[jamato8]

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Where do you find the black gate caps? Is there a place that anyone would recommend or do you have to have connections with someone? Or is there an alternative to the backgate caps?

Not everyone like BG's. I find they take quite a while to form, otherwise they don't sound their best. They are getting very hard to find since none have been produced for a few years now. There are other good caps but I don't think any that have been produced to fill the same place as the BG's. I don't think the market is strong enough, just too niche. 

 

[SpudHarris]

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Yes the round plates are nice. I have a few sets of them in NOS. One is in beautiful boxes that are in perfect condition, think and deeply embossed in blue ink on a light tan thick paper box. I have the Sylvanias as well in the 1952 version and many others. 
 
What I didn't get with the Woo 6 was the power I always wanted. With easier to drive phones it is exceptional though and my Woo 6 was maxxed to the hilt with about 9 hundred dollars of additional parts. 
 
My fi.Q with the tantalum resistors and changes I have made, sounds very 3D and has a textured bass that is very realistic, when everything is right (good recording and the phones doing what they should). 

I can give those 1952 Bad Boys a good home if you don't need them anymore hehe. I've got a couple of pairs of round plates and a pair of 6F8G round plates but alas still searching for the Bad Boys, boo hoo.........
 

 

[qusp]

is there a tube driver stage option for the FiQ now?.......

 

[SpudHarris]

I wish...........Sorry Jeremy, my fault.
 
Back to the Fi-Quest!

 

[jamato8]

Yes, I just jammed them onto the top of my fi.Q. Wow the difference!! :^)  I have about 14 in nice green Sylvania boxes of the 1952 that I found in a . . . . . junk yard. Yahoo. . . 5 bucks each. . . 
 
Anyway, I put a OPA627 into the ground channel of the fi.Q and prefer that to the buf634. This is with the HD650. Good extension and a dynamic sound. More as I listen and see if there are any irritating qualities. 
. 

 

[qusp]

Quote:

I wish...........Sorry Jeremy, my fault.
 
Back to the Fi-Quest!

haha was just a friendly nudge, nothing to be sorry about. we';ve had a tradition of discussing fairly wide ranging audio related stuff in here on occasion, far be it from me to stand in the way of that.

 

[jamato8]

627's didn't work in the ground channel. I started to get a lot of DC offset for some reason. Back to 3 channel and sounding good with 4 buffers per channel in wide bandwidth and using some OPA637's. The OPA637BP or the 2111 metal can both sound very good. 
 
Edit: The 4 channel works fine now. I must have had something wrong. I am using the 627AP in the ground channel. Great sounds. 

 

[SpudHarris]

Quote:

627's didn't work in the ground channel. I started to get a lot of DC offset for some reason. Back to 3 channel and sounding good with 4 buffers per channel in wide bandwidth and using some OPA637's. The OPA637BP or the 2111 metal can both sound very good. 
 
Edit: The 4 channel works fine now. I must have had something wrong. I am using the 627AP in the ground channel. Great sounds. 

Must give tha OPA627 a go in ground with my OPA637AM's. This was the combination I had in my PPAv2 for ages, oh sweet memories of my inocence. I thought I was completely off my trolly spending £200 on that PPA back then

 

[jamato8]

Yes, the 627 in ground does it. Very open and dynamic. 

 

[ryuzoh]

Quote:

Yes, I am using the metal can 2111 in mine with all the maxxed items in tow. It just lets the music flow. 

I measured OPA2111AM burning-in gradation with THD+N....
Initially it had 0.0263%, and got 0.0102% in next 6hours, and achieved 0.0058% after 50 hours (1kHz sine wave, 1Vp-p, 100Ohm load with VA-2230A).
Also OPA637SM required longer term to be burnt-in than PDIPs.

S/N 027 as BG sound stage ver.2 with OPA2111AM
 
Well, I'm testing ADA4637-1ARZs now and still burning-in.
Generally resembling sound with 4627s but slightly detailed.
And 4637BRZs will come soon and looking forward....
Quote:

I guess the pre orders are over.

Not yet.

 

[jamato8]

Ryuzoh, what are the large caps you are using in the fi.Q in the picture? 

 

[SpudHarris]

and.......... where can I get one (at least) of those sexy cases to store my opamps. Very cool !

 

[ryuzoh]

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Quote:

Originally Posted by jamato8 /img/forum/go_quote.gif
Ryuzoh, what are the large caps you are using in the fi.Q in the picture? 

C1/C2 as STD4700/16V, C3/C4 as N33/16V, CP1/CP2 as STD47/16V, C5/C6 as FK100/16V(25V in same package), CP3/CP4 as N33/16V.
This is all BG, so that I had much labour to adjust sounds from this configuration.
 
​

[/size]

Quote:

and.......... where can I get one (at least) of those sexy cases to store my opamps. Very cool !

This is anti static IC case and I can get here around in Japan, takes $5, so useful to store.


If you want, advise me when you request something update for your fi.Q, Nigel.
I'll add it.

 

[jamato8]

I would like 4 of those cases for the op amps. :^)
 
I know the other caps, I was wondering about the two large. Ok, they are the std BG. 
 
So Ryuzoh, any preference by you on the metal can 2111 or the 637BP? 
 
Ryuzoh, that is a very strange avatar. It scares me, just a little. lol
 
Oh, the multi turn pot and transistor for the charging circuit work great. The 25 turn is 25 times better. 

 

[SpudHarris]

Quote:

I would like 4 of those cases for the op amps. :^)
 
I know the other caps, I was wondering about the two large. Ok, they are the std BG. 
 
So Ryuzoh, any preference by you on the metal can 2111 or the 637BP? 
 
Ryuzoh, that is a very strange avatar. It scares me, just a little. lol
 
Oh, the multi turn pot and transistor for the charging circuit work great. The 25 turn is 25 times better. 

 
I've searched here in the uk and can't find anything like those cases. I will send my Fi-Q for an update and ask Ryuzoh if he can supply a few.
 
And I have to agree reference the Avatar, that nose looks like a pair of ... don't know if I'm to say??? I do love the Edition 8 styling though