Solved?
It happened to me before.
Anyone who use Marantz amp please take note to avoid internet update and use USB update.

Here, keep 1 space in front when key in the serial number

https://firmware.marantz.eu/

i enter my serial number (with 1 space in front). the result only shows a textfile changelog and a pdf instructuion 
Any idea why?

Any Marantz cd player owners compared cd audio quality with bluray player that have analogue out?

How was it? What did you find?

I have 2 BD players, a Panasonic DMP BDT220 and Pioneer BDP-180 but no standalone cd player and I'm curious about the differences in sound quality.

from your experience does the higher sampling rate of bd player and quantitization process you mentioned worsen cd sound quality and is it audible?
which marantz cd player are you using?
thanks for sharing

Any experience with optical cables? I’m using those plastic type RM20+ for 1.5m bought in Aeon. A few articles online say cheap plastic or expensive glass cable no difference, but I’m not sure.

Some time I felt the ESS are 'over' realistic if you know what I meant.. And if paired with bright system, long hours listen is kind of suffering due to too much ajinomoto.

Dear Marantz users , I found these 2 units lying around when doing spring cleaning in my house.

1) Marantz Amp PM7001 with remote
2) Marantz CD Player CD6002 no remote
3)Plus their power cable with the word SUPRA

Any idea on the market price for these 2 used units. Try powering them on and put a cd in and it runs, but no idea of the sound because i dont have any speakers to test.

How much do you guys think i can sell these 2 units. Thanks in advance.

pm7001 not good? how's the bass? i'm looking for bass amp not sure this PM7001 suits me or not, haha.

Lol what's the Marantz sound signature? Always heard this term, was it warmth like tube amp?

A bit like "loudness mode" steroid it seems? haha
You really are "Marantz" keeper! So many Marantz gear you own/owned.

RIP Ken Ishiwata
https://www.whathifi.com/news/ken-ishiwata-...re-dies-aged-72

My last purchase of CD player was in year 2003, a brand new CD17mkIII. I then traded an Electrocomponient EC4.5 pre amp with an CD6000KI. No regret. 17 years had passed now, I bought the CD6004 to answer my curiosity on how modern Dac CS4398 and HDAM-SA2 can do in Marantz mid level CD player. A junior in my hifi system but it is actually an almost 10 years old product by Marantz.

The CD6004 do sound quite different from my other two senior Marantzs. I need to undergo ear running-in before I can conclude differences among three of them (2000 vs 2003 vs 2011). I am glad after ran in (my ear, about a week), now I start to enjoying it. It is dynamic, steady and confident. A little dark, quiet and dense. Solid with good body. Good depth and width too. It play complex music with ease without throwing everything out, eg, soundtrack of Lord of the Ring, Tittanic. The swing is good. Sudden puase between note do with confident without hesitation, eg JB project, Woods albums. The other two players however excel in more relax, harmonious and growing decay with more air around. I thought the CD6004 might sound too dark but turn out it able to attract good amount of air around voices and instrument from albums, eg, Rikie Lee Jones Pop pop, Diana Krall Turn up the Quiet. The vocal got very good presence up there, meaty, thick and sweet with nice detail like throat noise. The high is just nice to my liking detail extended when called for without brightness and sharpness. Vocal without artificial sibilance. A nice player for classical music too because it play loud with excellent dynamic, grip and control. Overall, I am happy

I thought pure direct mode is ultimate audiophile junkies heaven, no?