SONY TA F808ES


Hello there,

I have a Sony Ta 808es amp which my dad gave to me, I recently checked transistors of amp which located at the bottom. There are 8 main transistors, 4 of the are SONY brand (with S logo), the other 4 are Toshiba brand ( with T logo). Amp plays perfectly good, no buzzing or any distortion or any defects in sound. Should I really concern about the transistors, do they really effect any how. Cause one of my friend just insists it effects, and that bothers me..

Thank You
Niko
128x128nikodavidoff
Thank you very much ! Then I really don't care what they say actually.. I set up the system looks fine, thank you again guys
Cheers
Niko
Post removed 
@nikodavidoff

TA-F808ES uses both S & T type mosfets, so i believe the unit is still in factory state. Do not change unless you have the confirmation that amp was serviced and mosfets were changed. If in doubt check following site:  https://audio-heritage.jp/SONY-ESPRIT/amp/ta-f555esj.html
In Japan it was sold under F555ES name.