General opinion of 4066 audio switching IC?

Artie · 5th May 2010, 09:07 PM

Hi all. Whats the forums general opinion of the sonic attributes of this "audio switch" IC? Especially older versions. Is this something to be avoided. Is it sonically "neutral"?

soekris · 6th May 2010, 01:15 AM

They're actually pretty good, if used correctly. Their advantage is higher voltage than all the 5V parts and very low capacitance. But the fets inside are pretty unlinear, which is fine as long as they're loaded with minimum 10 Kohm, preferable 100 Kohm or more....

Btw, Quad used them in some of their old preamplifiers, I think either the model 33 or 34.

Soren

Artie · 6th May 2010, 01:21 AM

Thanks Soren. Now I have to rethink whether I want to change them out on this amp. Its an old Kenwood KA-500.

5th May 2010, 09:07 PM	#1
Artie diyAudio Member Join Date: Jul 2007	General opinion of 4066 audio switching IC? Hi all. Whats the forums general opinion of the sonic attributes of this "audio switch" IC? Especially older versions. Is this something to be avoided. Is it sonically "neutral"?

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6th May 2010, 01:15 AM	#2
soekris diyAudio Member Join Date: Jun 2009	They're actually pretty good, if used correctly. Their advantage is higher voltage than all the 5V parts and very low capacitance. But the fets inside are pretty unlinear, which is fine as long as they're loaded with minimum 10 Kohm, preferable 100 Kohm or more.... Btw, Quad used them in some of their old preamplifiers, I think either the model 33 or 34. Soren

6th May 2010, 01:21 AM	#3
Artie diyAudio Member Join Date: Jul 2007	Thanks Soren. Now I have to rethink whether I want to change them out on this amp. Its an old Kenwood KA-500.