GC/RIAA (simple) preamplifer

veteran · 22nd May 2006, 06:38 PM

This is development of my simple GC preamplifier that I made some time ago. Now it's two, or even three in one

Preamplifier
Just a simple preamplifer using single op-amp.

RIAA preamplifeir
Basic preamplifer updated with few components working as a RIAA correction. This section is basing on VSPS preamplifier (great work RJM!). When it's made as dual mono - second board can work as another gain stage in this PRE or output buffer. This should bring to live my analog

Supply
Simple supply. Two fixed voltage regulators + CRC filter.

VT67 · 22nd May 2006, 06:49 PM

Veteran

You got my attention on this one!!
Keep us posted on the further development.

Regards

veteran · 23rd May 2006, 02:34 PM

Preamplifier is working. No hum or any other 'special effects'. Picture below show this board in standard, stereo configuration.

documentation

es44 · 23rd May 2006, 04:12 PM

Now we only need to know where to get boards

Nice layout, looks handy.

best regards
Ebbe

veteran · 23rd May 2006, 06:40 PM

PCB is quite small and locating another channel like a sandwich makes it even smaller

I have got about 5 gold plated sets that I don't need, so if You are interested...

VT67 · 23rd May 2006, 06:47 PM

Yes please!!

Regards

tschrama · 23rd May 2006, 07:24 PM

Hi

Those look great!

RIAA preamp boards too .. ?

I'm taking a stereo set then please!

grzz,
Thijs Schrama

es44 · 23rd May 2006, 08:32 PM

I would be very happy for a set too. Looks like the perfect companion for my GC and record player

Will send PM

matjans · 23rd May 2006, 11:06 PM

hey guys,

Looks very nice! If you have any boards left, i'd very much like a stereo set! My implementation of the vsps is somewhat buggy (a little humm and some hiss).

No wonder, I hacked it together pretty quickly on veroboard with a psu i had lying around.

I'll send you an email.

JesseG · 24th May 2006, 04:23 AM

Quote:

I have got about 5 gold plated sets that I don't need, so if You are interested...

I would very much like to obtain a set as well (hope I'm not too late).

Jess

22nd May 2006, 06:38 PM	#1
veteran diyAudio Member Join Date: Feb 2004 Location: Poland	GC/RIAA (simple) preamplifer This is development of my simple GC preamplifier that I made some time ago. Now it's two, or even three in one Preamplifier Just a simple preamplifer using single op-amp. RIAA preamplifeir Basic preamplifer updated with few components working as a RIAA correction. This section is basing on VSPS preamplifier (great work RJM!). When it's made as dual mono - second board can work as another gain stage in this PRE or output buffer. This should bring to live my analog Supply Simple supply. Two fixed voltage regulators + CRC filter. __________________ Simple audio solutions blog.unisonus.com

22nd May 2006, 06:49 PM	#2
VT67 diyAudio Member Join Date: Jun 2004 Location: Belgium	Veteran You got my attention on this one!! Keep us posted on the further development. Regards __________________ VBITNGC Krell KSA-50 Krell KSA-100MkII

23rd May 2006, 02:34 PM	#3
veteran diyAudio Member Join Date: Feb 2004 Location: Poland	Preamplifier is working. No hum or any other 'special effects'. Picture below show this board in standard, stereo configuration. documentation __________________ Simple audio solutions blog.unisonus.com

23rd May 2006, 06:40 PM	#5
veteran diyAudio Member Join Date: Feb 2004 Location: Poland	PCB is quite small and locating another channel like a sandwich makes it even smaller I have got about 5 gold plated sets that I don't need, so if You are interested... __________________ Simple audio solutions blog.unisonus.com

23rd May 2006, 06:47 PM	#6
VT67 diyAudio Member Join Date: Jun 2004 Location: Belgium	Yes please!! Regards __________________ VBITNGC Krell KSA-50 Krell KSA-100MkII


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23rd May 2006, 04:12 PM	#4
es44 diyAudio Member Join Date: Apr 2005 Location: Fredericia, DK	Now we only need to know where to get boards Nice layout, looks handy. best regards Ebbe

23rd May 2006, 07:24 PM	#7
tschrama diyAudio Member Join Date: Jul 2001 Location: The Netherlands	Hi Those look great! RIAA preamp boards too .. ? I'm taking a stereo set then please! grzz, Thijs Schrama

23rd May 2006, 08:32 PM	#8
es44 diyAudio Member Join Date: Apr 2005 Location: Fredericia, DK	I would be very happy for a set too. Looks like the perfect companion for my GC and record player Will send PM

23rd May 2006, 11:06 PM	#9
matjans diyAudio Member Join Date: Aug 2003 Location: Utrecht, NL	hey guys, Looks very nice! If you have any boards left, i'd very much like a stereo set! My implementation of the vsps is somewhat buggy (a little humm and some hiss). No wonder, I hacked it together pretty quickly on veroboard with a psu i had lying around. I'll send you an email. __________________ Si fractum non sit, noli id reficere!

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