[lukeap69]

I haven't heard that particular model of the Bryston but I heard one Bryston DAC last year and I thought it was good. Let us know how it sounds if you decided to get it. Cheers.

 

[whirlwind]

Hi whirlwind,

That Channel Master tube Made in Japan you may be able to identify from a comprehensive review of Japanese tubes that Oskari can send you a link to.
I have two pairs of Channel Master 6SN7 Made in Japan. They sound quite good, but I could not identify the Japanese manufacturer (even with the above mentioned reference).
I was finally able to do it by going to Google Images and typing in Japanese 6SN7 tubes. After some scrolling through a number of pictures I finally found the exact look-alike - NEC.

Don't know about you, but I enjoy finding out who made a tube and when, trying to decipher the date codes. The Japanese date code was easy: Something like 5J which means 1955, October if I remember correctly.

Hi Mordy.
My 5AZ4 has ServiceMaster on it and there is another name above that , but I can not make it out. No numbers on the base of the tube, just Japan.
number 243 is etched small in the glass....tube sounds nice

Thought I'd create a post talking about Glenn amps Tried out a pair of HE-6 headphones today. Nice new drivers - only 12 months old - in great shape all around. Gave them a listen with the WA22 first, but even with the preamp turned up high the WA22 doesn't really have enough power (as expected). Next up was to try the HE-6 with the Glenn 300B. This was much better, but I still had to turn the preamp up to about 70 whereas with the LCD-3 I only need to turn the preamp up to about 40 (out of 100).

The HE-6 sound really good! These will now be my second pair of headphones. The LCD-3 just has a bit more of a holographic/enveloping sound with a more commanding bass, but the HE-6 are still mighty fine. As others have mentioned many times, just make sure you have a beefy amp and a decent preamp with plenty of gain.

Great picture.

Congrats on being able to power the HE-6 with it.

 

[whirlwind]

UT

How long was the wait for the Atticus & Eikon ?

 

[UntilThen]

3 weeks .... I think.

Of all my headphones, I use Eikon the most. Sounds best to me and it's also the most comfortable. I can't believe I'm saying this but it's more comfortable than HD800. It's more comfortable than Atticus because the Eikon pads are soft lamb's skin.

 

[whirlwind]

3 weeks .... I think.

Of all my headphones, I use Eikon the most. Sounds best to me and it's also the most comfortable. I can't believe I'm saying this but it's more comfortable than HD800. It's more comfortable than Atticus because the Eikon pads are soft lamb's skin.

Thanks...I may have it for Christmas...I will probably get two sets of pads for it

 

[Oskari]

5AZ4....only writing on base of tube reads Japan...I just rolled it in the amp.

That Channel Master tube Made in Japan you may be able to identify from a comprehensive review of Japanese tubes that Oskari can send you a link to.

My 5AZ4 has ServiceMaster on it and there is another name above that , but I can not make it out. No numbers on the base of the tube, just Japan.
number 243 is etched small in the glass....tube sounds nice

International Servicemaster. Is that a mislabeled 5Y3GT? The 5AZ4 is a loctal type.

See photos at http://www.geocities.jp/radiomann/HomePageVT/Audio_REC_US.html#5Y3GT. I'd say NEC.

 

[mordy]

International Servicemaster. Is that a mislabeled 5Y3GT? The 5AZ4 is a loctal type.

See photos at http://www.geocities.jp/radiomann/HomePageVT/Audio_REC_US.html#5Y3GT. I'd say NEC.

Thanks Oskari. Re the number 243, it could mean 43rd week (October) 1962.

 

[gibosi]

Some tube/amp porn:

(Although I understand that most here have no real interest in 4-volt rectifiers and old single triodes....)

A Telefunken WE56 manufactured in Milan, Italy, 1942, a quad of Tung-Sol 6BX7GT (about 1960), and in the center, a pair of RCA #76 (1936).

Sounds darn good.



WE56 is "Telefunken speak" for AZ4. Since the AZ4 and AZ12 are electrically identical, I hope eventually to compare the Italian Telefunken WE56 to a German Telefunken AZ12, also manufactured in 1942. I had wondered if the WE56 was actually manufactured in Milan, or if it was largely manufactured in Berlin and finished in Milan. But as can be seen in the photo below compared to the German-made AZ12, the plates, filaments, mica supports, getter holder and glass pinch are all quite different, so I am now inclined to believe that the WE56 was actually assembled in Milan from components sourced locally.

German AZ12 (Jan 1942), on the left, and Italian WE56 (Nov 1942), on the right.

 

[2359glenn]

I originally designed the EL3N amp to use 4 volt side pin rectifiers AZ4 or AZ1 but was asked to change to 5 volt
8 pin for more tube rolling possibilities.

 

[whirlwind]

International Servicemaster. Is that a mislabeled 5Y3GT? The 5AZ4 is a loctal type.

See photos at http://www.geocities.jp/radiomann/HomePageVT/Audio_REC_US.html#5Y3GT. I'd say NEC.

I think you are right and that the tube must be mislabeled.
When I google for pics of 5AZ4, like you said, I get a tube with a loctal base.

Thanks for the link...much appreciated.

 

[UntilThen]

Thanks...I may have it for Christmas...I will probably get two sets of pads for it

It will be a merry christmas for you then.

I will get a chance to listen to an Abyss on 11th Nov in the local Sydney meet - on my Yggy and Rggy combo. There will also be a Woo WA5LE there. Have not heard the WA5 with 300b tubes before. Would have been good to listen to the Abyss on Glenn's OTL but there's always another time.

 

[whirlwind]

It will be a merry christmas for you then.

I will get a chance to listen to an Abyss on 11th Nov in the local Sydney meet - on my Yggy and Rggy combo. There will also be a Woo WA5LE there. Have not heard the WA5 with 300b tubes before. Would have been good to listen to the Abyss on Glenn's OTL but there's always another time.

Yeah, I am really looking forward to hearing the Atticus with both amps. I have been wanting to hear the Atticus since it's launch.

Should be great fun listening to Abyss and all of that good gear.

 

[whirlwind]

I originally designed the EL3N amp to use 4 volt side pin rectifiers AZ4 or AZ1 but was asked to change to 5 volt
8 pin for more tube rolling possibilities.

I like being able to roll rectifier tubes, but it is not necessary.

 

[2359glenn]

I like being able to roll rectifier tubes, but it is not necessary.

Speaking about rolling I have your 4 pin to 8 pin adapter made and packed.
More tubes to roll 5Z3 80 83

 

[whirlwind]

Speaking about rolling I have your 4 pin to 8 pin adapter made and packed.
More tubes to roll 5Z3 80 83

Thank you Glenn.

I look forward to trying some type 80 rectifiers