• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Elekit TU-8850 vs TU-8200R

It seems the TU-8850 is big brother of TU-8200R but i can't see any significant difference if i enjoy a standard version with speaker and KT88/ 6L6GC.
Does anyone try to compare both in same conditions (i.e. by using same tubes with out modification)?Could you please share comments for my consideration?
Thanks a lot