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stoolpigeon 7th July 2007 10:05 AM

Russ Andrews voltage reg
 
Some years I heard a Naim preamp which had been upgraded with a Russ Andrews voltage regulator. I heard before and after and there was quite an improvement in sound quality.

I am now looking at all the different regulators around and wondering if this RA design is still available somewhere. I could be wrong but I think the designer was Paul .......

Anyone remember?

Was there a HV version for tubes?

Greg Erskine 7th July 2007 10:08 AM

Hi stoolpigeon,

This forum might have the information. Lots of Naim and regulators threads:

http://www.pinkfishmedia.net/forum/forumdisplay.php?f=8

regards

tinitus 7th July 2007 12:18 PM

2 Attachment(s)
Neat little "aussie" thingie

http://www.bursonaudio.com/Burson_Super_Regulator.htm

carlmart 7th July 2007 12:34 PM

Re: Russ Andrews voltage reg
 
Quote:

Originally posted by stoolpigeon
Some years I heard a Naim preamp which had been upgraded with a Russ Andrews voltage regulator. I heard before and after and there was quite an improvement in sound quality.

I am now looking at all the different regulators around and wondering if this RA design is still available somewhere. I could be wrong but I think the designer was Paul .......

Anyone remember?

Was there a HV version for tubes?

Do you remember what time that was? Was it IC or discrete? What have you tried and like/didn't like?

What Paul... do you talk about?

stoolpigeon 7th July 2007 02:09 PM

I am trying to remember some details.

It was mid 1990's I heard this preamp and I know Russ Andrews had quite a range of parts and upgrades.

The reg was discrete and there were at least 2 versions. I think the more expensive was around 100 UK pounds.

The sound of the upgraded Naim, which isn't one of my favourites, was much less in your face and more 3 dimensional than standard.

At the time RA was introducing a range of amps and speakers and I think the amp designer did the voltage reg as well. Interesting speakers with a large woofer and very efficient.

I'm sure some of the UK members will know what I'm talking about!

martin clark 7th July 2007 02:21 PM

Sorry I don't recall that particular item, though Russ has been offering a SMPS-based little PSU for Naim preamps recently.

There's quite a bit of stuff on PSUs and modding Naim generally gathered on my little site if it helps though: www.acoustica.org.uk

Geoff 7th July 2007 05:00 PM

Re: Russ Andrews voltage reg
 
Quote:

Originally posted by stoolpigeon
........ I could be wrong but I think the designer was Paul .......

Anyone remember?

The designer was Paul Hynes. See the following website for his latest offerings:

http://www.paulhynesdesign.com/


Quote:

Was there a HV version for tubes?
Yes there was. If you are interested, email me and I will send you a scan of the appropriate page from the 1995/6 RA catalogue (not that it gives much in the way of details about the regulator itself).

stoolpigeon 8th July 2007 08:19 AM

Thanks Geoff, that seems to be him, but unfortunately no circuit details.

Can anyone tell the basics of the design from the photos? A variation of the Jung/Diddens type?

I know there are plenty of reg designs around but this one I remember as providing a fairly obvious improvement rather than just sounding different.

analog_sa 8th July 2007 08:43 AM

This is quite amusing. Apparently a market niche exists where tweakers are eager to support higher profit margins than those in high end audiophile equipment :)

Are tweakers more gullible than ordinary audiophiles?

Nordic 8th July 2007 09:43 AM

...more desperate.


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