Project Sunrise/PS2 Tube Rolling Thread (and maybe even Project Horizon and Project Ember)
post-9530693
Post #181 of 410

chinook9

100+ Head-Fier
Joined
Dec 15, 2010
Messages
339
Reaction score
19
Joined
Dec 15, 2010
Posts
339
Likes
19
Quote:
another nice tube is the dutch amperex pq ecc88 with a-frame, dimpled-disc getter ... but alas, mine is gone now.  i'm trying to resist grabbing a 7308 ... got to save my ducats for new phones ...
 
I was taking a look at the tube you describe but most, if not all, were in China.  Have you ever had success buying tubes from China?  I always figured there was too much chance they were fakes.
 
     Share This Post       
post-9533241
Post #182 of 410

geetarman49

500+ Head-Fier
Joined
Apr 7, 2009
Messages
775
Reaction score
64
Joined
Apr 7, 2009
Posts
775
Likes
64
yes, i noticed that too ... & like you, i'm very leery about tubes & source.  i've never purchased any tubes from china ... amps & dacs, yes but not tubes.  however, from the pix i don't see any obvious indications that these are anything less than authentic (well, there's always a possibility of a re-label).  my guess is that many of these are pulls from scrapped lab gear.
 
 
     Share This Post       
post-9549096
Post #183 of 410

chinook9

100+ Head-Fier
Joined
Dec 15, 2010
Messages
339
Reaction score
19
Joined
Dec 15, 2010
Posts
339
Likes
19
geetarman49
 
Thought I would go ahead and try the dutch amperex pq ecc88 with a-frame, dimpled-disc getter.  Last night I got two hp branded made in Heerland.  Tubes not marked PQ but guys I play golf with were engineers for HP back in the day and they said HP had very high standards for their tubes so I expect these are the same.  It also appears that they fit the description given by Joe (of Joe's Lore) for the RCA tube of the same description.  These things have the sweetest highs I have heard and the bass is really there.  I asked myself a number of times if the highs weren't a little too high but I don't think so.
 
I have a couple of Orange Globe versions headed my way and should be here on Monday.  They are not a-Frame but do have the dimpled getter. 
 
     Share This Post       
post-9551379
Post #184 of 410

geetarman49

500+ Head-Fier
Joined
Apr 7, 2009
Messages
775
Reaction score
64
Joined
Apr 7, 2009
Posts
775
Likes
64
say, good hunting ...
 
i'm glad you like them ... a very, very nice tube imo.  both hp & tektronix labelled tubes are amongst the best quality tubes & barring the presence of microphonics, the orange globes should be very good as well.
 
can you post a pix of the getter arrangement on the orange globes when you receive them?
 
     Share This Post       
post-9551826
Post #185 of 410

chinook9

100+ Head-Fier
Joined
Dec 15, 2010
Messages
339
Reaction score
19
Joined
Dec 15, 2010
Posts
339
Likes
19
Quote:
say, good hunting ...
 
i'm glad you like them ... a very, very nice tube imo.  both hp & tektronix labelled tubes are amongst the best quality tubes & barring the presence of microphonics, the orange globes should be very good as well.
 
can you post a pix of the getter arrangement on the orange globes when you receive them?

I actually received the orange globes yesterday afternoon.  I'll post a picture of the getter...probably later today.
 
I have done some listening, but it gets rather confusing.  I now have three Amperex types of 6 volt tubes.  They are very similar and on a couple of occasions a tube has sounded somewhat different the second time I listen to it. A change in volume can make a lot of difference especially in the soundstage.  We'll see. 
 
     Share This Post       
post-9552597
Post #186 of 410

chinook9

100+ Head-Fier
Joined
Dec 15, 2010
Messages
339
Reaction score
19
Joined
Dec 15, 2010
Posts
339
Likes
19
geetarman49, here are the images......I hope
 

 

 

 

 
     Share This Post       
post-9554329
Post #187 of 410

geetarman49

500+ Head-Fier
Joined
Apr 7, 2009
Messages
775
Reaction score
64
Joined
Apr 7, 2009
Posts
775
Likes
64
hard to see in the pix, but the dimpled disc is supported by a single post?
 
i wouldn't mind getting one of these myself; i've read that the OG are fuller sounding and not as 'sweet' as the BB but i've never had a chance to test them side by side.
 
btw, thnx for the pix.
 
