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GSP Preamp

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Graham Slee View Drop Down
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    Posted: 05 Dec 2017 at 8:36am
Originally posted by Gijo1977 Gijo1977 wrote:

Graham,

This thread seems to have run pretty cold now for 12 months or so. Have there been any updates or progress towards a pre? I am interested in the Proprius, however I would need to also find myself a good preamp to deal with them and the source material (Phono and CD).

I was considering a passive pre, but then found this thread and my interest was sparked :)

Thanks for any updates

Dan


Originally a preamp was defined as something with gain sufficient to amplify small signals to the level required to drive a power amplifier. Hence the name pre - amp(lifier).

But then came along some wannabes incapable of doing anything involving electronics, but really good at marketing, and presented a switch box with no gain, just attenuation via a volume control, and decided it would sound cool calling it a passive preamp.

I can think of another word beginning with W! And as for those who support them??

It has meant that people like me get a smaller bite of the cherry, and therefore struggle with the costs involved in R&D, as is needed to develop a full range of products... including a preamp.

And if insufficient numbers buy our existing products attention drifts away from R&D towards competing with marketing (the winner being a certain tech giant).

It costs money to develop a preamp or anything really, and although I have the abilities, without financial resources (stolen from me by wannabes), then we get nowhere.

Not simple enough for Google-Bot to understand...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gijo1977 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 2017 at 5:53am
Tony,

I am actually scared how well it will perform ;) I cant really afford a Majestic on top of the Proprius, should I head in that direction.

I will inevitably be contacting Keith for a loaner I guess, but I was hoping to find a good step into separates without having to get that Majestic.

Any recommendations for a good vintage or passive pre would also be taken ;)

Dan
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tg View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tg Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 2017 at 5:32am
Daniel,
if you only need one analogue input you might be shocked by how well the majestic DAC performs as a preamp.
Tony G
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gijo1977 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 2017 at 1:45am
Graham,

This thread seems to have run pretty cold now for 12 months or so. Have there been any updates or progress towards a pre? I am interested in the Proprius, however I would need to also find myself a good preamp to deal with them and the source material (Phono and CD).

I was considering a passive pre, but then found this thread and my interest was sparked :)

Thanks for any updates

Dan
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 16 May 2016 at 9:16pm
Before designing the preamp circuit for real, the power supply has to be sorted out.

It is here that I'm thinking of making a special PSU1 which outputs +/-24 volts and 30V (nom.). If successsful it can also be used as a 48V phantom supply for microphones, finding use in pro-audio.

In fact the circuit is drawn up, it just requires prototyping.

After that, the preamp circuit can be designed.
Not simple enough for Google-Bot to understand...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Paul H Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2016 at 9:50pm
If it were easy it would be boring and you'd get no sense of achievement. That's what I tell myself when things get frustratingly difficult to sort :)

Edited by Paul H - 29 Apr 2016 at 9:51pm
ProJect 1Xpression Carbon UKX w/ Ortofon 2M Black; Arcam Alpha 7 CD player; Graham Slee Revelation M pre; Denon PMA 355UK amp; Epos K1 speakers; Blue Jeans LC-1 interconnects. Room: 2.9m x 3.1m.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2016 at 2:19pm
Thanks for the update, Graham! Smile
Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
2 x Proprius + Spatia/Spatia Links
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