[Policar]

 
Policar,
 
I had those as stock tubes with my MK III, i'm fairly sure they are French RTC tubes NOT Mullard, they are ok but not as good as Mullard, if you want Mullard the ones to go for are the mill spec versions, the M8100 (EF95), or the M8161 (EF92), and as for the power tubes Octavian is right, the 6N6P and 6N6P-IR are a definite improvement over the stock, as to which is better as always it's very subjective, the 6N6P is slightly warmer with stronger bass, the 6N6P-IR is cooler slightly better clarity/detail and a tad less bass.  Here is a link to some Mullard M8100 to give you an idea.
 
http://www.ebay.co.uk/itm/M8100-CV4010-EF95-MULLARD-BLACK-PLATE-8140-NOS-E-MATCHED-PAIR-VALVE-TUBE-A16-/371599617046?
hash=item5685102c16:gy4AAOSw7KJXDpk

Thanks, I'll return these and get some of those. Where should I buy them or should I just trawl eBay? Now I want to go somewhere reliable.
 
Will it make a big difference? Right now the amp sounds awful compared with the crack, which has good tubes. The 6N6P sounds prefect for me, I need more bass.

 

[Scutey]

:

 
Thanks, I'll return these and get some of those. Where should I buy them or should I just trawl eBay? Now I want to go somewhere reliable.
 
Will it make a big difference? Right now the amp sounds awful compared with the crack, which has good tubes. The 6N6P sounds prefect for me, I need more bass.

​Well I've never heard the crack so can't comment on that but you should see a significant difference with the Mullard, although, as always. these things are very subjective. if you need more bass then the M8100 should give you that as will the 6N6P for powers, although its worth bearing in mind that both are quite warm bassy tubes, the 6N6P-IR is also worth considering. Here is a link for a good seller in the UK who I've bought tubes from and is reliable. http://www.ebay.co.uk/itm/M8100-CV4010-5654-MULLARD-VINTAGE-MATCHED-PAIR-VALVE-TUBES-SQUARE-GETTER-/272442375482?hash=item3f6ed4bd3a​
Quote
 
http://www.ebay.co.uk/itm/6N6P-ECC99-LITTLE-DOT-MK2-3-USSR-MATCHED-PAIR-VALVE-TUBE-/262564320395?hash=item3d220d948b

 

[TrollDragon]

 
Thanks, I'll return these and get some of those. Where should I buy them or should I just trawl eBay? Now I want to go somewhere reliable.
 
Will it make a big difference? Right now the amp sounds awful compared with the crack, which has good tubes. The 6N6P sounds prefect for me, I need more bass.

IMHO I really don't think you will get the LD MKII to sound anywhere close to the Crack, but I could be wrong. You would have to modify the LD MKII to accept a dual triode like the 6DJ8/6922 as a preamp and a 6080/6AS7G as output.
 
Maybe @MIKELAP can chime in here as he chased a massive quantity of tubes for his LD MKIII before he obtained his Crack.

 

[MIKELAP]

 

 
Thanks, I'll return these and get some of those. Where should I buy them or should I just trawl eBay? Now I want to go somewhere reliable.
 
Will it make a big difference? Right now the amp sounds awful compared with the crack, which has good tubes. The 6N6P sounds prefect for me, I need more bass.

IMHO I really don't think you will get the LD MKII to sound anywhere close to the Crack, but I could be wrong. You would have to modify the LD MKII to accept a dual triode like the 6DJ8/6922 as a preamp and a 6080/6AS7G as output.
 
Maybe @MIKELAP can chime in here as he chased a massive quantity of tubes for his LD MKIII before he obtained his Crack.

I had the the MK3 and the best setup i found with only adapters was with C3G's up front and 6SN7 as power tubes and even then to me amp sounded  thinner compared to a WA6 or a Crack. so it has its limits i would say. But for what it is it sounds great call it a different flavor That was with Senns HD800 so YMMV. 

 

[OctavianH]

My 6H8Cs arrived today, but I cannot try them yet because the adapters are somewhere on the road.
 
So, some pictures with the monkey:
 

 

 
They seem quite similar with what MIKELAP posted here a few pages ago. Anyhow, no "OKT" on them, which as far as I know was the Quality Control OK. This one is from '77, made in CCCP, but other 2 of them are from '73.

 

[OctavianH]

Guys,
 
Adapter question because I am quite confused.
What is the difference between:
 
http://www.ebay.com/itm/1pc-Gold-plated-6SN7-6n8p-CV181-TO-6CG7-6FQ7-tube-converter-adapter-/201115946751
 
and
 
http://www.ebay.de/itm/201816047925?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
 
And which one will work with 6SN7 as power tubes? For me they look the same, even if they seem different products used for different tube types.

