Need to know about a MOS. FET output stage ( the Baby 300B) power amp plans

gaetan8888 · 18th April 2007, 04:17 PM

Hello

I would like to build this MOS. FET output stage ( it's named the Baby 300B) power amp from this web page ?

http://www.geocities.com/Tokyo/5913/ (click on the "MOS. FET output stage" )

Anyone did build it and test it for specs and on a spectrum analyser to see if it's odd or pair order distortion ?

What would you say any about it schematic ?

How good does it sound compared to a good tube amp ?

Can I use a high end OPA627 or OPA637 op-amp do boost the input sensitivity ?

Thank you

Gaetan, Canada

tomahauk · 18th April 2007, 05:35 PM

this output stage have vlotage gain less than 1, if u want to have the amplitude +-30 on output, u must use preamp with +- 30V on output

like this http://www.geocities.com/Tokyo/5913/hybrid.html

18th April 2007, 04:17 PM	#1
gaetan8888 diyAudio Member Join Date: Apr 2007	Need to know about a MOS. FET output stage ( the Baby 300B) power amp plans Hello I would like to build this MOS. FET output stage ( it's named the Baby 300B) power amp from this web page ? http://www.geocities.com/Tokyo/5913/ (click on the "MOS. FET output stage" ) Anyone did build it and test it for specs and on a spectrum analyser to see if it's odd or pair order distortion ? What would you say any about it schematic ? How good does it sound compared to a good tube amp ? Can I use a high end OPA627 or OPA637 op-amp do boost the input sensitivity ? Thank you Gaetan, Canada

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18th April 2007, 05:35 PM	#2
tomahauk diyAudio Member Join Date: Dec 2005 Location: Ruda Œl¹ska // Poland	this output stage have vlotage gain less than 1, if u want to have the amplitude +-30 on output, u must use preamp with +- 30V on output like this http://www.geocities.com/Tokyo/5913/hybrid.html

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