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Darkvoice 337 - A Review - Page 20

post #286 of 869
12/21/07 at 6:15pm
I tried some Tung-Sol 7236's in the Darkvoice 337 in place of the 6AS7's. They sounded VERY good. I admit I am addicted to the 6AS7's lushness, and the 7236 are a little crisper sounding, but they are smoother than the 6080's are. They are somewhere in between the 6080 and the 6AS7.

So from my listening, I would say here is the sonic spectrum of output tubes:

LUSH --- 6AS7 --- 5998 --- 7236 --- 6080 --- CRISP
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post #287 of 869
12/21/07 at 9:50pm
Thread Starter 
Quote:
LUSH --- 6AS7 --- 5998 --- 7236 --- 6080 --- CRISP
Nice spectrum. Have you tried the 6528s yet? I'm curious where they fit in your lineup there.

I'll check the resistor values tonight and see if the EF80 is plug 'n play. If so I'll order a bunch and start on those adapters soon.
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post #288 of 869
12/22/07 at 12:07am
Quote:
Originally Posted by Mazuki View Post
Nice spectrum. Have you tried the 6528s yet? I'm curious where they fit in your lineup there.

I'll check the resistor values tonight and see if the EF80 is plug 'n play. If so I'll order a bunch and start on those adapters soon.
I have not been able to score a pair of 6528s yet I am going to keep trying though.

And do let us know if the stock 337 can use the EF80 (with the adapters of course). The EF86 actually made more intuitive sense, since its also a sharp-cutoff pentode like the 6SJ7, but it would be great if the EF80 will work in a stock 337.
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post #289 of 869
12/22/07 at 1:21am
Has anyone tried this amp with grado's, if so what are your thoughts?

I'm also thinking that this may be a fabulous amp for the Sony sa5000 owners, and I'm curious if anyone has tried the combo.

Beautifull amp, makes me want to buy it.
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post #290 of 869
12/22/07 at 6:22am
Thread Starter 
So I compared the resistor values, and it looks like everything is exactly the same. Kind of weird actually.

Anyways, here are the two threads I used to make this conclusion. It would be great if someone else can take a look to confirm my finding.

Regular 337

337 SE

The pictures are a bit blurry and the resistors they use are coded in a weird way. I'm going to go ahead and order some EF80 tubes though.
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post #291 of 869
12/22/07 at 8:16am
Quote:
Originally Posted by Mazuki View Post
So I compared the resistor values, and it looks like everything is exactly the same. Kind of weird actually.

Anyways, here are the two threads I used to make this conclusion. It would be great if someone else can take a look to confirm my finding.

Regular 337

337 SE

The pictures are a bit blurry and the resistors they use are coded in a weird way. I'm going to go ahead and order some EF80 tubes though.
from my limited mandarin knowledge

the change the tubes plus change all the wires to gold plated one?

someone the SE is made to order
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post #292 of 869
12/22/07 at 3:24pm
Thread Starter 
Yes, both tubes have been changed (though the 6080 is a equivalent to original 6N5P) and all wiring has been gold plated. Thing is if they changed driver tubes, it's also possible resistors were changed as well. That wouldn't be something they would mention, IMO.
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post #293 of 869
12/22/07 at 3:41pm
Does the 337 use it's drive tubes as normal pentodes (all 5 electrodes wired) or as triodes (only 3 terminals wired) ? What I'm getting at is: can it be easily modified to (also) use triodes on input ?
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post #294 of 869
12/22/07 at 6:44pm
Thread Starter 
Quote:
Does the 337 use it's drive tubes as normal pentodes (all 5 electrodes wired) or as triodes (only 3 terminals wired) ? What I'm getting at is: can it be easily modified to (also) use triodes on input ?
You make a really good point, but it looks like the suppressor grid (pin 6) is connected to the plate (pin 8) via a 1.1kohm resistor, not a direct connection (triode mode).
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post #295 of 869
12/24/07 at 8:58pm
All I want for Christmas is my DV 337 to arrive!
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post #296 of 869
12/25/07 at 4:16am
Thread Starter 
Quote:
All I want for Christmas is my DV 337 to arrive!
How long ago did you order it?
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post #297 of 869
12/25/07 at 4:29am
Thread Starter 
So recently a set of questions were asked on the Darkvoice forum. I thought I'd translate and share with everyone:

1. What sonic differences are there between the 337SE and the 337?

The 337SE improves in soundstage, detail and resolution. They also say human voices gain more "magnetism". Not sure what that means...

2. What are the component differences of the 337SE?

Resistors have been changed to Vishay BC, capacitors changed to Vishay Roederstein, wiring changed to gold plated wires, output tubes now EF80 and 6080.

3. Can I keep the all black look of the original 337, I think the new gold look is ugly.

The 337SE is still all black, just with a golden faceplate.

4. How long does it take to build a 337SE?

It takes more than 20 days. Burning in the tubes takes some time.

5. Are you making 337SEs right now?

The first one has already shipped, we have 4 more orders but since we're a little busy right now, haven't gotten to them yet.

6. Will there be future improvements to the 337SE? What will happen in the future if I order one now?

We only have parts for a little more than 10 amps right now. We haven't thought about future modifications.

---------------------------------------------------------------------

I think that gave some insight into the 337 product line. The 337SE is mostly a custom order amp and it's obvious they don't push too many of them.
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post #298 of 869
12/25/07 at 1:34pm
Quote:
Originally Posted by Mazuki View Post
How long ago did you order it?
I ordered & paid for it Dec 5th and it shipped Dec 15. It could be held up in customs.
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post #299 of 869
12/26/07 at 11:41am
That's very interesting about the 337SE. I would have ordered that if I didn't already have a 337, but I don't plan to "upgrade".
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post #300 of 869
12/26/07 at 12:49pm
anyone tried the svetlana tubes on ebay? seems like there's plenty on them for sale. would like some feedback if anyone has tried them. Thanks
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