Burr-Brown PGA2311, stepped resistor attenuator

Miller-8 · 30th October 2007, 05:42 PM

Anyone any opinions of the use of these things in amps? They take the place of a normal volume pot I believe, was wondering if they offer good sound quality and if there's any negatives to them?

I'm thinking of buying a Creek EVO amp and noticed it used one of these Burr-Brown chips.

analog_sa · 30th October 2007, 06:11 PM

And you did search before posting, right?

Miller-8 · 30th October 2007, 06:21 PM

Yes I did. Did not see anything specifically saying how good it is compared to, say, an alps bue.

jaycee · 30th October 2007, 06:27 PM

You will get people who will say that they are fine, and purists who will insist the pots are better. Practically, I think as long as the design is careful to keep the digital and analogue signals seperate (which is easy to do thanks to the pinout of this chip), there won't be much, if any difference.

Miller-8 · 30th October 2007, 06:38 PM

Thanks. Think I'm probably going to buy an EVO

Rambi · 30th October 2007, 06:44 PM

Quote:

Originally posted by Miller-8
Thanks. Think I'm probably going to buy an EVO

I tried a simple circuit with a PGA some time ago (with separate digital/analogue) but I wasn't really impressed with the sound (a bit 'dull' for lack of a better description).

But since you're buying, not building, why not just have a listen yourself?

30th October 2007, 05:42 PM	#1
Miller-8 diyAudio Member Join Date: May 2004 Location: Edinburgh	Burr-Brown PGA2311, stepped resistor attenuator Anyone any opinions of the use of these things in amps? They take the place of a normal volume pot I believe, was wondering if they offer good sound quality and if there's any negatives to them? I'm thinking of buying a Creek EVO amp and noticed it used one of these Burr-Brown chips.

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30th October 2007, 06:11 PM	#2
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	And you did search before posting, right?

30th October 2007, 06:21 PM	#3
Miller-8 diyAudio Member Join Date: May 2004 Location: Edinburgh	Yes I did. Did not see anything specifically saying how good it is compared to, say, an alps bue.

30th October 2007, 06:27 PM	#4
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	You will get people who will say that they are fine, and purists who will insist the pots are better. Practically, I think as long as the design is careful to keep the digital and analogue signals seperate (which is easy to do thanks to the pinout of this chip), there won't be much, if any difference.

30th October 2007, 06:38 PM	#5
Miller-8 diyAudio Member Join Date: May 2004 Location: Edinburgh	Thanks. Think I'm probably going to buy an EVO

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