Shop sell many tube amp PP SE kt88PP 45SE 300B 4p1l PPP 811SE
Shop owner insist 811a se >20 watts
Shop owner insist 811a se >20 watts
If kt88 PP, SE i just walk and buy at shop no need to DIY 811a that make me suffer to gather infomation that too difficult to my capability
Many shop in china clone Kt88 inexpensive. There are plenty of KT88 pp or SE sell in many E-commerce and used market. What i listen to KT88 PP, i did not like. Load of bass not my style
The translation says "more charm than a 300B". You cannot quantify the sound by "charm".
Personally I can only deal with measurements, it is my limitation. I cannot judge how an amplifier sounds to a particular person. Also, youtube sound is not a reference, to say the least.
Personally I can only deal with measurements, it is my limitation. I cannot judge how an amplifier sounds to a particular person. Also, youtube sound is not a reference, to say the least.
KT 88 pp style is sound like my DC SERVO 115 watt Buz 901 906. Load of bass. Not polite as 45SE.
Yes, a push-pull KT88 will give you plenty of bass if you use decent output transformer. You probably want a single ended amplifier, plenty of those also in Aliexpress.
I have never tried a kit from Aliexpress, therefore cannot comment on how they sound. I'd recommend to forget about the 811A, and go for something simpler to drive like a KT88 or an EL34, triode-strapped.
I like polite amp, moderate bass, more neutral. Another choice may be back to 4p1l in 3 PSE tube but only 8 watts
KT88 SE 12 watts might be ok but not PP for sure.
my friend us EL34 PP i dislike it so much load of bass again.
I am quite old guy 50s want something polite sound
my friend us EL34 PP i dislike it so much load of bass again.
I am quite old guy 50s want something polite sound
This chinese guy make 811 833 and many
He still not mention to avoid 811
In contrary he support more info
811阴极电流等于屏流和栅流之和，栅流越大，输出的屏流就越小，栅流越小，输出的屏流就越大。把811栅极的正偏置设在参数的中间，并严格控制工作时进入负栅区，这样的输出波形比栅极忽左忽右时的输出波形要好得多。不过说实话，此时的波形也是不对称的，尽管管子工作在正栅区，栅流也会随着输入信号正负半周的变化而造成输出屏流的变化—负半周时削顶小，正半周时削顶大，只不过此时比栅压忽左忽右时要好而已。这就是所说的左派功放管做单端功放绕不过的坎。
He still not mention to avoid 811
In contrary he support more info
811阴极电流等于屏流和栅流之和，栅流越大，输出的屏流就越小，栅流越小，输出的屏流就越大。把811栅极的正偏置设在参数的中间，并严格控制工作时进入负栅区，这样的输出波形比栅极忽左忽右时的输出波形要好得多。不过说实话，此时的波形也是不对称的，尽管管子工作在正栅区，栅流也会随着输入信号正负半周的变化而造成输出屏流的变化—负半周时削顶小，正半周时削顶大，只不过此时比栅压忽左忽右时要好而已。这就是所说的左派功放管做单端功放绕不过的坎。
I'd recommend translating text in Chinese, the forum formal language is English.
About the 811A. I have my opinion, based on what I see and the curves. I have never used one, therefore you can take what I say with a grain (or a tablespoon) of salt 😀
About the 811A. I have my opinion, based on what I see and the curves. I have never used one, therefore you can take what I say with a grain (or a tablespoon) of salt 😀
I have not done anything with KT88s, can't really recommend based on personal experience, but I will have a look, there are definitely plenty of those around the net.
Tubelab SSE, of course, I forgot about it. Very well documented and supported, right here in this site. It is quite universal, you can use different output tubes depending on budget, power requirements etc.
http://tubelab.com/designs/tubelab-sse/
http://tubelab.com/pc-boards/ordering-legacy/
http://tubelab.com/designs/tubelab-sse/
http://tubelab.com/pc-boards/ordering-legacy/