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post #26491 of 31102

hmm. impressions from GEC 6AS7 and Beyer T1. I need different driver tubes. as of now, the GEC is definitely better tonally and more detailed than 5998. but is lighter on the bass and also brighter in the treble.

 

with Sylvania 7308, not very good, with Bugle Boys, most detail, wide and airy, but improvements also made midrange weird and treble bright at times, was too bass light, maybe only good with good recordings, the T1s sounded really fast with this combination.  with Amperex A-frame 6922, also bass light and weird midrange/treble. and now, with reflector 6n23p, the bass kinda came back and treble wasn't bad, mids came out, but this tube isn't as good as the amperex, so transparency and soundstage aren't as good.

 

conclusion, Amperex A frame 6922 and 5998 are best with T1. i should upgrade to WA22 or get different drivers (maybe mullard cv2492?). i need to find a combo that works with T1/GEC 6AS7G, its hard to go back to the 5998 since it has less detail than the GEC.

 

 

now....the HD 800 and GEC 6AS7G/Bugle boys was outstanding. a little bright at times still, but the details and soundstage and everything was soooo good.

post #26492 of 31102

tongue.gif I'm only curious with other people's money.

post #26493 of 31102
Quote:
Originally Posted by atomicbob View Post

So how does one go about acquiring GEC  A1834 / 6AS7g brown base tubes? I see the ones that are always offered on ebay for $250 to $500 per tube. I would like to hear one in my WA3+.

 look out for a used example, they is a big jump between NOS boxed and a lightly used A1834 / 6AS7g, so think £40 to £60. Tube is long life one so plenty of excellent milege in it for you especially as you only need one. You will need to be patient hopwever. The source DG and I bought at have a very pair up for sale atm by £275 ($415) plus shipping which is too high I feel.

post #26494 of 31102
Ouch 415$, one of my pairs looks exactly like those. I did end up buying an extra curved base to complete my pair, 239$ + shipping, but curved is rarer.

So i will have nos curved and nos straight pair, and a used straight pair
post #26495 of 31102

wow GEC 6AS7G sounds great with T1, but the tubes need to really warm up or they sound bright. gotta leave them on for a while. and my WA2 is hot as **** right now.

post #26496 of 31102
Quote:
Originally Posted by Dubstep Girl View Post

wow GEC 6AS7G sounds great with T1, but the tubes need to really warm up or they sound bright. gotta leave them on for a while. and my WA2 is hot as **** right now.

sweet

post #26497 of 31102

im starting to like the HD 800 more too, it sounds incredibly good with the WA2 now.

post #26498 of 31102
Quote:
Originally Posted by Dubstep Girl View Post

hmm. impressions from GEC 6AS7 and Beyer T1. I need different driver tubes. as of now, the GEC is definitely better tonally and more detailed than 5998. but is lighter on the bass and also brighter in the treble.

 

with Sylvania 7308, not very good, with Bugle Boys, most detail, wide and airy, but improvements also made midrange weird and treble bright at times, was too bass light, maybe only good with good recordings, the T1s sounded really fast with this combination.  with Amperex A-frame 6922, also bass light and weird midrange/treble. and now, with reflector 6n23p, the bass kinda came back and treble wasn't bad, mids came out, but this tube isn't as good as the amperex, so transparency and soundstage aren't as good.

 

conclusion, Amperex A frame 6922 and 5998 are best with T1. i should upgrade to WA22 or get different drivers (maybe mullard cv2492?). i need to find a combo that works with T1/GEC 6AS7G, its hard to go back to the 5998 since it has less detail than the GEC.

 

 

now....the HD 800 and GEC 6AS7G/Bugle boys was outstanding. a little bright at times still, but the details and soundstage and everything was soooo good.

