PM6005, trouble with digital in- output

[Time]

First of all, the PM6005 has a great sound if you ask me! The digital inputs are a very welcoming feature, although there could be 1 or 2 more. Everything What HiFi already reviewed about this amp is true.

BUT...
Only problem we have is that approx. 5 out of 300 cd's have blanc outs (audio cutting out) when using optical or digital coax.
Technical support of Denon& Marantz blame the cd's so far.
But, the dealer, technical support of the dealer and some 'audio-wizards' think different. And so do I!
Thing is that the CD6005 (with exactly the same DAC as the PM6005) shows no problems with the cd's when converting to analogue by itself.
I went back to the dealer and we tried the cd's on a PM6005 in the shop....it gave the same problem! Also the NAD 7050 and Rotel A12 (both with a own DAC) don't show any problems.

Some say it's the DAC of the PM6005 and/or it's powersupply, others think it's the module just before the DAC and a few suggests it has something to do with the re-translation (from SPDIF back to I²S) in the Clock just around the DAC of the PM6005.

Marantz is still working on the subject. As soon as they gave me a sollution, of course, I'll post it.
If so, I'll definitely adjust my ratings on this product.

Anyone familiar with this problem?

 

[Blackdawn]

Hi, what are you using as your source to play the CDs? If its a cd player why not use the standard analogue inputs on the PM6005?

 

[Time]

True, but still de digitals won't work using cd-player. You prolly can imagine that's not why I bought the PM6005

 

[Blackdawn]

Have you tried a PC or Laptop as a source yet via Optical or Coaxial, to compare?

 

[Time]

Have you tried a PC or Laptop as a source yet via Optical or Coaxial, to compare?

yes, no problems do far.

 

[Blackdawn]

Probably best to try a few sources and if the problem only occurs when sending a digital signal from your CD player, then this must be at fault.

 

[Time]

I tried several cdplayers (NAD, Rotel and other type Marantz). Result: analogue, no problem. Digital, same faults.
The fact that other amplifiers with DACs on board didn't have any problems (analogue and digital) remains.

 

[Time]

Should think so, but still no problem occurs on other amplifiers with DAC when playing exact the same cd's.
Also time alignment in Reaper doesn't show any faults on the cd. Even compared to a copy of it, all is the same and faultless:

 

[Time]

Marantz closed the case, they keep blaming the cd's.
They ignore the fact that NAD-7050 and Rotel A-12 don't show any problems when the cd's are played digitally on those amps. And they do not respond to the results Reaper shows when investigating the cd's.
The PM-6005 had some faults if you ask me. Not sure what it is exactly, but one of these options seem possible; weak module, weak Clock or bad translation/conversion SPDIF to I²S when the digital signal enters the amp.
My conclusion is that the PM-6005 isn't as good as its competitor amps because of these errors..

 

[BLAT]

I have PM6005 paired with CD6005. After a year of good service I am now having exactly this problem. Australian distributor has tried all sorts of tests to isolate problem:

- Pairs my CD6005 with non-Marantz amp. No problem.

-Pairs my PM6005 with non-Marantz CD. No problem.

- Has tested my optical interconnect on non-Marantz system. No problem

- Gets brand new CD6005 and PM6005 off the shelf. Skipping, jittering. Same as when pair my CD6005 and PM6005.

- I have also had some skipping when I connect CD6005 to PM6005 via analogue.

Has anyone received a proper answer to this yet from Marantz?

 

[stefanom]

Hi

I have the same combo, PM6005/CD6005.

When using PM6005 DAC, I have experienced skipping/jittering when playing Copy Controlled CDs (EMI label). All other CDs are fine.

There is no problem when I use the DAC (analogue out) of the CD player.