[inphu510n]

is this the converter? http://www.ebay.com/itm/1x-6AU6-to-6AK5-tube-adapter-socket-converter-/300919049225?pt=Vintage_Electronics_R2&hash=item46102c4c09

Without visiting the link I'm 90% sure those are the ones you want.

 

[mab1376]

Quote:

Change jumpers? But aren't you still listening to the EK90? For the EH900S (and the Amperex E91H) you would use the same jumper setting, EF95. So stick them in and tell us what you hear! lol

OK then, I was going to use the EF92 settings, but i'll give the EF95 setting a try this weekend.

 

[Acapella11]

Hi everyone here, I wasn't lazy posting, I was on holidays and basically offline. This thread has gone on like crazy again, as expected, lol, and I have just updated myself. Great stuff about the heptode grids AFB. 1 - 7 strapping is now the top bullet point on my list =)
 
I am expecting some Amperex E91H (6BY6) and Russian 6A2P (6BE6) tubes. Once we are through the new strap mod options, I am going to update the table on page 77 respectively. Sounds like a lot of fun ahead!
 

 

[mab1376]

Quote:

Hi everyone here, I wasn't lazy posting, I was on holidays and basically offline. This thread has gone on like crazy again, as expected, lol, and I have just updated myself. Great stuff about the heptode grids AFB. 1 - 7 strapping is now the top bullet point on my list =)
 
I am expecting some Amperex E91H (6BY6) and Russian 6A2P (6BE6) tubes. Once we are through the new strap mod options, I am going to update the table on page 77 respectively. Sounds like a lot of fun ahead!
 

 
Let me know how those Russian tubes sound! Might be a good pair with Russian 6n6p type power tubes. Waiting on my own Amperex E91H tubes as well, curious to see how they sound! the 6BE6 type tubes do have a pleasingly different flavor with the 7-1 strap, give it a shot if you have some on hand!
 
Have fun!

 

[mab1376]

Quote:

OK then, I was going to use the EF92 settings, but i'll give the EF95 setting a try this weekend.

 
They TFK EH900S sound very vanilla. Not too punchy, not too harsh. They also lack a bit of detail.
 
This was also with no burn in.
 
Also, great test track:
 

 

[gibosi]

I hope they improve after burn in....
 
Are your TFK EH900S also labeled E91H? I have found some EH900S with gold pins and in another location some EH900S/E91H with regular pins. Further, I believe the gold pins are newer, with O-getters and the regular pins are older, with D-getters.
 
Which to get? But I think I will wait until I hear more about yours...

 

[Audiofanboy]

Quote:

 
They TFK EH900S sound very vanilla. Not too punchy, not too harsh. They also lack a bit of detail.
 
This was also with no burn in.
 
Also, great test track:

Out of curiosity, you wouldn't have a picture of those tubes, or, like, the ebay ad you bought them from; just for reference? There seems to be more than a few different types of Telefunken EH900S out there apparently...

 

[Audiofanboy]

If anyone -living in the US- is interested, I found these on ebay:
 
http://www.ebay.fr/itm/Amperex-6687-NOS-Made-in-Holland-/140973286651?pt=Vintage_Electronics_R2&hash=item20d2a9a4fb
 
They should/could/might be the same as gibosi's or my future Holland-made E91H (gibosi's are dual labeled 6687), but no guarantee. They're pretty cheap anyway, so it's not exactly a huge risk...

 

[MIKELAP]

Compared HIT RAY 6AV6, GE6136, AND USAF 6AH6WA and the HIT RAY and the USAF i would say are pretty similar sounding soundstage is wide, detailed ,balanced sound . going to get more of those  6av6 i like em alot and the 6ah6 good tubes gor the price. As for the GE 6136 no more of those but ill burn em in anyways who knows maybe they will improve or just to rid them of the microphonics.

 

[mab1376]

Quote:

Out of curiosity, you wouldn't have a picture of those tubes, or, like, the ebay ad you bought them from; just for reference? There seems to be more than a few different types of Telefunken EH900S out there apparently...

 
I specifically went for the gold pin version: http://www.ebay.com/itm/320521115105?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
 
I also got a pair of these to try: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=370824602237

 

[MIKELAP]

On the way 10 JAN GE, JAN RCA, WESTINGHOUSE,SYLVANIA  6AV6'S, AND 5 6BY6 RCA'S  well see i they sound alike or not i guess ill be set for life one way or the other .

 

[gibosi]

While I have the others, I haven't heard the Westinghouse 6AV6, so I will curious to read your impressions. And yes, these plus the 6BY6 should keep you busy for a while, but maybe not for the rest of your life!

 

[Audiofanboy]

Quote:

 
I specifically went for the gold pin version: http://www.ebay.com/itm/320521115105?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
 
I also got a pair of these to try: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=370824602237

Great, now I can compare a little.
 
Your Telefunken EH900S are probably different from the ones I ordered (yours have a silk-written number on top and different shape from the ones I ordered, and those have "Made in Germany" written; so I wouldn't be surprised if we find different impressions for different Telefunken EH900S - I've seen up to 4 or 5 different versions on ebay actually, and only two that I could identify as being made by Tele for sure).
 
I'm also curious as to what those Lorenz tubes will sound like. These were evidently made in Eastern Europe / USSR (saucer type getter, pointy shiny pins, general glass shape...) but should be pretty high grade since they're German mil-spec. I do find it interesting that the -West?- German military would end up using Russian tubes when its main threat in that time was their same Eastern neighbors, but oh well, such is life I guess lol.

 

[MIKELAP]

Quote:

While I have the others, I haven't heard the Westinghouse 6AV6, so I will curious to read your impressions. And yes, these plus the 6BY6 should keep you busy for a while, but maybe not for the rest of your life!

i ordered them today finally from FLA.should be here within a week i guess .  so 15 tube came out to $55.00 including shipping which comes out to $3.66 each thats a good price my guy here was charging me up to $10.00 each .hey mordy you must proud of me because i learn this from you on this thread  earlier on when i first got my littledot , that you dont have to pay a fortune to have decent sound thanks for that

 

[mordy]

HI Mikelap,
 
You made my day - thanks!