2359glenn | studio
Aug 28, 2018 at 9:01 AM Post #22,081 of 39,986
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Aug 28, 2018 at 9:07 AM Post #22,082 of 39,986
I'm really enjoying my HD650s with quad power tubes Chatham 6AS7Gs and a Sylvania 12SN7GT. The headphones sounds wide, punchy, and produces bass! I didn't think the HD650s could sound this great. The E-Mu Teaks almost sound like the Atticus from memory and I can just imagine what the Atticus would sound like from this amp.

I like the Auteurs from the 6336Bs. I find the 6 x 6BX7 works well with other headphones but makes the Auteurs sounds lean. Even with a warm driver tube. Anyone have a combination they enjoy with the Auteurs?

No Auteurs here, but would encourage 6BL7 for headphones that need a punchier bass note.

I too am amazed at HD650 in this amp....6BX7 with C3g is really something....I was not so in love with C3g when I first got the amp...but many hours in, and they are sounding much less "sterile" to me, now....

:)
 
Aug 28, 2018 at 9:16 AM Post #22,083 of 39,986
No Auteurs here, but would encourage 6BL7 for headphones that need a punchier bass note.

I too am amazed at HD650 in this amp....6BX7 with C3g is really something....I was not so in love with C3g when I first got the amp...but many hours in, and they are sounding much less "sterile" to me, now....

:)

I'm very impressed with the HD650s. I knew they scaled but not like this. :)

I tried the Lorenz c3g paired with the 6BX7s but they sounded closed in. I'll burn them in so I can feel out the tube. I haven't tried the Seimens c3g yet which is on a long burn in to-do list.

Also are those naked c3gs? You have to take pic of it in the dark. I love the purplish/bluish hue those give off.
 
Aug 28, 2018 at 10:16 AM Post #22,084 of 39,986
I'm really enjoying my HD650s with quad power tubes Chatham 6AS7Gs and a Sylvania 12SN7GT. The headphones sounds wide, punchy, and produces bass! I didn't think the HD650s could sound this great. The E-Mu Teaks almost sound like the Atticus from memory and I can just imagine what the Atticus would sound like from this amp.

I like the Auteurs from the 6336Bs. I find the 6 x 6BX7 works well with other headphones but makes the Auteurs sounds lean. Even with a warm driver tube. Anyone have a combination they enjoy with the Auteurs?

Have you tried the Auteurs with a good set of 6AS7 or 5998?
 
Aug 28, 2018 at 10:31 AM Post #22,085 of 39,986
Have you tried the Auteurs with a good set of 6AS7 or 5998?

I’ve rolled 4 x Chatham 6AS7Gs with a few tubes but I find them fatiguing. Most were warm tubes and darker tubes: RCA 12SX7/RCA 12SN7/KR 12SN7. I don’t find the 6BX7s fatiguing just a little lean. The 6336Bs sound fantastic to me with the Auteurs. What’s your go to tube pairing with the Auteurs Glenn?

You spoiled from the sound the HD650s and E-Mu Teaks produced matched with the GOTL.

I need to take my advice and circle back later. I need to put in time with the current tubes I have. See what’s a good synergy with the Autuers and purchase those tubes or try out other tubes.
 
Aug 28, 2018 at 10:33 AM Post #22,086 of 39,986
I'm very impressed with the HD650s. I knew they scaled but not like this. :)

I tried the Lorenz c3g paired with the 6BX7s but they sounded closed in. I'll burn them in so I can feel out the tube. I haven't tried the Seimens c3g yet which is on a long burn in to-do list.

Also are those naked c3gs? You have to take pic of it in the dark. I love the purplish/bluish hue those give off.

Yes, naked Seimens C3g's...I have seen the picture of the C3g's and the blue light....but I have never seen anything even close to that in mine. Mine look like regular filaments, alit :)

And as I said...seems like the amp needs generous burn in time before C3g's come alive....my C3g's are not new - been around for years.
 
Aug 28, 2018 at 11:06 AM Post #22,087 of 39,986
I’ve rolled 4 x Chatham 6AS7Gs with a few tubes but I find them fatiguing. Most were warm tubes and darker tubes: RCA 12SX7/RCA 12SN7/KR 12SN7. I don’t find the 6BX7s fatiguing just a little lean. The 6336Bs sound fantastic to me with the Auteurs. What’s your go to tube pairing with the Auteurs Glenn?

You spoiled from the sound the HD650s and E-Mu Teaks produced matched with the GOTL.

I need to take my advice and circle back later. I need to put in time with the current tubes I have. See what’s a good synergy with the Autuers and purchase those tubes or try out other tubes.

Generally, the 6BL7 is a bit warmer than the 6BX7 and might match up better with the Autuers.
 
Aug 28, 2018 at 12:55 PM Post #22,088 of 39,986
I'm really enjoying my HD650s with quad power tubes Chatham 6AS7Gs and a Sylvania 12SN7GT. The headphones sounds wide, punchy, and produces bass! I didn't think the HD650s could sound this great. The E-Mu Teaks almost sound like the Atticus from memory and I can just imagine what the Atticus would sound like from this amp.

