Pass D124/96 with PCM1704K??

spzzzzkt · 28th December 2008, 10:11 AM

I came across an old post from 2003 at Audiogon ( http://forum.audiogon.com/cgi-bin/fr...gtl&1063887965 ) which said:

"I think it sounds so good because of the unique D/A stage designed by Wayne Colburn at Pass. Does yours have the 24/96 upgrade? If not, you may want to look into it. Wayne replaces the four Burr-Brown PCM64K Dacs with eight(!) Burr-Brown PCM 1704K Dacs as well as some other changes."

The conventional wisdom is that the D1 is a PCM63 based dac and the 24/96 was a reciever board only upgrade, so I'm curious if the 24/96 D1's left the factory with PCM1704K installed?

Paul

hifimaker · 28th December 2008, 05:20 PM

There was only a receiver board upgrade. I don't recall any change of DAC chips. Both chips are R2R types, but with different packages and pinouts.

-David

spzzzzkt · 31st December 2008, 04:30 AM

Quote:

Originally posted by dw8083
There was only a receiver board upgrade.

The information on Audigon is actually correct. Wayne Colburn confirmed that for the standard 24/96 upgrade each PCM63P-K was replaced by a paralleled pair of PCM1704.

28th December 2008, 10:11 AM	#1
spzzzzkt diyAudio Member Join Date: May 2005 Location: Melbourne	Pass D124/96 with PCM1704K?? I came across an old post from 2003 at Audiogon ( http://forum.audiogon.com/cgi-bin/fr...gtl&1063887965 ) which said: "I think it sounds so good because of the unique D/A stage designed by Wayne Colburn at Pass. Does yours have the 24/96 upgrade? If not, you may want to look into it. Wayne replaces the four Burr-Brown PCM64K Dacs with eight(!) Burr-Brown PCM 1704K Dacs as well as some other changes." The conventional wisdom is that the D1 is a PCM63 based dac and the 24/96 was a reciever board only upgrade, so I'm curious if the 24/96 D1's left the factory with PCM1704K installed? Paul

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28th December 2008, 05:20 PM	#2
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	There was only a receiver board upgrade. I don't recall any change of DAC chips. Both chips are R2R types, but with different packages and pinouts. -David

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