Tube Output Stage - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st August 2004, 10:48 PM   #1
diyAudio Member
 
Join Date: Aug 2004
Location: Merelbeke
Default Tube Output Stage

Hi Everyone,

As being quite new to the whole diy-scene and this forum in particular, i do hope my maybe stupid questions wuill not play to my disadvantage.

I'm a student in Belgium, owning a NAD CD-player, namely the C521BEE. By reading a lot on the internet, my interest has grown in putting a tube output stage in my player.

My question to you guys is to what my options are and how to implement them. I'v heard about using a Mu-stage or a Differential stage or atransfo or something alike. All ideas Welcome, all help happily accepted, all needed info wille be given with a smile...

greetz,

The Mighty Mouse
  Reply With Quote
Old 24th August 2004, 04:18 AM   #2
diyAudio Senior Member
 
fdegrove's Avatar
 
Join Date: Aug 2002
Location: Belgium
Hi,

Quote:
I'v heard about using a Mu-stage or a Differential stage or atransfo or something alike. All ideas Welcome, all help happily accepted, all needed info wille be given with a smile...
Hmmm...Seems to me half the Benelux owns a NAD CDP they all of a sudden want to add a tubestage to....
Sorry for the sarcasm, I guess it's just a coincidence....

In a nutshell:

If you want to add a tubestage on that player and you already have exhausted most of the other upgrades, especially a new precision clock, go for a simple anode follower using a low to medium tube and adorn it with a very low ripple power supply.
Put your modded CDP close to your preamp and enjoy.

Money no object and low Zout is a must?
Same anode follower put loaded with a dedicated high quality SE OPT.

Forget mu-followers for this application, they won't sound half as good, you'll need two separate heater supplies with dedicated bias in most cases and the added complexity doesn't do the music any good: soulless is the word that comes to mind.

A good idea of what can be done can be found in the "projects" submenu of this site, check the Cdenhancer 3 as it applies to Sigma Delta DACchips as use in the NAD player.

ULTRANALOG...O IRONY.

Please feel free to check other, related threads on the forum here.

Cheers,
__________________
Frank
  Reply With Quote
Old 24th August 2004, 10:40 AM   #3
diyAudio Member
 
Join Date: Aug 2004
Location: Merelbeke
Hey frank,

I opened a similar topic on a Dutch forum, is it that what you mean by half the benelux? Or did you als o get a mail from the same person as me, with the same interest, another belgian student? As far as i know, it's just the two of us (and i do hope there live more than 4 people in the benelux).

Do i have a sigmadeltadac btw?? it's a 20bit dac, that i know. What tubes would you suggest as the better-sounding ones?

Thirdly, i already searched the forum, but i could not find a lot of helpful information, hence the opening of a new topic.

Greetz,

The Mighty Mouse
  Reply With Quote
Old 24th August 2004, 09:08 PM   #4
diyAudio Senior Member
 
fdegrove's Avatar
 
Join Date: Aug 2002
Location: Belgium
Hi,

Quote:
As far as i know, it's just the two of us (and i do hope there live more than 4 people in the benelux).
Well, there's you, another student from Turnhout studying in Ghent, a guy who knows him, a few Dutch guys too....and they all wanted this poor fellow to answer all their questions in just one weekend ....
When I finished with one, the other turned up and so on.

Sure felt like an invasion to me...

Quote:
Do i have a sigmadeltadac btw?? it's a 20bit dac, that i know.
You do.

Quote:
What tubes would you suggest as the better-sounding ones?
You have to look at it this way: what would complement the sound of my CDP best?
IMO the 5687 is a good candidate, there are others but let's stick to this one for now.

Did you check the link I provided in a previous post?

If not, please do.

Cheers,
__________________
Frank
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with PSU for tube DAC output stage luvdunhill Tubes / Valves 1 6th May 2008 10:10 AM
Tube output stage for DAC ackcheng Tubes / Valves 10 14th January 2004 01:13 PM
Tube output stage for DAC ackcheng Digital Source 0 9th January 2004 06:03 PM
dac tube output stage..pls help. tone Tubes / Valves 80 25th March 2003 07:13 PM
need help on tube output stage.. tone Digital Source 2 19th March 2003 05:52 PM


New To Site? Need Help?

All times are GMT. The time now is 03:31 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2