Keph, i confuse your custom version of 339 with the Rosenkavalier, can you provide some review & infomation on them, any information on them will be helpful, i own a LF339 for almost 3 months now & i was looking to upgrade them. TQ

tube amp shouldn't connect with the earphones when you take of the tubes. If the tube working not properly please turn off the machine. If the tube working good you can plug the earphones after a few minutes
 

I just bought this amp and am eagerly waiting for shipment! I cannot wait and already bought some tubes, rca 6AS7G and tlfnkn EF800.
They are going to power the HD650, really cannot wait!
 
I have a very solid state speaker set, so clean and smooth they are a pair of Meridian DSP3100 and DSP3100HC center speaker. Merdian have that unique DSP called Trifield, which replicates the early days of stereophony using 3 speakers. That way you don't have to sit and face straight to the center of your pair of speaker, because the stereo image is distributed to the 3 speakers.
 
I wanted something fancy and always liked tubes (just don't like the price and size of them for big speaker and big power am). I have a full tube guitar amp and that is the only way to go if you are a guitarist like myself.
 
Anyway I really needed a headphone/amp set cause neighbors aren't deaf and I like to listen to music anytime of the day or the night.
I read the whole thread so I know I have to look at both GEC 6AS7G and TS 5998, but it's going to wait a little longer when the price settles down and or I find a good deal on those.
 
For what I read I should be pretty satisfied with the RCA6AS7G.But may I ask if anyone did a tube ranking about what's best to drive them? Telefunken 800 I have bought them already, I want the red RCA tubes when I find a deal but I want a glowing tube not a metal cap. Call me crazy but I also love the looks of tubes burning. Any advices?
 

Quote:

telecaster said:

I just bought this amp and am eagerly waiting for shipment! I cannot wait and already bought some tubes, rca 6AS7G and tlfnkn EF800.
They are going to power the HD650, really cannot wait!

Click to expand...

 
You will love this combo, it sounds great!
About the tubes, I gathered this when I read through the whole thread:
 
Amp Tubes (Little Outside Ones), in order of sound quality:

 
EF800 from Telefunken (with converter)

EF80s from Telefunken & other brands (with converter)

6AC7s from GE

6SJ7s (both metal & glasstop) from RCA, Mullard, NEC etc.

Stock WF80/EF80 Tubes

Stock Russian 6*4 Tubes

 

Driver Tubes (Big Middle Two Tubes), in order of sound quality:

 

6AS7Gs from GEC UK

6AS7G from RCA

6AS7G TS/CHATHAM

6H5C (basically a Svetlana / Russian Winged C 6AS7 compatible tube)

6080 from RCA & GE

6N13P Stock Chinese Tubes

------------
And then there's the 5998 tube...

I would rank the TS 5998's above the RCA 6AS7G's. Since I got the 5998's I have stopped thinking about getting rid of this amp and am now enjoying the LCD-2's with it. In fact other than the tube hum and the occasional static noise the LF339 with the 5998's is nearly as good with the LCD-2's as my restored Pioneer SX-1250 (which is the best I have heard the LCD-2).
 
Quote:

ultrainferno said:

 
You will love this combo, it sounds great!
About the tubes, I gathered this when I read through the whole thread:
 
Amp Tubes (Little Outside Ones), in order of sound quality:

 
EF800 from Telefunken (with converter)

EF80s from Telefunken & other brands (with converter)

6AC7s from GE

6SJ7s (both metal & glasstop) from RCA, Mullard, NEC etc.

Stock WF80/EF80 Tubes

Stock Russian 6*4 Tubes

 

Driver Tubes (Big Middle Two Tubes), in order of sound quality:

 

6AS7Gs from GEC UK

6AS7G from RCA

6AS7G TS/CHATHAM

6H5C (basically a Svetlana / Russian Winged C 6AS7 compatible tube)

6080 from RCA & GE

6N13P Stock Chinese Tubes

------------
And then there's the 5998 tube...

Click to expand...