 

[gibosi]

  Guys,
 
Adapter question because I am quite confused.
What is the difference between:
 
http://www.ebay.com/itm/1pc-Gold-plated-6SN7-6n8p-CV181-TO-6CG7-6FQ7-tube-converter-adapter-/201115946751
 
and
 
http://www.ebay.de/itm/201816047925?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
 
And which one will work with 6SN7 as power tubes? For me they look the same, even if they seem different products used for different tube types.

 
Both will work. The ECC88, 6DJ8, 6922, 6FQ7 and 6CG7 all have the same pinout.

 

[OctavianH]

Ah ok, pfuu, they look the same but I thought maybe wiring is different or something. 
 
Later edit: 
 
More goodies for me, but no year on these ones:

 

[kamzak88]

i looking for tubes for LD+ and grado. I want buy 6ZH1P-EV
 
this seller is ok?
http://www.ebay.com/itm/2x-Voshkod-6ZH1P-EV-6J1P-EV-Matched-Pair-Little-Dot-Amp-III-IV-/142138665883?hash=item21181feb9b:g:bfYAAOSwUKxYkHgt
 
or
 
Mullard M8161/CV401
 
http://www.ebay.com/itm/122459688105?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649

 

[TrollDragon]

  i looking for tubes for LD+ and grado. I want buy 6ZH1P-EV
 
this seller is ok?
http://www.ebay.com/itm/2x-Voshkod-6ZH1P-EV-6J1P-EV-Matched-Pair-Little-Dot-Amp-III-IV-/142138665883?hash=item21181feb9b:g:bfYAAOSwUKxYkHgt
 
or
 
Mullard M8161/CV401
 
http://www.ebay.com/itm/122459688105?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649

Matched pairs are not required...

You can get 4 of those 6Ж1П-EB from this seller for less than $10 shipped.
http://www.ebay.com/itm/6J1P-EV-6ZH1P-EF95-6F32-6AK7-Lot-of-4-tubes-Voskhod-Little-Dot-Amplitrex-/282297663940

 

[dobigstuff]

  Ah ok, pfuu, they look the same but I thought maybe wiring is different or something. 
 
Later edit: 
 
More goodies for me, but no year on these ones:

OctavianH:
 
How do those Jan Philips 6SN7's sound?  I have been trying to find a good pair of those.  They are supposed to be excellent.

 

[Scutey]

  Ah ok, pfuu, they look the same but I thought maybe wiring is different or something. 
 
Later edit: 
 
More goodies for me, but no year on these ones:

​They are identical to mine. The box mine came in had a 7/86 date code, so I guess they will be of a similar date, give or take a year or two.

 

[Scutey]

  OctavianH:
 
How do those Jan Philips 6SN7's sound?  I have been trying to find a good pair of those.  They are supposed to be excellent.

​They are very good, fast, clear/detailed I find them quite linear, bass isn't over pronounced, just tells you what's there, highs extend well mids nicely detailed, good imaging, coolish. There is a good UK ebay seller, LANGREX,http://www.ebay.co.uk/itm/6SN7WGTA-JAN-PHILIPS-ECG-NOS-/270762188350?hash=item3f0aaf1e3emalxRgSUgLyK7SLP2Qjuh8wQuote:

 

[gibosi]

 
How do those Jan Philips 6SN7's sound?  I have been trying to find a good pair of those.  They are supposed to be excellent.

 
These are essentially Sylvania 6SN7GTB. Around 1980, Philips sold off their Holland and British vacuum tube assets, and in a move to obtain a stronger position in the US market, purchased Sylvania's Electronic Components and Consumer Electronics divisions, including the vacuum tube manufacturing business. So these "Philips" tubes were made in that same Sylvania factory. Only the brand name changed. Evidently, production at the factory ceased around 1987.

 

[kamzak88]

Matched pairs are not required...


You can get 4 of those 6Ж1П-EB from this seller for less than $10 shipped.
http://www.ebay.com/itm/6J1P-EV-6ZH1P-EF95-6F32-6AK7-Lot-of-4-tubes-Voskhod-Little-Dot-Amplitrex-/282297663940

What is the difference between http://rover.ebay.com/rover/1/711-53200-19255-0/1?campid=5337413452&toolid=10001&mpre=http%3A%2F%2Fwww.ebay.com%2Fitm%2F2x-Voshkod-6ZH1P-EV-6J1P-EV-Matched-Pair-Little-Dot-Amp-III-IV-%2F142138665883%3Fhash%3Ditem21181feb9b%3Ag%3AbfYAAOSwUKxYkHgt and http://www.ebay.com/itm/6J1P-EV-6ZH1P-EF95-6F32-6AK7-Lot-of-4-tubes-Voskhod-Little-Dot-Amplitrex-/282297663940 lamps?