I like the Auteurs from the 6336Bs. I find the 6 x 6BX7 works well with other headphones but makes the Auteurs sounds lean. Even with a warm driver tube. Anyone have a combination they enjoy with the Auteurs?

That simplistically is the difference between (2 or 4 x 6as7) and (6 x 6bx7 or 6bl7). The former lusher and airier, the latter leaner, tighter and more dynamic. I prefer the latter. In the long run, you will determine for yourself which you prefer, irrespective of headphones.

6336 and 5998 again are different. These are marvellous tones. Remember the 5998 is the benchmark of premier tone. I'm quite content to run with 6 x 6bx7 without worrying about the others but the more I talk about the 6bx7, the more I drive it to extinction and higher price.
 
Aug 28, 2018 at 2:45 PM Post #22,089 of 39,986
That simplistically is the difference between (2 or 4 x 6as7) and (6 x 6bx7 or 6bl7). The former lusher and airier, the latter leaner, tighter and more dynamic. I prefer the latter. In the long run, you will determine for yourself which you prefer, irrespective of headphones.

6336 and 5998 again are different. These are marvellous tones. Remember the 5998 is the benchmark of premier tone. I'm quite content to run with 6 x 6bx7 without worrying about the others but the more I talk about the 6bx7, the more I drive it to extinction and higher price.

Ah, so 6AS7Gs are lusher and have more air. 6BX7s are leaner, tighter and more dynamic.

Good information concerning the sound of the power tubes. I’ll be trying out 6080s and 7236s once I move. Half the fun of this amp is find out what sounds good to myself.
 
Aug 28, 2018 at 3:15 PM Post #22,090 of 39,986
Ah, so 6AS7Gs are lusher and have more air. 6BX7s are leaner, tighter and more dynamic.

Good information concerning the sound of the power tubes. I’ll be trying out 6080s and 7236s once I move. Half the fun of this amp is find out what sounds good to myself.

And if your amp uses tube rectifiers, it is possible to add a bit of lushness and/or air to the 6BX7 presentation. :)
 
Aug 28, 2018 at 4:37 PM Post #22,091 of 39,986
I’ve rolled 4 x Chatham 6AS7Gs with a few tubes but I find them fatiguing. Most were warm tubes and darker tubes: RCA 12SX7/RCA 12SN7/KR 12SN7. I don’t find the 6BX7s fatiguing just a little lean. The 6336Bs sound fantastic to me with the Auteurs. What’s your go to tube pairing with the Auteurs Glenn?

You spoiled from the sound the HD650s and E-Mu Teaks produced matched with the GOTL.

I need to take my advice and circle back later. I need to put in time with the current tubes I have. See what’s a good synergy with the Autuers and purchase those tubes or try out other tubes.

With the HD50 and HD800s I used el cheapo Russian 6H13 have been using 6336 with the Autuers I think they need more drive for some reason.
My amp is a little different it only uses two #27 drivers.
 
Aug 28, 2018 at 7:15 PM Post #22,092 of 39,986
Yesterday Juri of Germany contacted me. Said he read 170 pages of the Euforia thread, much of it from me - his words. Also said he followed my audio journey here. He wanted a headphone amp to drive his LCD-3 optimally. Showed me a picture of his main stereo system with Lampizator Golden Gate dac, Air Tight ATE 2001 Pre, etc. Quality stuff.

I said the Glenn OTL amp will drive the LCD-3 optimally. It drove my LCD-2f optimally. Then he ask me which Glenn OTL model. I said to tell Glenn this.


I think he has ordered a GOTL. Juri feel free to come on here and talk. You will find a lot more like minded people here.
 
Aug 28, 2018 at 7:25 PM Post #22,093 of 39,986
And if your amp uses tube rectifiers, it is possible to add a bit of lushness and/or air to the 6BX7 presentation. :)

Use which one?

This?(BTW, I bet the seller is UT. :))
https://www.ebay.com/itm/Tube-GZ34-Vintage-Mullard-Holland-Rare-Metal-base-Strong-Testing-/142912164584?hash=item21463a92e8:g:-zYAAOSw0INbe9Bk&nma=true&si=IRUVMrpPU1TezU9tHw1SwmYvKq8%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

Or this?

https://www.ebay.com/itm/2-Good-GE-...vip=true&rt=nc&_trksid=p2047675.m43663.l44720

Have anyone tried the 1641/RK-60? Glenn used to give it away. :)
 
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Aug 28, 2018 at 8:42 PM Post #22,094 of 39,986

Yes, Holland-made Philips rectifiers, like the metal-based GZ34, or if you want to live on the wild side, the 4-volt 1817, will add a bit of lushness to the sound. For air, it is hard to beat GEC / Marconi-Osram rectifiers, although for considerably less money, there are two European-made 5R4GY that are really very nice. My favorite of the two is the Brimar, but the French-made La Radiotechnique / Dario is a close second.

I don't have the 1641. Maybe someday.... But I already have too many tubes and not enough time.... lol :)
 

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