 

Seems like I have to wait to try those GEC 6AS7G and TS 5998!
Looks like either are good depending which system are used.
We should make a list with the equivalents or the false dangerous equivalents. In clear after reading the whole thread I still don't know if 6AS7G is better than 6AS7GA. Also don't know if there is a 6080 that sounds good and with which tube amp?
Skylab seems like the authority here and I believe he had it all sorted out with his gigantic tube closet! So maybe that list looks like a final list (still would love to clarify the equivalent tubes).
 
Also in order: where to put RCA 5693 (needed for the 5998)?
 
Lastly i think we should place GEC 6AS7G and 5998 both on top of the list. Seems like a debate which one is better lush tubey vs tight tubey

it's too pricy for me so i put it on the bottom of the list. I should have put GEC there too

Hehe agreed!
I'm too noob in tube hunt

Hi,
 
if i understand correctly the middle 2 is a power tube & the outer smaller one is the driver tubes.

Quote:

ultaman said:

Hi,
 
if i understand correctly the middle 2 is a power tube & the outer smaller one is the driver tubes.

Click to expand...

Correct!

@telecaster & Ultaman
 
you should read this topic about the 6AS7G tunes: http://www.head-fi.org/t/410326/for-6as7g-tube-rollers-here
 

Hey thanks..that link help alot, talking about driver tube which 1 is the best match, can i use GEC cv1067 instead? BTW where can i get a converter? Thanks
 
EF800 from Telefunken (with converter)

EF80s from Telefunken & other brands (with converter)

6AC7s from GE

6SJ7s (both metal & glasstop) from RCA, Mullard, NEC etc.

Stock WF80/EF80 Tubes

Stock Russian 6*4 Tubes
 

Thanks for the links, I browsed it already but missed most of the crucial info by lack of knowledge. I'm learning little by little!
@Ultaman, I believe the GEC cv1067 is a 6J5/6C5C tube, and therefore should not fit the regular La Figaro 339 unless it as changed. But stock 339 uses 6AC7/6SJ7 instead. I read in this thread page 37 or 38 I believe that maybe new 339 out of factory will use 6J5 in the future, or is the future right now?!!
We should ask the Yuking representative Keph to the rescue here. His lovely upgraded 339 is configured that way and he said he cannont use anymore his TLFK EF800 and RCA 5693 tubes.
I'm speaking on behalf of others and am only a noob! soz guyz
 

Yeap the cv1067/6C5C/6J5 can only be used if you mod your 339 or buy new one specified with the cv1067/6C5C/6J5 driver tube configuration..for now Yuking haven't make changes to the 339..will update if he does..now my EF80-800 with converters and 5693 tubes can't be used in my modded 339...but Yuking gave me a EF86 to 6C5C converter though..need a pair od EF86 now to make sure..but my un-modded 339 with the 5998 and EF80/800 its not suitable for me( it makes a buzzing noise like a broken radio ) don't know about other peoples 339 though (pls confim if you have the tubes)..im just scared than when i get the EF86 tubes it will make the same noise it made with my un-modded 339 before...
 
don't know why but it seems 5998s and EF series don't matched well...

I have that combo for a couple of weeks now. The only thing i hear is a background humming with efficient headphones and some static discharge after an hour or so, but no buzzing noise. What does Yuking recommend with the 5998's?
 
Quote:

keph said:

Yeap the cv1067/6C5C/6J5 can only be used if you mod your 339 or buy new one specified with the cv1067/6C5C/6J5 driver tube configuration..for now Yuking haven't make changes to the 339..will update if he does..now my EF80-800 with converters and 5693 tubes can't be used in my modded 339...but Yuking gave me a EF86 to 6C5C converter though..need a pair od EF86 now to make sure..but my un-modded 339 with the 5998 and EF80/800 its not suitable for me( it makes a buzzing noise like a broken radio ) don't know about other peoples 339 though (pls confim if you have the tubes)..im just scared than when i get the EF86 tubes it will make the same noise it made with my un-modded 339 before...
 
don't know why but it seems 5998s and EF series don't matched well...

Click to expand...