Simple RIAA phono preamps

Optical · 19th November 2002, 05:52 AM

What about (very) simple designs which achieve worthy results? Are these worth bothering with?

What sort of designs do modern DJ gear manufacurers use? This is a big market, are they going simple or complex in their designs?

peranders · 19th November 2002, 06:49 AM

95% (or 99%!) of all RIAA amps are simple. You have to go over 300 USD in order to get higher "techology". Most RIAA amps consists of a NE5532/34 or a 4556 plus a few passive components.

Check for instance NAD PP-1 and MTech, not cheap, very simple.

The vinyl market is rather limited these days and has no future (like tubes).

planet10 · 19th November 2002, 07:10 AM

More complex than the ones peranders pointed out, but cheap.

http://www.hagtech.com/bugle.html

dave

peranders · 19th November 2002, 07:38 AM

Quote:

Originally posted by planet10
More complex than the ones peranders pointed out, but cheap.
http://www.hagtech.com/bugle.html

This was a new one, never seen it. Very beautiful, but batteries....

16 hours at 4-6 USD (in Sweden), expensive but rechargable batteries are an alternative.

Rather high noise though (but lower than the vinyl itself).

I wonder if the gain is for 1 kHz?

http://www.hagtech.com/trumpet.html

Cool!

planet10 · 19th November 2002, 07:42 AM

Quote:

Originally posted by peranders
This was a new one, never seen it. Very beautiful, but batteries....

16 hours at 4-6 USD (in Sweden), expensive but rechargable batteries are an alternative.

He does mention adding a normal power supply... which is what i would do.

dave

peranders · 19th November 2002, 07:47 AM

I think that Hagtech is an exception, most RIAA amps are high priced and low tech. Under 100 USD = junk (more or less).

GrantB · 19th November 2002, 07:52 AM

DJ mixers invariably use a simple phono preamp design. Check out the schematics on www.rane.com

Cobra2 · 19th November 2002, 08:11 AM

Hi!
I have built the bugle, and IMHO, it is a "Black Cube Killer".
(I had a "Cube", witch now is sold...).

My version: See picture

Arne Karlsen
NORWAY

peranders · 19th November 2002, 08:43 AM

Quote:

Originally posted by Cobra2
I have built the bugle, and IMHO, it is a "Black Cube Killer".
(I had a "Cube", witch now is sold...).

Nice, I like the front panel! I see also that you thought batteries were too expensive (or messy). Do you have the schematics of the amp? Curious as always.

UrSv · 19th November 2002, 08:56 AM

Arne,

Is that one of the chassis from Taiwan (I think) I remember you bought, I think?

/UrSv

19th November 2002, 05:52 AM	#1
Optical diyAudio Member Join Date: Nov 2002 Location: Auckland, New Zealand	Simple RIAA phono preamps What about (very) simple designs which achieve worthy results? Are these worth bothering with? What sort of designs do modern DJ gear manufacurers use? This is a big market, are they going simple or complex in their designs?

19th November 2002, 06:49 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	95% (or 99%!) of all RIAA amps are simple. You have to go over 300 USD in order to get higher "techology". Most RIAA amps consists of a NE5532/34 or a 4556 plus a few passive components. Check for instance NAD PP-1 and MTech, not cheap, very simple. The vinyl market is rather limited these days and has no future (like tubes). __________________ /Per-Anders (my first name) or P-A as my friends call me

19th November 2002, 07:10 AM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Re: Simple RIAA phono preamps More complex than the ones peranders pointed out, but cheap. http://www.hagtech.com/bugle.html dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

19th November 2002, 07:47 AM	#6
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I think that Hagtech is an exception, most RIAA amps are high priced and low tech. Under 100 USD = junk (more or less). __________________ /Per-Anders (my first name) or P-A as my friends call me

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19th November 2002, 07:52 AM	#7
GrantB diyAudio Member Join Date: Mar 2002 Location: Seattle	DJ mixers invariably use a simple phono preamp design. Check out the schematics on www.rane.com

19th November 2002, 08:56 AM	#10
UrSv diyAudio Member Join Date: Jan 2002 Location: Sweden	Arne, Is that one of the chassis from Taiwan (I think) I remember you bought, I think? /UrSv

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