Do you use bugle boys with your 5998's? 

post #26499 of 31102
Some may cry foul, but maybe try listening to RCA 6CG7 cleartops with the GEC to see if you like the signature. I think it might tame the top end and fill in the bottom while keeping air and detail. It's at least worth a listen.
Quote:
Originally Posted by Dubstep Girl View Post

hmm. impressions from GEC 6AS7 and Beyer T1. I need different driver tubes. as of now, the GEC is definitely better tonally and more detailed than 5998. but is lighter on the bass and also brighter in the treble.

with Sylvania 7308, not very good, with Bugle Boys, most detail, wide and airy, but improvements also made midrange weird and treble bright at times, was too bass light, maybe only good with good recordings, the T1s sounded really fast with this combination.  
with Amperex A-frame 6922, also bass light and weird midrange/treble. and now, with reflector 6n23p, the bass kinda came back and treble wasn't bad, mids came out, but this tube isn't as good as the amperex, so transparency and soundstage aren't as good.


conclusion, Amperex A frame 6922 and 5998 are best with T1. i should upgrade to WA22 or get different drivers (maybe mullard cv2492?). i need to find a combo that works with T1/GEC 6AS7G, its hard to go back to the 5998 since it has less detail than the GEC.


now....the HD 800 and GEC 6AS7G/Bugle boys was outstanding. a little bright at times still, but the details and soundstage and everything was soooo good.
post #26500 of 31102
Quote:
Originally Posted by GrindingThud View Post

Some may cry foul, but maybe try listening to RCA 6CG7 cleartops with the GEC to see if you like the signature. I think it might tame the top end and fill in the bottom while keeping air and detail. It's at least worth a listen.

 

are they compatible.

 

and yeah with 5998, i use bugle boys for hd 800, and 6922 orange a-frames for my T1.

 

also seems like the treble isn't as bright after a few hours. right now my WA2's been on for a while and the amp is pretty hot, and its not as bright, it sounds smoother. so also i've noticed GEC take quite a while to warm up. its not like the other tubes where they sound ok when u just turn them on.


Edited by Dubstep Girl - 7/13/13 at 7:52am
post #26501 of 31102
Heater current is higher (like 6N1P-EV), and gain is lower (~17). It will be a little under biased (at least it is in the WA3). I've read where some have even used the 6GU7 in WA2 and somewhat liked it. http://www.head-fi.org/t/411676/6922-substitutes-for-the-wa2-part-2. For those after solid state like sound, either would be a step in the wrong direction. I like the 6CG7 in my WA3 and have actually gone further and I'm using 6SN7 (via adapter) as my normal listening tubes. I was after space and detail and this seemed to do it for me.. The 6GU7 was too far out of the operating zone and sounded too dark IMHO. My WA3 still has the factory circuit in the driver stage.
Quote:
Originally Posted by Dubstep Girl View Post

are they compatible.

and yeah with 5998, i use bugle boys for hd 800, and 6922 orange a-frames for my T1.

also seems like the treble isn't as bright after a few hours. right now my WA2's been on for a while and the amp is pretty hot, and its not as bright, it sounds smoother. so also i've noticed GEC take quite a while to warm up. its not like the other tubes where they sound ok when u just turn them on.

Edited by GrindingThud - 7/13/13 at 8:19am
post #26502 of 31102

Thanks for the advice GrindingThud and Nic Rhodes. Wanting to hear what difference the A1834 makes over TungSol 5998 in WA3+ for HD800. Biggest difference I experienced was changing the source from the Sonos internal DAC to a Violectric V800. What an improvement in clarity and definition that made. Current setup is quite sonically satisfying but it would be nice to have the GEC in the collection.

post #26503 of 31102

night and day from 5998. really opens the hd 800s up. 5998 still has better bass though, it has more bass and its a little slower in decay. the gec seems to have good synergy with hd 800 though, the hd 800s still have alot of bass with the tube and the airy nature of the tube works well with hd 800 in bring out the soundstage and details.

post #26504 of 31102

Very exciting to wake up to your new adventure and discovery!

post #26505 of 31102
Quote:
Originally Posted by Dubstep Girl View Post

night and day from 5998. really opens the hd 800s up. 5998 still has better bass though, it has more bass and its a little slower in decay. the gec seems to have good synergy with hd 800 though, the hd 800s still have alot of bass with the tube and the airy nature of the tube works well with hd 800 in bring out the soundstage and details.


DG, you want to look over this link for 6dj8 type sonic characteristics, I find it to be of great aid in my tube selection process in tuning my system:

 

http://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html#6DJ8

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