[gibosi]

....

These 3 B36 came from Stavros and I cannot tell their tone apart. They sound very similar to me. I am using the black base now and it's a glorious rich tone. You only need to use one in the GOTL. How good is that.

Give up playing with tubes? That would be hard. Well maybe until the VoiceBox arrives next weekend. Now go and roll your tubes and show me your nice ECC3* collections.

Again, the black base pictured above, labeled as a Marconi B36, is actually an Italian Fivre 12SN7GT. Yes, it is a very nice tube but it is not a British-made Marconi B36.

 

[UntilThen]

Again, the black base pictured above, labeled as a Marconi B36, is actually an Italian Fivre 12SN7GT. Yes, it is a very nice tube but it is not a British-made Marconi B36.

That being the case, the Fivre 12SN7gt does sound very nice and I have 2.

 

[leftside]

You must be very rich now because these Osram B65 have a asking price of US$3000.
https://www.ebay.com/itm/B65-6SN7GT-Osram-made-in-England-Tested-on-Amplitrex-1676006-31/192324893423?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=50963&meid=3a62566bc6494491a8aedfa74b8a9b8f&pid=100675&rk=3&rkt=15&sd=253414822447&itm=192324893423&_trksid=p2481888.c100675.m4236&_trkparms=pageci:377a0994-35fe-11e8-9eaa-74dbd180fbe2|parentrq:8361fedc1620a9c10e0ff348fff904f5|iid:1

These 3 B36 came from Stavros and I cannot tell their tone apart. They sound very similar to me. I am using the black base now and it's a glorious rich tone. You only need to use one in the GOTL. How good is that.

Give up playing with tubes? That would be hard. Well maybe until the VoiceBox arrives next weekend. Now go and roll your tubes and show me your nice ECC3* collections.

Surely those B65's won't sell for that price. Mine are also Orsam.

Most of my ECC3* tubes are on the ECC31/32/33/34/35 thread.

"You only need to use one in the GOTL. How good is that."
Ordered

 

[UntilThen]

"You only need to use one in the GOTL. How good is that."
Ordered

What did you exactly ordered?

 

[UntilThen]

Did you order this blues amp?

 

[mordy]

Here is the box for a Raytheon 12SN7 that an Ebay tube seller 'threw in' in an order for several 6BL7's - a couple of years ago.
Had never heard it, but just tried it on the GOTL...and it sounded very good!
Hi JV,

Is it possible that your International Raytheon 12SN7 was made in Japan by Hitachi? The date code is a two letter code, for example 4A = January 1964 (?).

 

[JazzVinyl]

Mordy -

There are no markings at all on the tube that came in the Raytheon 12SN7GTA box. No lettering or etchings on the glass, nothing printed on the base. Tube looks brand new and plays great and it super quiet. But don't know anything about it, just assume it _is_ a Raytheon 12SN7GTA as the box says...but....?

 

[UntilThen]

Happiness !

My c3g and 6 x 6BX7 are quiet again. So quiet it's pitch black quietness. How? Well I have 4 NOS Siemens c3g and 2 NOS Telefunken c3g/s. I pull out the 4 Siemens and lay them on the table and like a magician I move them around. Then selected 2 and put it into the OTL amp. Viola it's quiet.

I've laid off c3g and 6bx7 for a while but now hearing it again, it's just an incredibly appealing tone.

 

[whirlwind]

Good choice with that configuration. 6 x 6BX7 with a quiet combination is a very satisfying tone.

I've tried 4 x 6AS7 and 4 x 5998 but I find 2 x 6AS7 quieter and like most here, quiet is more important for me too. Both Cetron 6336b and Svetlana 6h13c sound very good on the OTL but my favourite is still Gec 6AS7G and Gec 6080. That is reserved for special occasions though. LCD-2f is quite easy to drive at 70 ohms. Even 2 x 6AS7 drives it well. However I might find 4 x 6as7 that is very quiet and I think I might prefer it. 4 does have a greater impact. That's why I've 4 Svetlana 6h13c on the way.

I've the best part of yesterday going through my headphones with ECC31 and 2 x Cetron 6336b. HD800, Eikon, Atticus and LCD-2f. I like them all. I find it hard to decide which 2 to cull from my collection. I might have to keep it all.

It is very hard not to like all of the different tubes and enjoy them when you have many and you have many great ones.

I agree wholeheartedly with this statement. You have a lot of tubes too and many good ones.

I know what you mean...once you get rid of a headphone....that is when you go to reach for it and it is gone
I have bought the a few times because of this...the HD650 also.

 

[blackrain139]

Tempted to get a 300B from Glenn. For those of you who has an Abyss Phi and the 300B, how is the pairing?

I don’t mind giving up a bit of slam for sweeter mids

 

[Oskari]

Here is the box for a Raytheon 12SN7 that an Ebay tube seller 'threw in' in an order for several 6BL7's - a couple of years ago.
Had never heard it, but just tried it on the GOTL...and it sounded very good!

Is it possible that your International Raytheon 12SN7 was made in Japan by Hitachi? The date code is a two letter code, for example 4A = January 1964 (?).

Mordy -
There are no markings at all on the tube that came in the Raytheon 12SN7GTA box. No lettering or etchings on the glass, nothing printed on the base. Tube looks brand new and plays great and it super quiet. But don't know anything about it, just assume it _is_ a Raytheon 12SN7GTA as the box says...but....?

International is kind of a hint that the tube in the box probably wasn't made by Raytheon in Massachusetts.

 

[gibosi]

Towards the end of the vacuum tube era, Raytheon was one of the first US companies to begin to outsource production to Japan. Once in a while you will see tubes labeled "Hit-Ray", which were a result of a joint venture between Raytheon and Hitachi. That said, Ratheon may well have outsourced production to more than one Japanese manufacturer....

 

[Oskari]

There are sources that mention NEC.

 

[2359glenn]

Just bought ten 1633s for $4 each cant beat that. Figured I buy a bunch before they get found out how good they are.
I give them away with the amps so need a bunch.

 

[JazzVinyl]

I think Whirlwind was on to something when he said 12SN7's are the 'bargain' tubes. Have bought a few recently...all for cheap, all in pristine condition, are nice and quiet and sound great.

Not quite the bargain of Glenn's 1633's but not far off.