Philips CD711: changing the op-amp

starbase218 · 19th June 2003, 03:49 PM

I read on the internet that the CD721 is a good CD player, that becomes even better when certain modifications are applied. One of these mods is replacing the 4560 op-amp with an AD826. I have a CD711 (the 721 without a remote - I wish I had spent the extra money

), and I intend to replace the op-amp. But the website didn't provide any further info about it. So my question is, can I directly replace the op-amp without modding anything else, or do I need to change other components as well? And how can I best desolder the existing op-amp?

I already replaced the standard fixed signal cable with a Van den Hul cable (and added gold-plated cinch sockets), and I was quite surprised by the improved sound quality. I hope the op-amp mod will make a similar difference

.

starbase218 · 8th July 2003, 09:19 PM

Nobody?

jkeny · 8th July 2003, 11:41 PM

If the CD721 is the same or similar to CD723 (Marantz CD4000 also) the you will find all the info needed at
http://www.decdun.fsnet.co.uk/project.html

Regards
John

19th June 2003, 03:49 PM	#1
starbase218 diyAudio Member Join Date: Jun 2003 Location: The Netherlands	Philips CD711: changing the op-amp I read on the internet that the CD721 is a good CD player, that becomes even better when certain modifications are applied. One of these mods is replacing the 4560 op-amp with an AD826. I have a CD711 (the 721 without a remote - I wish I had spent the extra money ), and I intend to replace the op-amp. But the website didn't provide any further info about it. So my question is, can I directly replace the op-amp without modding anything else, or do I need to change other components as well? And how can I best desolder the existing op-amp? I already replaced the standard fixed signal cable with a Van den Hul cable (and added gold-plated cinch sockets), and I was quite surprised by the improved sound quality. I hope the op-amp mod will make a similar difference .

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8th July 2003, 09:19 PM	#2
starbase218 diyAudio Member Join Date: Jun 2003 Location: The Netherlands	Nobody?

8th July 2003, 11:41 PM	#3
jkeny Banned Join Date: Feb 2007 Location: Dublin	If the CD721 is the same or similar to CD723 (Marantz CD4000 also) the you will find all the info needed at http://www.decdun.fsnet.co.uk/project.html Regards John

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