Marantz CD63 & CD67 mods list

rowemeister said:
Excellent, also good to see another person happy with black gates.

Brent


Must admit I was a little sceptical about the benefits, but I can honestly say the difference was night and day when they went on the opamps. They replaced the 220u Cerafines.

Must admit I did DAC digital CD05, 06 at the same time, so there was some benefit there too.

Definitely a convert now.

Jim
 
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rowemeister said:
I personally like the opamps powered direct with no inductance/resistance. Link them out and see what you think.

If you can leave them out and run wire from the output of the regs direct to the power rails of the opamps or even better fit the regs right next to the opamps for more improvement.

Hi Brent

Just shorted the opamp psu inductors.. Uge gains on leading edge detail and attack... Also got more bass.:spin:

Next I will locate the sregs near the opamps.!!!

This time I had some trouble..... I replaced the ceramic cap C513 0.047 linking pins 15 and 16 of the decoder by a 150uF OsCon.
I believed that a bigger cap should help Vdd1 but I only got screetching sounds from the player :scared:

Can I use a 10uF Oscon there instead ?

Regards

Ricardo