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Chinese 300b
Chinese 300b
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Old 25th January 2021, 03:43 PM   #31
wyan is offline wyan  China
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Join Date: Mar 2013
Chinese 300b
Hi, Duke58, I am using 801A. There are other alternative out there. Simply dig into some posts in this forum and you will find out. You need to use input transformer to reach enough amplification though (combined). Cheers.
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Old 25th January 2021, 03:53 PM   #32
jwags818 is offline jwags818  United States
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Join Date: Aug 2005
Location: Wilsonville Oregon, Corvallis Oregon native (You can't lick our beavers!).
Quote:
Originally Posted by 6A3sUMMER View Post
jswags818,

Does your amp have:
No negative feedback, taken from the output transformer?
Negative feedback, taken from the output transformer?

Thanks!
No negative feedback. It hasw a 5400k Ω output transformer and a D3a driver. The deisgn in on Audiodesignguide.com Its the one he calls the reference 300B amplifier. Only difference is I bought tentlabs heater filament boards and I am using soviet milspec capacitors in the PS and Deulend coupling caps.
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Jwags818 - Wilsonville, Oregon
D50s - 300B/D3A SET - 12in Audio Nirvana Speakers
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Old 4th February 2021, 10:19 PM   #33
woxman is offline woxman
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Join Date: May 2011
New SuperTNT 300BQ

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Old 4th February 2021, 10:44 PM   #34
Schmitz77 is offline Schmitz77
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Join Date: Apr 2015
It seems that there are a high number of asians have become wealthy enough to be interested in good music reproduction. Its good, that they have their own products for buying and don't need to buy foreigns.
Nobody that I know buys china made products because of quality- its just the usual low quality product and that can be spotted from the pics itself.
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Old 5th February 2021, 08:21 AM   #35
woxman is offline woxman
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Join Date: May 2011
The Chinese are not fools, they know what is beautiful and what is good. The Chinese do not reject good products from other countries in the world, if you can produce them.

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Old 5th February 2021, 03:23 PM   #36
Schmitz77 is offline Schmitz77
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Join Date: Apr 2015
You beliefe in those measurement diagrams, really?
Oh man, they can fake everything, even measurement protocolls.
When they are on their european tour, chinese buy all those excellent and well made european products. Because they can be sure not to buy fakes and replicas.
Every chinese with money and status buys only original foreign products, if they can afford. They are able to build excellent quality (see Foxconn/Apple), but for that they want a premium price, too. If you have compared this tube with a real WE, engraved base, the result would be interesting.
The engraved one looks excellent. Thanks for sharing!
Attached Images
File Type: jpg 6.jpg (396.9 KB, 28 views)

Last edited by Schmitz77; 5th February 2021 at 03:39 PM.
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Old 5th February 2021, 06:15 PM   #37
woxman is offline woxman
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Join Date: May 2011
You have never used SuperTNT 300B, and you are not qualified to evaluate its quality.

Arrogance does not make life better

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Match Pair SuperTNT 300BQs curve
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Old 5th February 2021, 06:29 PM   #38
Schmitz77 is offline Schmitz77
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Join Date: Apr 2015
I've never made that statement.

Did you measure those tubes? Or is it chinese curves? A measurement with no values, no axis declaration?
You know, measurements are one thing, but what counts in the end is the audible quality.
Did you heard those tubes? Did you compare them with others?
How much is the price for a pair?
Or are you just doing progaganda for those tubes, guerilla marketing way?


Btw, chinese people, when they got wealthy, are the most arrogant of all. They never buy chinese goods, only foreign is good enough for them. Because nobody buys chinese when quality is the focus.
And speaking frankly, if I had to buy 300B, only original WE 300B would do. Nothing else. Maybe the Whitener 300B, but never chinese.

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Old 5th February 2021, 06:49 PM   #39
woxman is offline woxman
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Join Date: May 2011
In a few days, I will give you a test SuperTNT 300BQ video on youtube
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Old 8th February 2021, 04:26 PM   #40
woxman is offline woxman
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Join Date: May 2011
Default Test a match pair of SuperTNT 300BQ's curve

test video on youtube
Test A match pair of SuperTNT 300BQ‘s Curve - YouTube

No.46 original curve image
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No.83 original curve image
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No.46 red curve
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No.83 blue curve
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No.46 and No.83 Match curve
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