Which grade is the PCM63P placed on RCD 991?

Staykov · 18th December 2007, 07:37 PM

Which grade is the PCM63P DAC's placed on RCD 991?
Is the same DAC's in ROTEL RCD 971?
There isn't mark on DAC's in my old RCD 971.
Now I'm ready to upgrade with RCD991.

Nanook · 19th December 2007, 07:31 AM

I don't know anything about the Rotel player, but did find a site that indicated 971=pcm63, 991=pcm63k

look here
for the data sheets. As far as I can recall the only difference is the operating temperature range

xtaltech · 19th December 2007, 04:06 PM

If you do not see the letter "J" or "K" as a suffix to the part number, nor they can be found anywhere on the top, then the DAC must be a basic version.

Hope this helps.

OneyedK · 19th December 2007, 05:28 PM

Quote:

Originally posted by Nanook
I don't know anything about the Rotel player, but did find a site that indicated 971=pcm63, 991=pcm63k

look here
for the data sheets. As far as I can recall the only difference is the operating temperature range

http://focus.ti.com/lit/ds/symlink/pcm63.pdf
--> look at the table on page 3

Max THD+N at 0dB
PCM63P : -88dB
PCM63P-J : -92dB
PCM63P-K : -96dB

Unless Rotel wiped the markings, you should be able to read the exact type printed on the chip.

Staykov · 19th December 2007, 05:33 PM

Yes, I know, but I'm still waiting my new RCD 991 and need some info in advance from the owners of RCD 991.
Is there a chance to find information in the service manual?
I'm looking for the schematics / service manual ROTEL RCD 991.
Anyone? please.
My e-mail is Staykov1975@abv.bg

Staykov · 22nd December 2007, 08:07 PM

I'm looking for the schematics / service manual ROTEL RCD 991.
Anyone? please.
My e-mail is Staykov1975@abv.bg

flshzug · 28th December 2007, 11:45 AM

all dac should be matched trimmed , so if you have 50 pcm63 non-k thats better than 10 of K-s for the job .

Staykov · 30th December 2007, 06:25 PM

I prefer 2xPCM63p-k
PCM63P-K : -96dB>PCM63P : -88dB

Staykov · 25th September 2008, 08:43 PM

There isn't grade on DAC in RCD 991, but they are better than DAC in 971. I change them(from 991 to 971) and there is difference between.

18th December 2007, 07:37 PM	#1
Staykov diyAudio Member Join Date: Apr 2007	Which grade is the PCM63P placed on RCD 991? Which grade is the PCM63P DAC's placed on RCD 991? Is the same DAC's in ROTEL RCD 971? There isn't mark on DAC's in my old RCD 971. Now I'm ready to upgrade with RCD991.

19th December 2007, 07:31 AM	#2
Nanook diyAudio Member Join Date: Feb 2004 Location: Chinook Country.Alberta	971 vs. 991 I don't know anything about the Rotel player, but did find a site that indicated 971=pcm63, 991=pcm63k look here for the data sheets. As far as I can recall the only difference is the operating temperature range __________________ stew ☮ -"A sane man in an insane world appears insane."

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19th December 2007, 04:06 PM	#3
xtaltech diyAudio Member Join Date: May 2004 Location: the Constitution State	If you do not see the letter "J" or "K" as a suffix to the part number, nor they can be found anywhere on the top, then the DAC must be a basic version. Hope this helps.

19th December 2007, 05:33 PM	#5
Staykov diyAudio Member Join Date: Apr 2007	Yes, I know, but I'm still waiting my new RCD 991 and need some info in advance from the owners of RCD 991. Is there a chance to find information in the service manual? I'm looking for the schematics / service manual ROTEL RCD 991. Anyone? please. My e-mail is Staykov1975@abv.bg

22nd December 2007, 08:07 PM	#6
Staykov diyAudio Member Join Date: Apr 2007	I'm looking for the schematics / service manual ROTEL RCD 991. Anyone? please. My e-mail is Staykov1975@abv.bg

28th December 2007, 11:45 AM	#7
flshzug Banned Join Date: Dec 2007	all dac should be matched trimmed , so if you have 50 pcm63 non-k thats better than 10 of K-s for the job .

30th December 2007, 06:25 PM	#8
Staykov diyAudio Member Join Date: Apr 2007	I prefer 2xPCM63p-k PCM63P-K : -96dB>PCM63P : -88dB

25th September 2008, 08:43 PM	#9
Staykov diyAudio Member Join Date: Apr 2007	There isn't grade on DAC in RCD 991, but they are better than DAC in 971. I change them(from 991 to 971) and there is difference between.

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