It is deathly silent and transparent. If you like tube preamps you will probably not like it except for being able to try different coupling caps to suit your ears.

There is another version made by Veteran still floating around. You might try posting a Wanted in the Trading Post forum.
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