 
     Share This Post       
post-9555071
Post #188 of 410

chinook9

100+ Head-Fier
Joined
Dec 15, 2010
Messages
339
Reaction score
19
Joined
Dec 15, 2010
Posts
339
Likes
19
Quote:
hard to see in the pix, but the dimpled disc is supported by a single post?
 
i wouldn't mind getting one of these myself; i've read that the OG are fuller sounding and not as 'sweet' as the BB but i've never had a chance to test them side by side.
 
btw, thnx for the pix.
 

I sent you a PM.
 
     Share This Post       
post-9555104
Post #189 of 410

chinook9

100+ Head-Fier
Joined
Dec 15, 2010
Messages
339
Reaction score
19
Joined
Dec 15, 2010
Posts
339
Likes
19
Quote:
hard to see in the pix, but the dimpled disc is supported by a single post?
 
i wouldn't mind getting one of these myself; i've read that the OG are fuller sounding and not as 'sweet' as the BB but i've never had a chance to test them side by side.
 
btw, thnx for the pix.
 
 
Forgot...yes it is supported by a single post.
 
     Share This Post       
post-9586817
Post #190 of 410

cheaphifi

100+ Head-Fier
Joined
Jan 5, 2010
Messages
254
Reaction score
15
Joined
Jan 5, 2010
Posts
254
Likes
15
You should try a 12AU7 ECC802 RAYTHEON BALDWIN with Long Black-plates, it's a great tube :)
 
 

 
     Share This Post       
post-9588966
Post #191 of 410

daerron

500+ Head-Fier
Joined
Oct 2, 2011
Messages
873
Reaction score
100
Joined
Oct 2, 2011
Posts
873
Likes
100
I'm now on my Amperex 12AT7 tube (West Germany, so probably a Siemens valve) most of the time. Since I got a better DAC the improvement in clarity with this tube is much more obvious, especially on vocals. Have noticed background vocals in songs I didn't realise were there before. On the downside the tube can be a little bright at times, but hopefully it will settle down a bit with burn in. The National 6922 is now my second favourite tube after the Amperex.
 
     Share This Post       
post-9593456
Post #192 of 410

Garage1217

Member of the Trade: Garage1217
Joined
Nov 7, 2010
Messages
147
Reaction score
17
Joined
Nov 7, 2010
Posts
147
Likes
17
No secret I am a fan of the 12bh7 / 12bh7a, but I recently have been toying with their less common brother, the 6gu7 which is basically a 6v version. Outstanding tall bottle tube (tall for a mini 9 pin at about 1/2" taller than say a 12au7) and can be had for a couple of bucks per tube. To note, RCA Makes a clear top version.
 
     Share This Post       
post-9596305
Post #193 of 410

beyondthepale35

100+ Head-Fier
Joined
Sep 18, 2009
Messages
205
Reaction score
13
Joined
Sep 18, 2009
Posts
205
Likes
13
Well I just bought a Sylvania 12av7 to try out with my Ember, Ill see how it sounds come Thursday. Everythings getting more expensive :frowning2:
 
     Share This Post       
post-9596425
Post #194 of 410

Garage1217

Member of the Trade: Garage1217
Joined
Nov 7, 2010
Messages
147
Reaction score
17
Joined
Nov 7, 2010
Posts
147
Likes
17
I like 12av7’s in general. Funny as I have a Raytheon I am listening to in a starlight right at this very moment . I do find them noticeably more susceptible to noise than other tubes in certain situations. And yes, prices on all vintage tubes have been on a rapid rise over the last 6-8 months I have noticed. $4-6 tubes are generally now $10-$12. Still a ton of good deals to be had.
 
     Share This Post       
post-9596517
Post #195 of 410

beyondthepale35

100+ Head-Fier
Joined
Sep 18, 2009
Messages
205
Reaction score
13
Joined
Sep 18, 2009
Posts
205
Likes
13
Yeah, got a NOS one for 10 shipped so not too bad an investment. Think Ill pick up an RCA clear top next then go from there. Glad the Ember has auto biasing for my tube rolling noobness.
 
     Share This Post       

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top