[sgbwill2]

  Totally love the HE-500 with my 1983 6H30P-DR and C3GS tubes. Hope the 5687 tubes I have ordered come any close to that.
Besides this, I found that with the HD800, my Sylvania 6SN7WGT brown base tubes have a similar signature to the 6H30P-DRs.

I found the 5687's to be better than any 6sn7/6f8g tubes that I tried. Hope you like them as much as I do

 

[MIKELAP]

 

  Totally love the HE-500 with my 1983 6H30P-DR and C3GS tubes. Hope the 5687 tubes I have ordered come any close to that.
Besides this, I found that with the HD800, my Sylvania 6SN7WGT brown base tubes have a similar signature to the 6H30P-DRs.

I found the 5687's to be better than any 6sn7/6f8g tubes that I tried. Hope you like them as much as I do

Are the 5687's  plug n play as power tubes 

 

[sgbwill2]

  Are the 5687's  plug n play as power tubes 

Nope you need adapters as they are 12.6v tubes but can also run in 6.3v. I bought these and they work fine:
 
http://www.ebay.co.uk/itm/1x-5687-to-6N6-6922-6N11-ECC88-6DJ8-Vacuum-tube-adapter-socket-converter-/291131310065?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item43c8c73ff1

 

[MIKELAP]

I know this tube can be used as a driver so  is it possible or not to use only one tube as driver in the copper 6DJ8 adapter or the 12ax7 adapter i made awhile back .Thanks 

 

[sgbwill2]

The 5687 is very similar to 12ax7 I believe but it draws up 3 times as much (0.9A in 6.3v setup compared to 0.3A with 12ax7). It should in theory work in the 12ax7 adapter but I am unsure whether it would strain the amp too much being used as drivers. As for being used as power tubes they are fine without external heaters.

 

[gibosi]

  I know this tube can be used as a driver so  is it possible or not to use only one tube as driver in the copper 6DJ8 adapter or the 12ax7 adapter i made awhile back .Thanks 

 
As sgbwill2 wrote, with an adapter it could be used in one of your copper adapters. However, you would need to find a way to power the heaters with an external heater power supply. As best we can tell, the LD can safely provide up to 0.45A, whereas the 5687 requires 0.9A.
 
As I use an external PS, the Sylvania 5687WA is one of my favorite drivers.

 

[dxanex]

  Some pictures of the La Figaro
 
 

The 339 is a gorgeous sounding OTL amp, especially with the HD 650. I can vouch for the Tung-Sol 5998 as I use it in my Crack/Speedball. They are expensive, but the bump in detail and resolution is truly significant.

 

[MIKELAP]

   Santa's little tube elf's are starting to get busy .Offer the one you love a tube chances are youll have to duck lol.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

 

[i luvmusic 2]

 

  Please don't bring your CAR inside your house just to power-up your LD amp tubes.

Good advice ,use cables lol

I hope someone have a very long jumper cables.

 

[sgbwill2]

  The 339 is a gorgeous sounding OTL amp, especially with the HD 650. I can vouch for the Tung-Sol 5998 as I use it in my Crack/Speedball. They are expensive, but the bump in detail and resolution is truly significant.

Yes I agree it is very nice and the 650 pairs with it very nicely. Unfortunately the 5998's are crazy expensive at the moment though

 

[gibosi]

  Yes I agree it is very nice and the 650 pairs with it very nicely. Unfortunately the 5998's are crazy expensive at the moment though

 
Given what they often cost, this looks like a pretty good deal:
 
http://www.head-fi.org/t/744559/matched-pair-5998-tung-sol-in-excellent-condition

 

[dxanex]

Given what they often cost, this looks like a pretty good deal:

http://www.head-fi.org/t/744559/matched-pair-5998-tung-sol-in-excellent-condition

+1 that is a good deal.

 

[David.M]

Hey, guys, it's me again.
 
I decided to not pull the trigger on the Woo Audio 3, just yet ! Maybe Mordy's or Gibosi's recommendation might save me some bucks !   Even tho my Electro-Harmanox and Sovtek 6h30-PI died very prematurely and early deaths.
 
 
So I've  been re-listening to this amp with  the Voskhod 6N23P(power tubes) and Mullard M8100.
 
The Senn HD600 sounded so muffled, buzzy and just plain out weird for the first 30 min. Then i realized I had the Gain Settings on 10, THIS WHOLE TIME !!
 
 
So i went back to gain 3(the lowest for the LD MK3), and the sound was much more cooler, spacious, soft, and more pleasant. Just the way the HD600 suppose to sound !
 
 
Even tho my 6N23P are still very new(5 hours) , why does it take so little on the volume dial to reach loud volume. At 10'oclock, the Senn's become quite loud? But the Beyer DT990, I could be comfortable with 1'oclock?
 
 
Maybe the Voskhod 6N23P need less volume or maybe this is a not a recommended power tube? The tube sounds great, but maybe i am missing something here?
 
 
My main question is should i try a 6N6P-IR, for power tube ? Will it sound more full bodied? And allow me to play with the volume a little more?

 

[gibosi]

  So I've  been re-listening to this amp with  the Voskhod 6N23P(power tubes) and Mullard M8100.
 
The Senn HD600 sounded so muffled, buzzy and just plain out weird for the first 30 min. Then i realized I had the Gain Settings on 10, THIS WHOLE TIME !!
 
 
So i went back to gain 3(the lowest for the LD MK3), and the sound was much more cooler, spacious, soft, and more pleasant. Just the way the HD600 suppose to sound !
 
 
Even tho my 6N23P are still very new(5 hours) , why does it take so little on the volume dial to reach loud volume. At 10'oclock, the Senn's become quite loud? But the Beyer DT990, I could be comfortable with 1'oclock?
 
 
Maybe the Voskhod 6N23P need less volume or maybe this is a not a recommended power tube? The tube sounds great, but maybe i am missing something here?
 
 
My main question is should i try a 6N6P-IR, for power tube ? Will it sound more full bodied? And allow me to play with the volume a little more?

 
The 6N23P is a 0.30A tube, so no, it is not recommended for use as a power tube. Even so, low-power tubes like the 6N23P tend to work pretty good with high Z cans like your 300 ohm HD600. I have no experience or knowledge regarding the DT990s, but it seems that there are several versions with difference impedance? Which ones do you have?
 
But to answer your last question, yes, the 6N6P or 6N30P are better suited as power tubes.

 

[hypnos1]

Hi guys.
 
Further confirmation that our humble LDs are capable of truly outstanding results, once you get into C3g(S) + 6AS7G/6080 land...viz... my Beyer T1s have finally arrived and I just cannot believe the sound I am getting from these babies (and the LD, of course!!). And this is with them straight out of the box. I really thought my HD650s with pure silver cable were wringing nearly every last drop from my modded MKIV SE...HOW WRONG can one be, lol?! These T1s must be taking the LD up into very serious amp territory indeed...not just one level or two, but many!!
 
What they will bring to the Feliks-Audio 'Elise', which hopefully should be winging its way to me towards the end of next week (

), I can't begin to imagine (unless LD + C3gS is equal to the Elise minus C3gS - in which case I'd be MAKING the C3gS work in her, whatever it takes lol!).
 
I cannot overstate how amazing these T1s are already - they really have blown the 650s RIGHT out of the water...and that's before any burn-in (mind you, they're a darned sight more expensive! But if you can get a decent(?) price on them I think they are worth EVERY penny...no wonder Skylab rates them the King of dynamic HPs. (If you don't believe me, just ask my MKIV SE lol!!

).