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Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 7:47 am
by justshoemark
Hi there. Yes I will add some photos later to help.
Many thanks

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 8:34 am
by quickie2
Hi Mark,

The P50 was the same with phono.

Yes, it makes a big difference. I used 4 x 300 va

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 8:56 am
by quickie2
Fretless wrote: Mon Jan 10, 2022 11:55 pm Then this is the back side?

Image

Image

Just photos that I have found online. Don't see a power input here - or an earth for the turntable input.

Could it be that this preamp is all passive and meant to work with an external phono section?
Yes. Before the separate phono stages were released, they were built into the P50/80. When they were, you could buy line only versions like the above.

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 9:37 am
by justshoemark
Thanks quickie2.
So if that's correct and possible. How do I get this done. Would it mean four separate PSU boxes or one with 4 outputs.
Many thanks

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 9:53 am
by quickie2
You could do either, though Richard used 4 separate supplies.

Maybe NVA would do the work for you, but not difficult to DIY if not.

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 9:59 am
by justshoemark
Not sure I could DIY it if I had step by step instructions I may be able to. But depends on cost of parts. But I would like to have it done just to see what it's like.

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 11:19 am
by savvypaul
Until we see the photos of the actual unit, it's all guesswork.

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 11:38 am
by justshoemark
Ok Paul I will get them postage tonight hopefully.

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 1:21 pm
by quickie2
justshoemark wrote: Tue Jan 11, 2022 9:59 am Not sure I could DIY it if I had step by step instructions I may be able to. But depends on cost of parts. But I would like to have it done just to see what it's like.
The LM317/337 voltage regulators are already on the phono board, so you would basically need to buy 4 x transformers (or something custom wound) 4 x bridge rectifiers, and 8 capacitors + case/s

Re: NVA p80 pre with phono stage.

Posted: Tue Jan 11, 2022 1:58 pm
by justshoemark
So not to much then really it just putting it all together.
I'd definitely love to do it.