Alex, I believe what Jean-Claude is referring to is the fact that on the old amp the volume control "opened up" very quickly and maybe a setting about 1/4th up was plenty. On the newer amps the control(which is a variable resistor)lets in voltage much more gradually and a much higher setting is needed for the same output. The maximum output is said to be essentially the same, but a higher setting is used for a given volume level. Hopefully this is the reason for the problem that you're experiencing.
