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Old 14th July 2003, 01:05 AM   #1
millwood is offline millwood  United States
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This is a Japanese site that has a lot of tube and MOSFET class A amps. they look interesting on paper but unfortunately I cant read Japanese so not sure how good they are - the thing I liked is that a lot of the amps have osciloscope shots so you know for sure how good they are - something that I think is dearly missed in the audio business as not many of the manufacturers and fanatics are brave enough to show how their amps would perform.

Here is the link.


I am particularly interested in how the D-NFB thing works.
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Old 14th July 2003, 03:19 AM   #2
moe29 is offline moe29  United States
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this one looks really cool

some wonderful work on that site.
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Old 14th July 2003, 03:37 AM   #3
djk is offline djk
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I got a kick out of the one built in the plastic Tupperware container!

They all have NFB, just not around the output stage.

With such low bias the distortion will take off above the class A region. The highest bias I saw was for 1.25W at 4 ohms, 2.5W at 8 ohms.
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Old 14th July 2003, 06:19 AM   #4
peranders is offline peranders  Sweden
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millwood, have you tried this:

Shortcut for those who don't learn japanese so fast
/Per-Anders (my first name) or P-A as my friends call me
Group buy: DCT03 DC trap for big toroidal transformers. Sign up for interest HERE. 55 pcb's in order. 49 paid.
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