Can the Shanling CD-T80 be used sans valves?

johnm · 2nd October 2008, 02:48 PM

Hi folks!

I'm currently using - and very much have a ball listening to - my Shanling CD-T80 with Peter Daniel's amazing NOS DAC.

Obviously as I am not using the analogue outputs in the CD-T80 any longer the output valves are just being wasted.

Is it OK/safe to take the valves out, and just have the unit running as-is and using the digital out, or will I damage anything by running it without valves?

Cheers,

- John

kevinkr · 3rd October 2008, 05:10 PM

Unless you have a schematic and service information I would just leave them in place, it is possible although not likely that removing them will result in higher than intended HV supply voltages which could result in overstressing caps in the supply and the output coupling caps. It is probably not an issue, but if you are concerned about wasting good tubes just stick a known good cheap pair of the same type in the player.

johnm · 27th November 2008, 10:45 PM

Thanks for your reply Kevin - no circuit diagram alas and can't seem to find one, so best leave everything in place I guess.

Cheers

Zen Mod · 28th November 2008, 12:35 AM

maybe this will help:

http://www.diyaudio.com/forums/showt...12#post1620712

2nd October 2008, 02:48 PM	#1
johnm diyAudio Member Join Date: Sep 2003 Location: Hampshire	Can the Shanling CD-T80 be used sans valves? Hi folks! I'm currently using - and very much have a ball listening to - my Shanling CD-T80 with Peter Daniel's amazing NOS DAC. Obviously as I am not using the analogue outputs in the CD-T80 any longer the output valves are just being wasted. Is it OK/safe to take the valves out, and just have the unit running as-is and using the digital out, or will I damage anything by running it without valves? Cheers, - John

3rd October 2008, 05:10 PM	#2
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Unless you have a schematic and service information I would just leave them in place, it is possible although not likely that removing them will result in higher than intended HV supply voltages which could result in overstressing caps in the supply and the output coupling caps. It is probably not an issue, but if you are concerned about wasting good tubes just stick a known good cheap pair of the same type in the player. __________________ www.kta-hifi.net

28th November 2008, 12:35 AM	#4
Zen Mod Official Court Jester diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	maybe this will help: http://www.diyaudio.com/forums/showt...12#post1620712 __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery

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27th November 2008, 10:45 PM	#3
johnm diyAudio Member Join Date: Sep 2003 Location: Hampshire	Thanks for your reply Kevin - no circuit diagram alas and can't seem to find one, so best leave everything in place I guess. Cheers

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