PHONO AMP WITH TRANSISTORS

Feb 03, 2009 6 Replies

Hi I am looking for a PHONO amp circuit based on low noise transistors NOT opamps .



Can you offer a suitable link to that ?



Thanks EC


This should be perfect for you - way over the top !!!

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If you ever build it please let me know if you think it's any good.

Michael Kellett

Wa-a-a-ay over the top! He should have built it with toooobs ;-)

...Jim Thompson

| James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine Sometimes I even put it in the food

On Feb 3, 12:51=A0am, "RealInfo" wrote: > Hi > I am looking for a PHONO amp circuit based on low noise transistors NOT > opamps . >

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The 'signal processor' section lists manuals with schematics of the Hafler products from the 70s and 80s. I still have a DH-101 preamp which has a decent phono preamp - discrete.

G=B2

Many tahnks guys

EC

"Glenn Gundlach" ??? ??????: snipped-for-privacy@v18g2000pro.googlegroups.com... On Feb 3, 12:51 am, "RealInfo" wrote: > Hi > I am looking for a PHONO amp circuit based on low noise transistors NOT > opamps . >

formatting link

The 'signal processor' section lists manuals with schematics of the Hafler products from the 70s and 80s. I still have a DH-101 preamp which has a decent phono preamp - discrete.

Yes i looked. What a piece of crap. Over 10 times too many transistors; all the resistors to support them adds noise. I can beat it in 6 transistors, 4 in a real cost pinch. I do not have any of my old schematics handy, and it is easier to recalculate than to dig. I will fix you up with the base circuit if asked, but you have to calculate all the parts.

Absolutely dead on. "Designed" by someone right out of toooob school ;-)

...Jim Thompson

| James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine Sometimes I even put it in the food

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