Solid State Phono Pre-Amplifier with RIAA LCR Network - Overview wanted

[tiefbassuebertr]

There are a lot of tube Preamplifiers with LCR RIAA network - for examples go to
VinylSavor: The D3a Phono Stages
VinylSavor: Making of a D3a LCR RIAA Phono Preamp - Part 2
VinylSavor: Making of a EC8020 LCR Phono Preamplifier, Part 2: Wiring
TWOGOODEARS - トゥーグッドイアーズ: A (short) phono-stages survey: LCR vs. LCR - Thomas Mayer 437A and ALLNIC H-3000
Remton LCR MK2 tube phono stage | Simply Audio

But transistorized versions or such with operational amplifiers seems to be very rare. Aurorasound's vinyl disc amplifier (VIDA) from "Confoederatio Helvetica" is an example:
https://highend-electronics.com/products/aurorasound-vida-vinyl-disk-amplifier
https://web.archive.org/web/2016042...e.com/astrablog/aurorasound-vida-phono-stage/
https://audioleman.ch/shop/vida-lcr-riaa-phono-stage/
http://www.puresound.info/id15.html
Are there some other both commercial devices and diy projects in this kind ?
Thank you for your advices.

 

[67339]

Hello,
There was one described in the French magazine called l'audiophile NR 39 autumn 1986.
I think it was also discussed later on but i have to check.
Greetings, Eduard
Magazine can be found online

 

[67339]

missing link

Préampli phono à correction passive LCR (J.Hiraga)
On en parle n°41: kits Tannoy, tansfo pour némésis, circuit protection hp, FE103 en colonne, correction LCR pour pré Kanéda ....
scroll down and you will see

 

[tiefbassuebertr]

URL dead.
this are links for currently use:
Préampli phono à correction passive LCR (J.Hiraga)
(l' Audiophile n° 39 autumn 1986)
On en parle ndeg41: kits Tannoy, tansfo pour nemesis, circuit protection hp, FE103 en colonne, correction LCR pour pre Kaneda ....
(l' Audiophile n° 41 autumn 1987)
any news concerning new commercial available RIAA pre-amp devices with LCR network ?

 

[NareshBrd]

I made one with a TL072, worked nicely.
Can use 5532 also.
Kits in India from about $4 plus shipping.

 

[NareshBrd]

View attachment Rolls Corp. Pre Amp.pdf








All copyrights are with the creators, I just downloaded them, and posted here to save others the effort.

 

[NareshBrd]

The .pdf is similar...and some how not uploaded.


The last one has RIAA network, can use any decent audio op amp as mentioned above....5532, TL072, OPA2134 etc.

The above should give enough ideas to you

 

[analog_sa]

Built one with opamps a few years ago. Used Lundahl iron. It was easy to compare RC vs LR vs LCR in the same setup. LCR won by a significant margin and is by far the best opamp riaa i have ever heard. In many respects it sounds better to me than all my valve attempts. Individual shunt regs for each opamp, but nothing else that is special. No coupling caps by virtue of low offset opamps. The Lundahl parts, perhaps unsurprisingly, were way off their stated values, so resistors had to be tweaked but in the end got about 0.2db accuracy.

 

[NareshBrd]

Try old motherboard coils?
My posts above are RC circuits.

 

[analog_sa]

I did try UTC VIC9/VIC11 permalloy variable inductance chokes in place of the Lundahl parts. If one is truly desperate these can be used but they're obviously inferior to Lundahl.

Naresh, why all the spam mate?

 

[tiefbassuebertr]

Lundahl Inductors for LCR (page 3):
6moons audioreviews: Aurorasound Vida
6moons audioreviews: Aurorasound Vida
6moons audioreviews: Aurorasound Vida
6moons audioreviews: LessLoss Firewall

 

[NareshBrd]

Sorry, what spam?
When I was planning a phono pre amp. I had downloaded these, they were in storage on my computer.
To save others the trouble I put them up, then I realized that these were without coils.
I did say that I have no connection with the designers, so how would I gain by posting these circuits?
Spam is done with some gain in mind, monetary or otherwise.
I did post something not quite relevant, that is all.
And I did suggest a source for the coils, which can be a problem to find.


Once again, apologies for any offence caused...